1996 Toyota Corolla Repair Question
Topics covered: Vacuum leak, Map sensor , Sensor.
Mileage: 164,000 miles.
Mileage: 164,000 miles.
Asked on April 22, 2012
MAP sensor bad?
My car idles really high, 1600-1800 rpm. I sprayed carb cleaner around all my vacuum lines an gaskets to try to find a leak and cane up empty handed. If I unplug the MAP sensor while the engine is running, the idle drops to 1000-1100. The IAC valve was tested and turned out to be good... Is the MAP sensor bad or what else am I supposed to check.
Asked by dansfrazAnswer
Replied on April 22, 2012
no, map good. you either have a vacuum leak, stuck throttle body or bad idle air control motor. how did you test it??
Roy
Replied on April 22, 2012
I didn't physically test it myself, I went to a shop and they ran a test and said it was. Now Im starting to think I may have been lied to just because they couldn't figure it out. Is there a visual way to see if the TB is stuck? And short of a smoke test, whats the best way to find a vacuum leak?
Replied on April 22, 2012
no visual way as 1/32 of an inch will cause this.
listen for a vacuum leak. otherwise get a new shop to help you.
Roy
Replied on April 22, 2012
How do I test my Idle air control valve?
Replied on April 23, 2012
you cannot unless you have a scan tool. it is a process that activates it and retracts it to test.
Roy