2000 GMC Sonoma RPM ISSUE

2000 GMC SONOMA
Avatar
EARTHURY
  • MEMBER
  • 1 POST
Engine Performance problem
2000 GMC Sonoma 4 cyl Two Wheel Drive Automatic

After driving 35 miles on the freeway to work, when I got off I notice the tackometer jumping from 5 to 15000 RPM'S. I had no problems driving the freeway at 65 miles per hour at a steady 22 RPM'S while in cruise control. I don't notice any problems driving around town or short trips. Any advice you could give would be greatly appreciated.

Thanks
Sep 21, 2009 at 6:49 PM
Advertisement
Avatar
CFREESE1977
  • MEMBER
  • 7 POSTS
As a owner of a GMC Sonoma I had the same problem with RPM's shooting upwards. I replaced the throttle control sensor. It runs about $25.00. It is round with a female plug adapter. The inside has a half moon female hole that fits on the throttle control shaft. What happens is the half moon over a period of time waddles out of shape. Hence, the throttle control sensor in layman terms is cheaply made. I replaced the same control unit twice within a 12 month period. Anyway, replacing the control should fix the RPM problem. Also, the Throttle control sensor is easy to replace. But, you will have to move the air canister out of the way to get to it. Good luck.
Oct 7, 2009 at 10:03 PM
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 Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.