Hey everybody, i've got a 1992 325i and i installed a new idle control valve recently, and i think the car has a high idle... its around 1200RPM !! the problem is that if i turned on the engine and let the car run for a while or if i put the car in neutral while i was in a traffic light, the check engine and the transmission lights come on (the small yellow gear with an exclamation mark inside it) and when i try to take off for example the car will be too slow as if im not on first gear or something!!!! and when i shut the engine off for like 20 secs and turn it back on, that thing disappears!!! do you know what the problem might be probably???!!
If you have a Bentley Service Manual, go to page 130-20 in the fuel injection section....
It has a series of tests to perform to help you find the problem.....if you don't, it will be one of your most important purchases for your vehicle.... you'll need to correct that idle condition, also you need to have the check engine code or codes read. You can either purchase a obd I scanner or just bring it to an Autozone or Advanced Autoparts store & they can read them....for this will help in pinpointing the problem.....
johnny, BMW 3 Series Service Manual E36 Repair Manual (1992-1998) by Bentley
sounds to me like a TPS problem... or idle screw "in" too way deep. OR, thermo time switch gone bad.
but yes, to be sure, take Johnny's advise. the CEL is there for a reason and it is to help diagnose what might be wrong with ur engine & to engine problems to us humans in a language that we all understand ;-)
hey guys, well the problem was caused by the TB sensor which makes sense !!! i also had to change the boot of the mass airflow cause it ws kinda cracked! but i guess TB sensor was the main reason!! the idle now is at 1000 RPM or maybe 900RPM... isnt that a little bit higher than its supposed to be??!
Last edited by g_thebimmer; 07-21-2008 at 11:37 PM.
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