When I remove the voltage from the Idle control Valve, while the car is running= the RPM Rises up to over 1600. Valve seat coated with foreign material/ dirt. 7L HONDA CIVIC L. Remove the aircleaner and make sure that the automatic choke is fully open (it's the butterfly valve in the top of the carburetor -- with the engine warm the valve should be standing straight up) and the stepped throttle (fast idle) cam on the left side of the carburetor is all the way up so that the screw on the top of the throttle arm is. Your Honda CRV Idle Control Valve is designed to keep your motor running at the optimal RPM speed. When your car is new the IAC works remarkably well. Checked for vacuum leaks, etc. I thought the FITV--Fast Idle Thermo Valve was supposed to raise your idle when the engine is cold, that's its purpose, and then when the engine warms up, the valve closes and has no impact on idle at all. I have also cleaned the Air boos Controller which is right next to that. if the idle is too low when cold but runs ok when hot, or ok when cold but then too high when. Kent finally decided to do a video due in large part to the questions we receive from our customers. Designed using state-of-the-art technology and with customers in mind. If not working properly, it can increase exhaust emissions, lower fuel economy, cause rough idle, and carbon up the intake manifold on your engine. There are only 5 normal ways for air to get past the TB: The throttle plate, the base idle speed set screw (BISSS), the ISC, the fast idle air valve (FIAV), and the EGR valve. Warped transmission clutch: Do Transmission Clutch Drag Checks: Brake drag: Do Brake Drag Check: Clutch cut-off valve sticking: Remove and inspect. NOTE: The fast idle thermo valve is factory adjusted; it should not be disassembled. Last Thursday night (7/14/05) I was sitting in my car in a parking lot with A/C running. If the engine backfires or breaks up in the carb, increase the main jet size. Re: Fast idle device, 280 SE 1974 « Reply #5 on: 24 October 2009, 05:42 AM » On a K-Jet system, I believe the thermo-vacuum switch is responsible for a sudden drop in idle speed a few minutes after startup. beste Übersetzungen KFZ/ Automotive Russisch deutsch englisch. Label and disconnect all vacuum hoses from the throttle body, intake manifold, and cylinder head. I'm posting this just in case it will help others narrow down if not solve their high idle issues. ldle Speed Fig. If new safety valve leaks remove cylinder head, inspect and clean reed valve assembly. 031 inch autom trans. We also carry filters, shocks, floor mats, and other useful service parts. When you press on the accelerator, the cable opens the valve inside the throttle body to allow more air to be drawn in. I have an '03 Dodge Stratus with a 2. Clean the valve by soaking it in gasoline. HD Type Carburetter: Tuning (single Carbs) 1 (a) Run the engine up to normal running temperature. If the valve fails or has any issues it can cause the idle speed to be thrown off. Once warmed, the choke needs to stay fully open and the fast idle screw needs to stay off the fast idle steps. Ok time for a moan. (b) Pull out the mixture control (choke) (3) until the linkage is about to move the jet. Run the engine to see if the conditions are improved. Remove two bolts securing resonator to manifold and remove resonator by twisting up and away from throttle body. Now, on the right side, disconnect the electrical connector from the idle control valve, and remove the rubber strap holding the valve to the bracket. Carter YF Problems and Solutions How to find the Carter YF, YFA carburetor number? Which means finding the correct kit. Setting up and adjusting SU/Hitachi carbs on the Datsun Roadster by Keith Williams First things first. 3 10mm bolts to remove 3 ports to be covered up Step 6. When the choke is on, the fast idle cam swings out in front of the idle speed adjustment screw. The Fast Idle Thermo Valve is open when cold, letting more air in. This means the fast idle thermo valve has closed, cutting off vacuum. If the lines are hot and you ARE getting vacuum on that removed vacuum line, you can suspect a bad fast idle valve. If the Idle Speed Screw has to be opened more than 1 1/2 turns then this is also an indication of a lean condition usually requiring jet change. 2) says the fuel level is too high, pull-over is too easy and the engine is idling rich. Basically you tap out a little freeze plug on the back of the FIAV and screw the valve in until it bottoms out - thus blocking all air flow. The expanding pellet then pushes the air bypass valve upward,. 0x16mmPrecision CNC Machined From Aircraft Grade 3/8" 6061 T6 AluminumWill Not Warp or Deform. 031 inch autom trans. Eliminate air from the cooling system. Order Idle Air Control Valve/Motor for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. This valve helps to counter anything that might put an excessive load on the engine of your Volkswagen. You may have to register before you can post: click the register link above to proceed. 6) Idle air bleed plugged up or missing. Honestly that is not that high for a cold idle. perature, the valve closes, reducing the amount of air bypassing into the manifold. Free Same Day Store Pickup. Sometimes it can be something like just a dirty IACV or FITV and they just need cleaning. A Nissan Xterra Idle Control Valve is an imperative part which continues a steady idle rate for the car's motor and is typically modified by means of a control computer. This means the fast idle thermo valve has closed, cutting off vacuum. 2 (VTEC)1992-1996 Honda Prelude 2. EFI Idle Tuning Notes If this is your first visit, be sure to check out the FAQ by clicking the link above. This is controlled by the engine's computer. I'll remove and inspect when possible. Online shopping from a great selection at Automotive Store. A) Remove the N-terminal Fmoc protecting group with deblock solution (typically 20% piperidine in DMF). just take off your intake tube and there is a hole on the bottom left. How to remove and clean the idle control valve (ICV) on 1996 – 2004 Volvo S40 and V40 April 26, 2013 by: manoman48 This is a very simple job that can make your car idle smoother and sort out a few other problems such as occasional hunting and reduce the effect the a/c compressor engaging has on idle speed. Remove the four retaining bolts or screws, as well as the wire assembly, and carefully pull the valve away from the engine. If your SOHC engine is still having problems, check our guides above on how to check your FITV as well as your IAC. We aren’t certain of the need for Honda to implement this IABCT Valve as the K engine reaches operating temperature just as quick as any standard engine. How To Fix Idle Surge. sometimes even dies when cold motor. If the idle remains very high after complete engine warmup, it indicates the thermo valve has remained stuck open. Choke Fast-Idle Cam. ScannerDanner 404,364 views. Choke Linkage Fuel Bowl Idle Speed Screw Throttle Linkage Main Valve Choke Plate Idle Mixture Valve. 7L engines with throttle body fuel injection system: a stuck open EGR valve. TRENDING ON PHOTOBUCKET. I realized that it will idle higher than normal when cold, but this is really high, and I have to keep my foot on the brake pedal or it will take off on me until warmed up. 3 Viton o-rings are included, no additional gaskets are needed. ) When the coolant is not purged after a fill hot coolant does not reach the FITV at normal idle speeds so it opens, raises the idle, which gets hot coolant to the valve and. With the engine running, place one end of the hose near the spring retainer of each intake and exhaust valve; put the other end of the hose to your ear. Some showervalves have a single control which controls temperature and water flow, where others have dual controls which do the same thing but can be operated independently of each other giving greater control over flow and temperature. E46 M3 Idle Drop Issues - Solved! Just thought I'd put this out there as I searched for a few months on this issue before I figured out what it was. If air is trapped in the system it will cause them to not function properly and give you the annoying bouncing/jumping idle. They are available for the following Nissan Xterra years: 2004, 2003, 2002, 2001, 2000, 04, 03, 02, 01, 00. HD Type Carburetter: Tuning (single Carbs) 1 (a) Run the engine up to normal running temperature. YCT IACV IAC Idle Air Control Valve AC299 16022P8AA03 Fits Honda Accord Odyssey Pilot CR-V Acura CL TL MDX V6 3. Cleaning out your IACV will help some, the PCV valve would cause rough idle not really high idle but cleaning/replacing it wont harm anything. The cold idling speed would vary according to the temperature and the main controlling item is the fast idle thermo valve located under the throttle body. If there's vacuum on that line, check the coolant hoses at the fast idle valve. I also pulled the Thermoswitches from the block and I just finished the Continuity test oulined by the Service Manual and Clymers. ^The idle issue is probably either air in the cooling system or the IACV itself. UN LOADER ADJUSTMENT (Refer to Figure 7-8) Check unloader adjustment by holding throttle valve in wide open position and insert a. You may find it necessary to remove the air intake snorkel assembly (don’t forget the MAF connector if equipped) as well as the breather and surrounding vacuum lines to the throttle body, to gain better access to the IAC valve. If this valve is dirty, or not working as it should, then your vehicle will not idle properly. Condition is Used & in excellent working condition. My 2005 Honda Accord I4 is idling fine when cold but once warm it begins "revving" on its own between 1200-2000RPM at about 0. Vacuum problems are the source of all kinds of engine woes. Hi guys, I know this is an old thread but I just bought a Gen 2 which I think has the same problem. Now I'm trying to find the fitv. i was told that when your car engine is on and if you block the left bottom hole in tb, and if it stops the high and low idle then the problem is FITV correct? So the Cleanin the FITV should fix the problem rite? And um what happens if you block that left bottom hole in tb likewith a cork or something. This is the 4th gen. honda forum at Car Dealer Forums; crw wrote in news:1191015556. 125" holes in your intake, to avoid opening the throttle more. To remove the primary and secondary idle mixture concealment plugs, center punch and drill 3/32” diameter hole through the hardened steel plug. Carburetor Basics. On ‘90’s and early 2000’s vehicles, Honda used an idle air bypass valve that’s controlled by a thermo wax pellet. I read the detailed description on the old forum, many thanks Dek, now I'm sure thats what my problem is. For $20-$30 you cant go wrong. Semasa enjin dalam keadaan berhenti, Fast Idle Air Valve dan ISC Servo Motor berada dalam keadaan terbuka. Choke valve should be open and fast idle cam should clear the throttle lever. Then when it warmed up it had a hunting idle from 2k to 2500 rpm. My vehicle has been suffering for the longest time from this high idle and hanging rpms issue. Through reading forums and and other internet sources I have reason to believe it may be the Fast Idle Thermo Valve. It might run fast with your vacuum hoses off, so remove the central idling circuit solenoid wire (Diagram 1 #13) to get the idle below 1,000 rpm. It's a pretty simple procedure. If you become aware that a child under 18 has provided us with personal data we ask that you notify us by email at [email protected] On my vehicle the brown wire (yellow arrow) is a constant ground and the tan / orange and tan / brown wires are the battery volt controls from the HVAC control head. Now, on the right side, disconnect the electrical connector from the idle control valve, and remove the rubber strap holding the valve to the bracket. Its a 1990 4. Remove the FITV by undoing the three 10mm bolts that hold it to your throttle body. You want to just pull back on the tab and then remove that harness, and then remove these two T20 Torx bolts. Thanks guys. 2 (VTEC)1992-1996 Honda Prelude 2. How does an idle air control valve work What is an idle air control valve. FAST IDLE - THERMO VAC. If you have Schrader valves then remove the plastic cap and press the center-pin in the middle of the valve. To locate your Fast Idle Thermo Valve, remove the intake snorkel and locate the FITV beneath your throttle body opening. for everyone that has had idle surging problems with their hondas, it usually has to do with the fast idle thermo valve opening up all the way and letting too much air flow through the valve drastically changing the idle and causing it to surge. i have gotten numerous diagnosis for this problem, but none have worked, i have checked my MAP sensor, oxygen sensor, i have cleaned my idle control valve to no avail, this problem. The purpose of the strainer is to protect the valve and the coil from rust and mud that collects in the piping system. Idle Air Volume Learning is an operation to learn the idle air volume that keeps each engine within the specific range. 5's All electronic injected "drive by wire" 6. Idle Air Control Valve is to adjust the idle based upon the amount of air entering the engine, then the computer reacts to this information by adjusting the cars rpm. Rebuilding a carter ThermoQuad Carburetor from a 1971 340 engine is easier than you think. corey patterson. 180 results for honda prelude fast idle Save honda prelude fast idle to get e-mail alerts and updates on your eBay Feed. Replaced IAC valve, drove to normal op temp at 40-50 mph, no change whatsoever. If there is air flow through the 7 o'clock port,. It should be closed when the engine coolant is over 90 degrees F. 125" holes in your intake, to avoid opening the throttle more. Eurovalve UK was established in 1992 and specialises in the supply of valves and actuators to industry. Replied by Chevord71 on topic 94 Accord Surging Idle I have a '94 Accord, it also surges at idle, Something else though. The symptom you’re likely to notice the most when you have a burnt exhaust valve is a loss of power from the engine and an increase of fuel consumption as the engine is run harder to do the work expected of it. Comments: While trying to replace my valve cover gasket on my 2008 328i coupe N51, I tried to remove the crankcase breather valve see pic on the valve cover because I thought it was removable and I needed to reach the valve cover bolt below it. 0x16mmPrecision CNC Machined From Aircraft Grade 3/8" 6061 T6 AluminumWill Not Warp or Deform. Track the fuel line down to the carb and remove the hose. I thought the FITV--Fast Idle Thermo Valve was supposed to raise your idle when the engine is cold, that's its purpose, and then when the engine warms up, the valve closes and has no impact on idle at all. This page covers getting the 800 RPM back, HOT. Choose top quality brands Standard Motor Products. It was bleeding vacuum at idle causing periodic opening of the EGR valve, which as we all know can cause a rough and inconsistent idle. Whether you are looking to tow or race, we have what you need to make your truck perform. i was told that when your car engine is on and if you block the left bottom hole in tb, and if it stops the high and low idle then the problem is FITV correct? So the Cleanin the FITV should fix the problem rite? And um what happens if you block that left bottom hole in tb likewith a cork or something. Once you hear the miss, turn the mixture screw counterclockwise until the engine runs rough. There are two main types of idle control valves commonly fitted petrol engines with a mechanical throttle: stepper motors and solenoids. If your SOHC engine is still having problems, check our guides above on how to check your FITV as well as your IAC. Be sure the idle speed is a consistent 1200 rpm. An idle air control valve literally bypasses air around a closed throttle plate so the engine can get air at idle. When I remove the voltage from the Idle control Valve, while the car is running= the RPM Rises up to over 1600. Late model engines may not have the cold idle valve. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. Idle air control valve - Mercruiser 4. Detach any wires coming from the valve so you can remove it completely. searchResultsCount }}. A large increase or decrease in closed plate airflow from the calibrated level will not allow this device to effectively control the rpm. 9 idle knob; 1996 johson 70 hp # 2 cylinder rough at idle; 1996 omc binnicle control with fast idle control; 1997 Mercury 3 cy idle adjustment; 1997 Mercury 60hp idle air valve; 1999 mercury outboard 150 efi wont idle; 2000 mercury 40hp outboard rough idle; 2001 Mercury outboard hard to idle after warm ups; 35 hp Mercury slow. 3MPI? My boat won't run at idle and I'm almost positive that it's the IAC (replaced a couple on vehicles with the same symptoms). With the air filter previously removed, block off the IAC air inlet port with your finger or a strong piece of tape. Thanks for the informaton but when I checked it out I found that the "Fast Idle Thermo Valve" is only used on the CRV's with automatic transaxle not the 5 speed manual transaxle like we have. EGR Valve on Vauxhall Astra? The Engine Management System (EMS) light on my sons car was illuminated and a diagnostic check showed that it was the EGR valve that was faulty. Just took my car for a major service and asked if they could clean the idle control valve. I ended up twisting and snapping off the nipple that feeds into the hose. How To: Locate and Clean Your FITV (Fast Idle Thermo Valve) This is on a 93 Honda Civic coupe. If the valve fails or has any issues it can cause the idle speed to be thrown off. honda forum at Car Dealer Forums; crw wrote in news:1191015556. I am trying to fix a chronic low idle problem in a 2002 Lexus ES300. ThermoSpas is committed to protecting children’s privacy and safety on the Internet. November 1 2013 2. 6L 88-95 Honda Civic 88-91 CRX. It was fitted to Australian manufactured Ford vehicles fitted with V8 gasoline engines built between 1977 and 1982. 9: Fast idle cam position adjustment on the Thermo-Quad carburetor Position the fast idle speed adjusting screw so that it contacts the second highest step of the cam. It will also need to be removed to properly clean. Your order may be eligible for Ship to Home, and shipping is free on all online orders of $35. It would go 800 - 2k, sometimes 3k. Honda accord fast idle ? I have a 94 Honda accord. - Install and remove idle cut off valve (5) only with special tool MP 1-508. Use to Delete Fast Idle Valve Solenoid (FITV). This usually resolves idle irregularities. while i was at it i also cleaned the idle air control valves screen that wasnt to bad but figured to do it since i. This problem is almost always caused by carbon deposits which form on the air intake, throttle valve and components of the throttle body, most importantly the Idle Servo Control Motor (sometimes referred to as the ISC, IAC, or "stepper motor"). i have gotten numerous diagnosis for this problem, but none have worked, i have checked my MAP sensor, oxygen sensor, i have cleaned my idle control valve to no avail, this problem. butterfly valve: A valve with a circular body and a rotary motion disk closure member, pivotally supported by its shaft. 6) Check idle air bleed. Working at the heater control valve, squeeze both release tabs and pull the connector straight off to remove it. 17 shipping. Idle Shut Off Valve, 30/31, 30 Pict 2 and 34 PDSIT-2 Carburetors, 058-129-413D Is the valve on the side of the carburetor that provides air to the idle circuit. When the coolant temp is at 147 degrees or BELOW the valve is opened. 2L) I6 isn't a power house, but it has gobs of low RPM torque that makes it a great engine off-road. Disconnect spark plug leads and fuel hoses. 00 and probably 1 hour labor. 21992-1996 Honda Prelude 2. It was bleeding vacuum at idle causing periodic opening of the EGR valve, which as we all know can cause a rough and inconsistent idle. If not, air suction can be felt at the lower port in the throttle body. Ford F150: How to Clean/Replace IAC Valve. Put your finger over the lower port in throttle body and make sure that there is air flow with the engine cold (engine coolant temperature below 30°C, 86°F). Fast Idle Thermo Valve; FAST IV; FAST-1; FAST-CD; FAST-I; FAST-NET. i have a 99 e250 4. 6L GT Mustang suffering from surging, rough or hanging idle? Then you may need to replace your old stock Idle Air Control Valve with a brand new genuine Ford IAC Valve from AmericanMuscle. Hi guys, I know this is an old thread but I just bought a Gen 2 which I think has the same problem. Instructions Preparation. Aka: Fast Idle Thermo Valve (FITV). Carefully remove the rubber vacuum line that is connected to your EGR valve. Buy a 1995 Honda Civic del Sol Fast Idle Valve Solenoid at discount prices. This eliminates vacuum retard control and the ignition timing moves toward advance by approx 15 deg, which provides a fast idle speed after a cold start. If you are using a spacer or adapter, those can cause interference with the throttle plates, and will need to be fixed. Choose top quality brands Standard Motor Products. the main difficulty-unfastened reason is a bubble interior the coolant. A more complete description is found in my article, Keihin Idle Circuits White Paper. Now remove all 12 lid screws using a Torx T-25 male socket. The thermowax pellet, like the one used in thermostats or other fast-idle valves, is located below the air bypass valve. Can you repair fast idle thermovalve or does it have to be replaced if causes erratic idle untill engine warms up to normal opperating temperature?. To eliminate popping on decel. The IACV--Idle Air Control Valve impacts the idle speed at operating temp. You can also use the pinch test when the engine is idleing. This may result in an unusually high or low idle speed, or in some cases a surging idle speed that repeatedly climbs and falls. That is why I ask if this part is a known. Over years, the strainers remove the solids from the chilled water system. Make sure the shank washer is placed on fill valve first (it is designed to seal tank from the inside of tank) and install valve. i was told that when your car engine is on and if you block the left bottom hole in tb, and if it stops the high and low idle then the problem is FITV correct? So the Cleanin the FITV should fix the problem rite? And um what happens if you block that left bottom hole in tb likewith a cork or something. The choke lockout not functioning as it should MAY be telling you that the choke butterfly is never going completely vertical. This will work great for aftermarket custom intake manifolds. 5s have provision for a fast idle for PTO or other use. REMOVAL & INSTALLATION. com FREE DELIVERY possible on eligible purchases. However, the most likely causes come from the basic operating components that control fuel and ignition. If it is brittle, broken, frayed, damaged in any way, or otherwise seems less than perfect, replace it. Remove the intake air duct from the throttl e body. Thermo wax digunakan kerana mudah bertindakbalas dengan kesan haba. I've been reading other posts and by the sound of it it looks like I could have a problem with the fast idle thermo valve or the idle air control valve. The Fast Idle Valve is a component whereby when faulty can cause some starting and idle-linked problems. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. This may result in an unusually high or low idle speed, or in some cases a surging idle speed that repeatedly climbs and falls. so I'm about to go and fault find and hopefully fix and report back here. Condition is Used & in excellent working condition. We would like to show you a description here but the site won't allow us. The incorrect size power valve, or a blown out power valve can cause problems such as poor fuel economy, black smoke emanating from your exhaust, dark or fouling spark plugs and a poor idle. Grounding CIS (test point) does not have any effect on idle. It can be fixed on OBD1, OBD2; D-series, B-series, F-series & H-series throttle bodies, non-VTEC and VTEC. Email & IM. Full credit and many thanks to the original posters. This is for an. 7L engines with throttle body fuel injection system: a stuck open EGR valve. How to remove and clean the idle control valve (ICV) on 1996 – 2004 Volvo S40 and V40 April 26, 2013 by: manoman48 This is a very simple job that can make your car idle smoother and sort out a few other problems such as occasional hunting and reduce the effect the a/c compressor engaging has on idle speed. IACV and FITV Delete. There is a valve called the Fast Idle Thermo Valve. This may result in an unusually high or low idle speed, or in some cases a surging idle speed that repeatedly climbs and falls. The IAC is attached to the left side of the throttle body. This valve is typically mounted on the rad inlet or intake manifold depending on what engine you have. ThermoSpas is committed to protecting children’s privacy and safety on the Internet. Rough Idle Fixed: PCV, IACV, Fast Idle Valve, and more (Did not take any of my own photos, but tried to supplement from other threads to illustrate. If you have Schrader valves then remove the plastic cap and press the center-pin in the middle of the valve. Starts fine hot or cold, and the idle problem only occurs when it's warm. Also for: Corniche, Bentley t series, Bentley corniche. New 6-15-00 This tech paper will discuss the procedure for correct adjustment of the Minimum Idle Speed and for adjustment of the Throttle Position Switch (TPS) on the early C4 Corvette. If your SOHC engine is still having problems, check our guides above on how to check your FITV as well as your IAC. Background - for the past few months I've had some issues where the idle RPMs would drop down to ~600 and then pop back up again. Remove the cover and verify that it is sealed off. 7L HONDA CIVIC L $28. With the valve removed, there are 3 ports exposed. Warped transmission clutch: Do Transmission Clutch Drag Checks: Brake drag: Do Brake Drag Check: Clutch cut-off valve sticking: Remove and inspect. fast idle, thermo valve bypass? Thread Not advised in cold climates where your tb blade can freeze in place and the reduced idle speed from the lack of FITV will. Buy 90-93 ACCORD 92-96 Prelude Fast Idle Control Bypass Thermo Valve FIV FITV motorcycle in Galesburg, Michigan, US, for US $22. Safety relief valve not functioning properly. 7L Honda Accord 1998-2002 V6-3. Additionally the bolt patterns between years are different, but some Manifolds (IE certain years GSR) has the bolt holes to accomodate both. Now, after the valve adjustment the sound of my motor is music to my ears. A Nissan Xterra Idle Control Valve is an imperative part which continues a steady idle rate for the car's motor and is typically modified by means of a control computer. The odor is a result of exhaust leaking either from the valve housing, or through the actual check valve back into the secondary air injection system. If your SOHC engine is still having problems, check our guides above on how to check your FITV as well as your IAC. 3 - 09/16/09 01:19 AM Anyone ever replaced their IAC on a merc 4. Carefully remove the rubber vacuum line that is connected to your EGR valve. When high pressure of 540 psi (38 kg/cm) or temperature of 210 F (105 C) is sensed, relief valve opens, venting refrigerant to atmosphere. It keeps the idle high and gradually decreases the idle as the car warms up. ldle Speed Fig. THERMO CONTROL UNIT An electrical thermo control unit is mounted on evaporator housing. Condition is Used & in excellent working condition. All of our Idle Control Valves are guaranteed to fit if you use enter your Honda Civic into your Year Make Model selector. Eliminate air from the cooling system. We provide incredibly reasonable prices on quality parts. I'm still working on my sudden fast idle problem and ineffectualness of my idle control valve at the fuel distributor (implying vacuum leak). IDLE ADJUSTING SCREW IAC VALVE FAST IDLE THERMO VALVE AIR BYPASS VALVE WAX 4. - Start engine without depressing the accelerator pedal. The idle air screw, used in conjunction with the conventional idle screw is an adjustable idle bypass. There is so much mystery surrounding the CIS (continuous injection system) fuel system Bosch has dubbed K Jetronic, I wanted to try and make some sense of it for all Porsche owners. Fast idle valve is on the underside Step 5 Remove the 3 long 10mm bolts from the underside of the throttle body to remove the fast idle valve. Remove muffler and clean exhaust ports. well the fast idle thermo valve ,is on the top of the motor right on the intake manifold,it has two screws on the top, let engine warm up , take the screws out. Position the fast idle speed adjusting screw so that it contacts the second highest step of the cam. This Honda Idle Air Controller or IAC is under the throttle body and incorporates into the throttle body passages. Instead of using a stepper motor based Idle Air Control valve, your MegaSquirt-II™ controller can be configured for a 'Fast Idle Valve'. It has very little or no effect on off idle and larger throttle openings. Start out on the right side and loosen the hose clamp holding the brake fitting into the intake air boot. Just recently it's developed a rough idle. On top of the carburetor are two screws, the low-speed adjustment screw that goes directly into the carburetor, and the idle adjustment screw that sits against the throttle linkage. Remove the cover and verify that it is sealed off. The fast idle link from the choke countershaft lever down to the throttle linkage is best freed by bending back the top lever just enough to release the link. Idle speed or ignition timing is out of specification. 16022-PLC-J01 Idle Air Control Valve With Gasket Replacement for Honda Civic Acura 2001-2005 1. This is controlled by the engine's computer. Proud owner of a 2004 Mach1. Idle air control motor. I will investigate that aspect and let you know what I find. NOTE: The curb idle and fast idle RPMs are controlled by the Powertrain Control Module (PCM) and the Idle Air Control (IAC) valve. 4 cannot be dissassembled but it can be cleaned Also note that Regina and Bosch IACs are NOT interchangeable if you are considering a replacement. If any of the steps in the cam appear worn or damaged, replace the cam. Remove the intake air duct from the throttle body. If you have Schrader valves then remove the plastic cap and press the center-pin in the middle of the valve. Using a wrench, remove the IAC valve by turning it counter-clockwise (loosen) and remove the valve. The newer power valves use a large gasket that fits into a grove a the edge of the power valve sealing surface. Fast Idle Thermo Valve (FITV) Repair: This assumes the FITV has already been removed from the intake plenum. Thanks guys. Order Idle Air Control Valve/Motor for your vehicle and pick it up in store—make your purchase, find a store near you, and get directions. The aircut valve's job is to momentarily block the air side of the idle circuit (its air bleed, in other words) to make conditions for exhaust afterburn less likely. Additionally, the intake manifold is under vacuum. Start the engine. You can also try resetting the idle air adaption which can really help. EGR Valve on Vauxhall Astra? The Engine Management System (EMS) light on my sons car was illuminated and a diagnostic check showed that it was the EGR valve that was faulty. Start the engine. ) There will also be an overflow hose coming out of the carburetor, remove this hose too. The valve will have to be replaced or cleaned. Choke valve should be open and fast idle cam should clear the throttle lever. 21992-1996 Honda Prelude 2. I’ll remove the part and soak it in some carb cleaner overnight. Check the. NOTICE: On IAC valves that have been in service: Do not push or pull on the IAC valve pintle. 1)Retainer, Pump rod lower 2)Rod, Pump 3)Screw, Fast idle cam 4)Cam, Fast idle 5)Screw, Trip lever 6)Lever, Trip 7)Lever/collar, Choke 8)Rod, Choke 9)Screw, Idle vent valve 10)Shield, Idle vent valve 11)Valve, Idle vent 12)Fitting, Fuel inlet 13)Gasket, Fuel inlet fitting 14)Gasket, Fuel filter 15)Filter, Fuel inlet 16)Spring, Fuel filter 17)Screw, Stat. Electrical connector from IAC valve. Kent finally decided to do a video due in large part to the questions we receive from our customers. Tuning - Single. You'll need some small Torx bits if it's like mine. 16022-PLC-J01 Idle Air Control Valve With Gasket Replacement for Honda Civic Acura 2001-2005 1. Once warmed, the choke needs to stay fully open and the fast idle screw needs to stay off the fast idle steps. Carefully remove the rubber vacuum line that is connected to your EGR valve. As the Fast Idle Valve is factory adjusted, it can be installed or removed but not recommended to be disassembled. it surges between 400-800 rpm constantly. Follow these steps to complete an Idle Relearn: With vehicle at a complete stop, set the parking brake. I try starting it again but the car would just hesitate, hesitate then dies agian. Thanks for looking & please take a look at my other listings. Put your finger on the valve seat area and make sure that there is air flow with the engine cold (engine coolant temperatur e below 86°F , 30°C) and idling. If you have Schrader valves then remove the plastic cap and press the center-pin in the middle of the valve. "Thermo valve in vacuum line between distributer and throttle housing is closed on a cold engine. Flopster843. So basically, it sounds like whatever type of intake system you have, it's going to be set up to have a high idle when the engine is very cold, and the idle will slowly return to normal as the engine heats up. Get Yours Today! We know our parts and products. 3 10mm bolts to remove 3 ports to be covered up Step 6.