2004 GMC Envoy Won't Idle

2004 GMC ENVOY
Avatar
PEDOCKIE
  • MEMBER
  • 1 POST
2004 GMC Envoy 6 cyl Four Wheel Drive Automatic

Installed a new alternator and belt today. Now the car won't idle when the A/C kicks on. Idles fine without the A/C. The tach fluctuates from 700 to 400 and dies. We didn't have any problems with the idle before we put on the alternator and belt.
Jul 17, 2010 at 7:03 PM
Advertisement
Avatar
RASMATAZ
  • CERTIFIED EXPERT
  • 75,992 POSTS
The idle air control valve is probably relearning its target speed
Jul 17, 2010 at 7:11 PM