Engine Temperature Gauge Spike

2004 NISSAN SENTRA
93,000 MILES
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JWTURNER88
  • MEMBER
  • 4 POSTS
Engine temp gauge reads max hot when the ECU tells me that the temp is normal. It happens intermittently. Why?
Jan 6, 2012 at 8:57 PM
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PROAUTOTECH
  • ✓Experienced Mechanic
  • 288 POSTS
engine temp reads only coolant temperature, there are many other temperatures that the ecu monitors.
Jan 6, 2012 at 9:35 PM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,814 POSTS
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 5:55 AM
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