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Ford Escort Rough Idle

 
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paulmod




Joined: Jul 08, 2011
Posts: 337



(Msg. 1) Posted: Sat Jul 16, 2011 6:13 am
Post subject: Ford Escort Rough Idle

http://Ford-Mercury.autoforumz.com/Idle-Issue-93-Ford-escort-ftopict155997.html (Idle Issue - 93 Ford escort)
Hello, I have a 93 for escort, when I start the car cold then idle is fine, but if the motor is warm, then the car starts rpm goes to 1000 like normal and then drops down to below 100 and sometimes stalls, then goes back to normal. Also lately it started getting worce were idle while on park goes..
IAC valve, sometimes called ISC valve, is worn.
In article , says... There are a couple of valves and sensors that can cause idle problems. It's also not uncommon for the intake manifold gasket to get leaky.
Have you cleaned the MAF sensor? Have you checked for vacuum leaks? (including all devices that use vacuum)

http://Ford-Mercury.autoforumz.com/HELP-1990-Escort-GT-Idle-High-2000-rpm-ftopict91305.html (HELP! - 1990 Escort GT Idle High at 2000 rpm)
Hello, Pulling KOEO codes 41, 42, 65 and 86, lean condition, no EGO switching, etc. all likely related to the same problem, unmetered air. I think I have covered most of the bases here... with the engine base timing at 10d bdc and the throttle set up to ~1000 rpm with IAC unplugged, when I plug th..
Hi Matt The iac will control the idle. I did how evr noticed you did change this part but it could be faulty. Have you checked your sensor in the exhaust? This might be another problem.
I replaced the EGO earlier this year. I don't think it is the IAC, the idle speed is the same with it plugged or unplugged into the ECA. I am considering pulling the injectors and installing new O-..
1. unplugging and seeing idle NOT CHANGE tends to show that MAY be the problem! - I'm referring not to not just the solenoid itself, but also to the valve it controls, - with IAC valve removed fr..
Doesn't the car stall when you unplug the Iac? I tried it and thats what happens I think yours Matt is faulty or pluged try anonther one.

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Idle Issue - 93 Ford escort - Hello, I have a 93 for escort, when I start the car cold then idle is fine, but if the motor is warm, then the car starts rpm goes to 1000 like normal and then drops down to below 100 and sometimes stalls, then goes back to normal. Also lately it..

HELP! - 1990 Escort GT Idle High at 2000 rpm - Hello, Pulling KOEO codes 41, 42, 65 and 86, lean condition, no EGO switching, etc. all likely related to the same problem, unmetered air. I think I have covered most of the bases here... with the engine base timing at 10d bdc and the throttle set up t...

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