, ROUGH IDLE

2004 GMC Envoy

Tiny

dennis2714

July, 16, 2011 AT 6:34 PM

Had battery disconnected on 2004 Envoy, 4.2L. After reconnection, vehicle idled rough and nearly stalled when a/c kicked on. Forum stated that throttle body needed to relearn after being disconnected but could also be dirty. Cleaned throttle body and reassembled. Now even worse. Check engine light and reduced power light are now on. Everything worked fine before I disconnected battery so I don't think there is actually anything bad. What do I do?

FOUND 2422 RELATED QUESTIONS

1 Answer

Tiny

rasmataz

October, 14, 2011 AT 2:00 AM

Check engine light on
http://www.2carpros.com/articles/service-engine-soon-or-check-engine-light-on-or-flashing

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis,finding out what's going on.

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