VEHICLE STALLS OUT UNDER WHEN SLOWING DOWN OR ...

1999 GMC Jimmy

Tiny

Anonymous

January, 3, 2013 AT 11:35 PM

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

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18 Answers

Tiny

Wrenchtech

January, 3, 2013 AT 11:42 PM

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.

Tiny

rasmataz

January, 3, 2013 AT 11:42 PM

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

Tiny

rasmataz

January, 3, 2013 AT 11:45 PM

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

Tiny

Wrenchtech

January, 4, 2013 AT 12:02 AM

No problem Ras. Happy Holidays to you too.

Tiny

rasmataz

January, 4, 2013 AT 12:07 AM

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

Tiny

Wrenchtech

January, 4, 2013 AT 12:15 AM

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.

Tiny

rasmataz

January, 4, 2013 AT 12:22 AM

I get it, learn something new again-Thanks

Tiny

kimbenoitconner

January, 4, 2013 AT 12:49 AM

How do you disconnect the TCC solenoid?

Tiny

Wrenchtech

January, 4, 2013 AT 12:51 AM

You can't

Tiny

kimbenoitconner

January, 4, 2013 AT 12:53 AM

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

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