SPONSORED LINKS

MAP sensor bad?

Tiny
DANSFRAZ
  • MEMBER
  • 1996 TOYOTA COROLLA
  • 164,000 MILES
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.
SPONSORED LINKS
Sunday, April 22nd, 2012 AT 9:36 PM

5 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
No, map good. You either have a vacuum leak, stuck throttle body or bad idle air control motor. How did you test it?

Roy
Was this
answer
helpful?
Yes
No
Sunday, April 22nd, 2012 AT 10:00 PM
Tiny
DANSFRAZ
  • MEMBER
  • 9 POSTS
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?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, April 22nd, 2012 AT 10:47 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
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
Was this
answer
helpful?
Yes
No
Sunday, April 22nd, 2012 AT 11:11 PM
Tiny
DANSFRAZ
  • MEMBER
  • 9 POSTS
How do I test my Idle air control valve?
Was this
answer
helpful?
Yes
No
Sunday, April 22nd, 2012 AT 11:29 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You cannot unless you have a scan tool. It is a process that activates it and retracts it to test.

Roy
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, April 23rd, 2012 AT 12:01 AM

Please login or register to post a reply.

Related MAP Sensor Content

VIEW MORE

Sponsored links