Engine Temperature Gauge Spike

2004 NISSAN SENTRA
93,000 MILES
Avatar
JWTURNER88
Engine temp gauge reads max hot when the ECU tells me that the temp is normal. It happens intermittently. Why?
Jan 7, 2012 at 4:57 AM
Advertisement
Avatar
PROAUTOTECH
  • ✓ASE Certified Mechanic
  • 288 POSTS
  • ASE Certified Mechanic
engine temp reads only coolant temperature, there are many other temperatures that the ecu monitors.
Jan 7, 2012 at 5:35 AM
Avatar
KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
It could be a faulty sending unit, poor ground circuit connections or an inaccurate gauge if the coolant are not overheating.
Jan 7, 2012 at 1:55 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.