1998 Pontiac Sunfire Temp Gauge Started Down Replaced Sensor Worked Fine Couple

1998 PONTIAC SUNFIRE
226,321 MILES
Avatar
TERRIWILLIAMS
  • MEMBER
  • 5 POSTS
Temp gauge started going up and down so replaced the temp sensor worked fine for a couple of days now my engine light comes on & gauge is below cold mark? had diagnostic done it says its my temp sensor they cleared it & ran fine for a little while now engine light is back on & gauge not working again
Feb 14, 2013 at 9:54 PM
Advertisement
Avatar
ASEMASTER6371
  • ✓ASE Certified Mechanic
  • 52,796 POSTS
  • ASE Certified Mechanic
clearing codes does nothing. the issue is always there.

thermostat may be a good start. low coolant level could be the issue.

the last is a blown head gasket from overheating

Roy
Feb 15, 2013 at 12:36 AM
Avatar
TERRIWILLIAMS
  • MEMBER
  • 5 POSTS
replaced thermostat , no white smoke coming from exhaust, or leaking in plugs , now when i started it today it didn't want to start & engine light still on could it be a bad thermostat? please help!!
Feb 16, 2013 at 2:10 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.