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Idel speed how to repair setting the idel rpm

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Can only be done with a scanner.

Posted on Jun 12, 2014

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1 Answer

Why does idle speed surge?


Thread: 6.0 V12 XJS High RPM When Warm - Jaguar Forum.co.uk

www.jaguarforum.com/showthread.php?t=54266
Mar 3, 2013 - I recently bought a 1993 6.0 V12 XJS and when it is started from cold it runs ... to 1300 RPM so it wants to surge forward when braking which is strange. ...Classics · XJS 3.6,4.0,5.3 & 6.0; 6.0 V12 XJS High RPM When Warm ... You might want to adjust the aux (extra) air valve to bring the idle speed down.

Sep 25, 2015 | 1989 Jaguar XJS 5.3

1 Answer

What can i do to reduce idel down to 100 rpm on a 1990 vn v6 even if the speed cable is not on?.


You probably mean 1000 RPM. Sounds like Injector and fuel pressure problem. Could be the control box.

Feb 13, 2015 | Cars & Trucks

3 Answers

Low rpm at idel


Sounds like there is a vacuum leak. I's there a check engine light on? If so is there any lean codes?

Jul 13, 2013 | 2003 Ford Taurus

1 Answer

Idels to high when running


I am going to assume this is a full size Bronco with a 4.9 or 5.0 engine.
The computer controls the idle speed by the amount of air allowed into the intake thru the idle air control valve.
If the throttle body is dirty or the valve fails, or if you have a serious vac leak, the engine RPM will be higher than normal.

Sep 16, 2012 | 1987 Ford Bronco

1 Answer

Idel problem on 5.7 1995 silverado


You engine is TBI, It uses a MAP sensor check the vacuum line for crack and make sure yo have a good seal, The distributor also check and make sure the pick up does not have corrosion which causes the relutor to stick. As for the EGR it would cause a misfire, and yes the do fail. I am sticking with the IAC as a problem its a stepper motor and has a high failure rate, chack also the ECT (engine coolant temp sensor) for corrosion that gives false reading.

Mar 05, 2012 | Chevrolet Silverado Cars & Trucks

1 Answer

Engine idels at 3000 rpm after replacing carb and vacuume lines with new parts.


There should be an idle speed adjustment screw near where the throttle linkage connects to the carburetor. Turn it CCW a number of turns until the speed drops down. Make sure the choke has completely released before making this adjustment. Hope this helps!

Sep 23, 2010 | 1985 Nissan Pickup

1 Answer

Starts but will not idle


Most Lesabre have the 3.8 engine. The engine has a device called an automatic idel speeed motor or AIS for short. It's held on with two torx 20 screws and a 4 wire electrical connector on the side of the Throttle body. BUT BEFORE YOU GO REPLACING THIS DEVICE THAT CAN COST OVER $50. Try this first. Don't drive the car around this way just test it! Remove the big vacume hose from the power brake booster and put your finger over the end of the hose going to the motor. Have an asstant start the car and hold the gas so it'll keep running, trying to go as slowly as they can. Slowly remove your finger from the end of the hose and the motor should pick up speed. you should be able to get a good idle with your helper completly of the gas. if you do the idel motor is'nt working ( right) so your not done checking. Let's say you can't even get a fast idel that stays. The timing chain needs checked and other vacume or engine control codes need checked. Has the check engine light been on? ( with the engine running) . If it has the idel motor will set a code as will a cam senser and all the other sensers on the car. Follow code charts if a code is found. Most auto parts stores will check your car for free for codes but their recomendations very with the experience for the operator of the tool, and if they were good enough to make the mechanics money why are they in a parts store? If you can acheive a good idel playing around with the vacume hose then put it back on and go to the next step. Remove the Idel motor and clean it and the hole it came out of with oven cleaner. Just like cleaning an oven don't get it on you or the wiring part of the motor. With an OHM meter the pins will show two different pins hooked together ( two Pair) If you get only one it's bad. Every pin is connected to just one other pin. If not it's bad. You can get new cheap ones that are bad. I use cheap ones and cross my fingers. If they work the first time their good for a long time. Then you have to learn the idel. Try to learn the idel with the old one cleaned first. Start theengine and hold the idel with the gas pedel. after holding the speed at 2000 Rpm for two minutes ( a good engine will do this easy) let off slowly it should idel down slowly then (catch) and speed back up on it's own. If it does your fixed and go on your merry way.

Feb 15, 2010 | 1999 Buick LeSabre

1 Answer

When started idels high about 2000 rpm then drops when hot cold ?


the iac probably has carbon built up around it this controls the idle speed try cleaning it first,if not it could be a bad iac or a vaccum leak that the iac takes some time to compensate for to control idle.

Sep 17, 2009 | 2002 Jeep Wrangler

1 Answer

Ideling up and dowen from 1000 rpm to 2000 rpm


Check your air inlet and vacuum hoses for leaks. Make sure the connections are tight. Normally it will be an unmetered air problem.

Jan 04, 2009 | 1999 Honda Accord

1 Answer

My honda accord 1991 ex


I had this same problem. All you have to do is adjust the high speed idle setting.

Nov 19, 2008 | 1991 Honda Accord

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