92 Chevy Lumina Z34 3.4L 173,000 miles

ERIK WATSON

MEMBER
1992 CHEVROLET LUMINA

When I start my car when it is cold it tends to idle at a really high speed usually between 2500-3500 rpms sometimes if I gun it a little while still in park it will idle down and other times it takes around five minutes to idle down I was told this was somekind of air flow sensor by a friend with obd1 reader can you tell me what this sensor is called and where it might be I was told it might be on the air intake also I have had some problems with my cooling system the sensor that triggers the fans to turn on dosent seem to be working I know the fans are good because I have tested them myself manually and also have them wired to a toggle switch which I just keep turned on when running what is the name of this sensor thank you very much for your time

1 Reply

DNAPRORACING

MEMBER
120 POSTS

I also own a 92 z34. Had the same prob. What I did was change the throttle position sensor located to the right/back of the intake. Also, right below that is an idle air sensor, both run about $40. The other thing I did was take out a pint of tranny fluid and put in a pint of seafoam trans tune. This lubricates the torque control clutch inside the tranny. Since I did this, the car stopped stalling and it idles at 700 rpm. Hope this helps. Its a cheap fix. You will need an allen wrench to remove/install the sensors. Good luck.

Air flow sensor = mass air flow sensor
the sensor on your intake is an IAT = Intake Air Temperature sensor

Gary