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Engine Temperature Gauge Spike

Tiny
JWTURNER88
  • MEMBER
  • 2004 NISSAN SENTRA
  • 93,000 MILES
Engine temp gauge reads max hot when the ECU tells me that the temp is normal. It happens intermittently. Why?
Saturday, January 7th, 2012 AT 4:57 AM

2 Replies

Tiny
PROAUTOTECH
  • MECHANIC
  • 288 POSTS
Engine temp reads only coolant temperature, there are many other temperatures that the ecu monitors.
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Saturday, January 7th, 2012 AT 5:35 AM
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
It could be a faulty sending unit, poor ground circuit connections or an inaccurate gauge if the coolant are not overheating.
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Saturday, January 7th, 2012 AT 1:55 PM

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