Rough Idle
#1
Rough Idle
So as the title says I have been having rough idle(100-200rpms) at dead stops and most of the time the car dies. This has been happening throughout the year and it comes and goes, I usually notice that it happens on warm days after I vtec or sometimes just happens randomly on warm days. So far I have have cleaned the IAC valve(did this about 2-3 weeks ago), cleaned map sensor, maf sensor and have recalibrated the ecu a bunch of times but this dam rough idle keeps coming back and its starting to happen more frequently and its super annoying! I have an k&n fipk intake I have cleaned the filter but I think im gonna try and clean it again(maybe this will help?). Also when I was looking at my engine bay I found this around the head area, im not sure exactly where its coming from but it might be part of the problem? Or maybe another problem? lol
I know alot of people have had this problem if so if anyone can share their experience or if anyone knows my problem it would be GREATLY appreciated!
-Thanks
I know alot of people have had this problem if so if anyone can share their experience or if anyone knows my problem it would be GREATLY appreciated!
-Thanks
#2
To start, we don't have a MAF (mass air flow) sensor, so IDK what you cleaned.
Any codes? Dirty filter could cause it, bad fuel injector, map sensor, iat sensor, iac valve. Data stream via a scan tool would work very well for this problem, but I don't expect you to have that at your disposal.
Any codes? Dirty filter could cause it, bad fuel injector, map sensor, iat sensor, iac valve. Data stream via a scan tool would work very well for this problem, but I don't expect you to have that at your disposal.
#3
To start, we don't have a MAF (mass air flow) sensor, so IDK what you cleaned.
Any codes? Dirty filter could cause it, bad fuel injector, map sensor, iat sensor, iac valve. Data stream via a scan tool would work very well for this problem, but I don't expect you to have that at your disposal.
Any codes? Dirty filter could cause it, bad fuel injector, map sensor, iat sensor, iac valve. Data stream via a scan tool would work very well for this problem, but I don't expect you to have that at your disposal.
#4
You must be talking about the IAT sensor on the intake. IAT is intake air temperature sensor. Although you cleaned those sensors and the valve, they could still be causing a problem.
Do you have a voltmeter?
Do you have a voltmeter?
#5
Try the throttle coolant bypass. I did that on my car yesterday and my car doesn't drop under 1k at all anymore. You just block off two coolant lines going into your throttle body/intake manifold area with a couple 3/8 steel balls. This stops the hot coolant from entering and increasing your IAT
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#6
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tlogic
Texas - Houston S2000 Owners
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11-06-2009 11:03 AM