Engine idles rough

2003 GMC YUKON
170,000 MILES
Avatar
BUGS7232
  • MEMBER
  • 1 POST
The 5.3 engine in my 2003 GMC Yukon,idles very rough with the rpm's loping between 400-1000. Seems to be worse when damp or wet outside. Idles so rough at times, the engine dies.No codes, no check engine light, no warnings. Any ideas?
Sep 19, 2012 at 1:11 PM
Advertisement
Avatar
HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
try cleaning the throttle plate on both sides with choke cleaner and see if that helps, it may be gummed up.make sure to hook up air ductingwhen done.
Sep 19, 2012 at 1:22 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle