VEHICLE STALLS OUT UNDER WHEN SLOWING DOWN OR ...

  • Tiny
  • Anonymous
  • 1999 GMC Jimmy
  • 125,000 miles

Vehicle stalls out under when slowing down or stopping usually starts right back up.

Thursday, January 3rd, 2013 AT 11:35 PM

18 Replies

  • Tiny
  • Wrenchtech
  • Expert
  • 20,042 posts

You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.

Was this
answer
helpful?
Yes
No
Thursday, January 3rd, 2013 AT 11:42 PM
  • Tiny
  • rasmataz
  • Member

Do you have a check engine light? Might want to disconnect the TCC Solenoid and see what happens-could be sticking-start here

Was this
answer
helpful?
Yes
No
Thursday, January 3rd, 2013 AT 11:42 PM
  • Tiny
  • rasmataz
  • Member

Sorry Wrench, didn't see you-I hope you had a wonderful Christmas and New year. I'm good talk later my friend

Was this
answer
helpful?
Yes
No
Thursday, January 3rd, 2013 AT 11:45 PM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,042 posts

No problem Ras. Happy Holidays to you too.

Was this
answer
helpful?
Yes
No
Friday, January 4th, 2013 AT 12:02 AM
  • Tiny
  • rasmataz
  • Member

BTW, I've learned that from you on the TCC solenoid at About -7 years ago-Thanks

Was this
answer
helpful?
Yes
No
Friday, January 4th, 2013 AT 12:07 AM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,042 posts

That's not as big an issue on this later model stuff. You can't simply unplug a connector on these because most of the transmission is electronic control.

Was this
answer
helpful?
Yes
No
Friday, January 4th, 2013 AT 12:15 AM
  • Tiny
  • rasmataz
  • Member

I get it, learn something new again-Thanks

Was this
answer
helpful?
Yes
No
Friday, January 4th, 2013 AT 12:22 AM
  • Tiny
  • kimbenoitconner
  • Member

How do you disconnect the TCC solenoid?

Was this
answer
helpful?
Yes
No
Friday, January 4th, 2013 AT 12:49 AM
  • Tiny
  • Wrenchtech
  • Expert
  • 20,042 posts

You can't

Was this
answer
helpful?
Yes
No
Friday, January 4th, 2013 AT 12:51 AM
  • Tiny
  • kimbenoitconner
  • Member

Oh, ok. Any other thoughts? We tried changing the IAC & it didn't help.

Was this
answer
helpful?
Yes
No
Friday, January 4th, 2013 AT 12:53 AM

Please login or register to post a reply.

Similar Questions