Diagram where to find the coolant temapture sensor

Tiny
CHICALITO
  • MEMBER
  • 2001 ISUZU RODEO
  • 3.2L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 119,000 MILES
The temperature moves to half when I make a stop at street light or stop sign and when I start moving again it goes down some millimeters back to cold, what can be causing his issue?

Also the thermostat was replace two and half ago.
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Monday, January 6th, 2014 AT 11:13 PM

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Tiny
CARADIODOC
  • EXPERT
Half scale on the temperature gauge is normal on most vehicles, but if you recognize that as higher than normal on yours, that is not the fault of the sensor. It is just reporting the temperature it sees. To go up when standing still in traffic can be caused by a worn radiator fan clutch. Stop the engine, then try to turn the fan by hand. When it's hot, it should turn with quite a bit of resistance.

The temperature sensor(s) are usually on or near the thermostat housing. There used to be two of them, a single-wire sensor for the dash gauge, and a two-wire sensor for the Engine Computer. Some manufacturers have dropped the single-wire sensor because the instrument cluster is now a relatively unreliable and very complicated computer module, and it gets it information to run the gauges from the other computers. Both of those sensors have an extremely low failure rate because they each only have one simple component inside. Almost all failures in that circuit consist of corroded or stretched terminals in the connectors. A failure in the two-wire circuit will be detected by the Engine Computer which will set a diagnostic fault code and turn on the Check Engine light.
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Tuesday, January 7th, 2014 AT 12:21 AM
Tiny
CHICALITO
  • MEMBER
Ok the thermostat was replace two months and a half ago and the fun clutch in May 2013, and yes the fun clutch is kind of hard when trying to turn by hand.
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Tuesday, January 7th, 2014 AT 6:31 PM
Tiny
CARADIODOC
  • EXPERT
What problem are you trying to solve? Is the engine actually overheating?
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Tuesday, January 7th, 2014 AT 7:50 PM

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