Question about 2002 Ford Expedition

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Car raises in idle and decreses at stop light

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May be you should make a diagnostic and you can do it in a garage or you can do it by yourself if you want to do it by yourself you need some tools and you can find some good ones here: http://www.xcardiag.com/

Posted on Feb 10, 2014

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2003 Ford Explorer XLT Wants To Stall At Low Idle,, especially when at a stop light


How does it idle in park , does it run ruff or smooth? Are any lights lit on the dash , check engine etc. ? Could have a partially plugged IAC air passage .idle air control (IAC) valve ! The engine computer uses the IAC to control idle , when under a load such as when put into gear the computer raises the idle ! It does this by allowing more air to by pass the closed throttle into the engine raising the idle ! If these air passages clog they restrict the air flow an cause a idle problem ! Now if it runs ruff at idle in park you could have vacuum leak ! Rough Idle How to Fix Ford Taurus Engine Stalls at Stop Signs

Mar 19, 2015 | 2003 Ford Explorer

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The battery light turns on and then when then when i put my stick shift on neutral i turns off


You have to get the idle adjusted right on the carburetor and at the throttle controls on the carburetor. Nissan varied the idle controls a lot from year to year. Your '85 might be pretty simple and straight forward. I might be able to help you through it. You would want the engine running with the carburetor exposed-so with the engine off, take off the air breather assembly. Yes, they are complicated little pieces to get off, but has to be entirely removed. There will be one vacuum connection to pull off from the bottom of the assembly. This is manifold vacuum, so you don't want to leave it open, will make the engine run funny-rough- close it with a golf tee, or a screw or bolt that fits in the hose end tight. Check for other vacuum lines, may be other small lines that are actually fresh air vents. If there is an electrical connector to the breather assembly, just unplug it at the engine. That would be an air temperature sensor , if so equipped. Now you can see your carburetor controls, look for an idle speed screw that you can turn in to raise the idle, raising the throttle plate raises the idle.

Dec 30, 2013 | 1985 Nissan Pickup

1 Answer

Idle surging down a little when at stop lights in my 2000 mustang 3.8 never dies but seem's close.every 6 to 10 seconds no difference noticed while driving down the road. changed AIC valve for a c


probably cause by the a/c cutting in and out or running at idle . Fit an idle compensator to the system throttle or raise the idle speed 300rpm.

May 26, 2013 | 2000 Ford Mustang

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My vw passat (an automatic) stalls when I have to come to a stop a lights, or even sometimes when I have to slow right down to an 'almost' stop - any ideas what the problem might be ????


Probably the IAC which control the idle but usually you will see some erratic idling as well. Pretty sure something to do with the control of idle and fuel. Maybe you need to clean throttle body and raise idle some might help. Have IAC checked. 

Jul 09, 2010 | 1990 Volkswagen Passat

1 Answer

My saturn dies everytime i come to a complete stop. The idle raises and lowers then it dies. My interior lights go dim and bright while its doing this. I replaced the battery


IF YOU REPLACED BATTERY.YOUR PCM LOST IT MEMORY.YOUR CAR HAS TO RELEARN TO IDLE.YOUR BEST BET IS TO TAKE IT TO DEALERSHIP TO GET THE IDLE RESET.CAR STALLING OUT IN TRAFFIC CAN BE DANGEROUS.

Jan 13, 2010 | 2004 Saturn VUE

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I have a Mistubishi eclipse GS 2.4 four cylinder the car idles extremely low and sometimes dies when i am sitting at stop lights out of gear or when i come to a stop and have it in nuetral. But when i turn...


your idle speed too low.take it to a dealer.they have to reset idle.it should be 600-800 rpms.when you turn on air conditioner.the computer steps up idling to keep engine from stalling .your curb idle too low.

Jun 22, 2009 | 2001 Mitsubishi Eclipse

1 Answer

Idle raises at a stop.


When you have the car in gear there is a load on the engine. If you are for some reason not getting good fuel then its trying to compensate by kicking the idle up. When you are just in park there is no load so its not struggling. Regularly using a fuel system cleaner will help with rough idle, as well as hesitation. Also it might be good to check the fuel pressure regulator.

Feb 17, 2009 | 2000 Chevrolet Malibu

1 Answer

1988 de ville


if your EGR valve is stuck open its adding "false" air into the cylinders.  (just like a vacuum leak)  the engine will raise its idle speed to prevent the engine from stalling at idle.  the EGR should not be open at idle.  

Jan 26, 2009 | 1988 Cadillac Sedan DeVille

1 Answer

Engine idles higher at stop light


It has a problem with the idle quality..when you use the heater with the a/c compressor it will raise the idle and get the fuel it needs to run...look for vacuum leaks.....hissing sucking sounds

Nov 17, 2008 | 1999 Ford Taurus

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