2005 Chevy Impala ovewrheating

2005 CHEVROLET IMPALA
74,000 MILES • V8 • FWD • AUTOMATIC
Avatar
JR1367
  • MEMBER
  • 1 POST
occasionally the car temperature indicator shows it to be overheating, however, when checking under the hood, no indication that the engine is hot. Could this perhaps be a sending unit defect?
Nov 24, 2008 at 1:40 AM
Advertisement
Avatar
RENAUDTN
  • ✓Experienced Mechanic
  • 636 POSTS
Have you checked the actual temperature at the thermostat housing with a thermometer (infrared thermometer)?
The same reading would rule out your coolant sensor.
If you have a scanner that reads sensors input, you could also hook it up and compare the temp reading received by your pcm and the reading you get from a thermometer.
You need to find out for sure if your car is indeed overheating when the temp gauge goes up.
Nov 24, 2008 at 3:16 AM
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