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Where do i find the sensor that turns the front fans on

Dash guage reads ok but engine running very hot

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  • Cars & Trucks Master
  • 2,474 Answers

I don't know what you have , but most use a temp sending unit most are mounted next to thermostat and some are mounted on radiator , try starting a/c and see if fans start ,at least you'll know circuit is good .

Posted on Nov 08, 2014

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Posted on Jan 02, 2017

Benimur
  • 6966 Answers

SOURCE: Engine Temperature Guage on Dashboard indicates overheating

Hi and welcome to FixYa,

Offhand, your described condition indicates a sticking thermostat, that is there is considerable delay before the thermostat opens. It is also possible that there is some restriction wherein the thermostat is not opening completely when the triggering temperature has been reached. As a test and to confirm, you could try temporarily removing the thermostat and operate the engine without one; observe temperature. The side effect of this test is that it would take some time to warm-up the engine, but operationally should not cause anything untoward. Of course, care has to be exercised that the gasket would still be intact.

Good luck and thank you for using FixYa.

Posted on Feb 11, 2009

  • 3 Answers

SOURCE: 1999 buick century 3.0 v6 engine cooling fan not turning on soon enough allowing the engine to run hot. Is this a sensor control problem that is an easy replacement?

u need to buy the special coolant to your car i have the same car whit the same problem and is cause to the incorrent cooland the cooland to your car is the  DEX-COOL  if u dont find that u need some hit       (silicate-free) 

Posted on Apr 29, 2009

  • 155 Answers

SOURCE: 95 camaro engine runs hot but will stop if I turn

Sounds like the thermostat!

Posted on Jun 10, 2009

  • 1 Answer

SOURCE: 1989 - GMC Sierra 3500 4x4 has 2 issues: 1) dash

put a remote starter cycloid on the firewall that's hooked to the one on the starter to get rid of the having for it to cool in order start it. At least that solved my problem. As for the brake light flashing..well mine does too but everything works....it's most likely a short somewhere. The biggest problem is driving off with the parking brake set. As for the hood. My paint is fried as well. I think it's because there is no insulation installed under the hood. Who knows. Good luck

Posted on Dec 30, 2009

emissionwiz
  • 75077 Answers

SOURCE: '08 silverado. dash board diplays, engine running

P0128 OBD-II Trouble Code Technical Description

Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)
What does that mean?

This means that the engine's PCM detected that the engine has not reached the required temperature level within a specified amount of time after starting the engine. The intent of the P0128 code is to indicate a faulty thermostat. Similar codes: P0125

In determining the engine did not reach a "normal" temperature, it takes into account the length of time the vehicle has been running, the intake air temperature (IAT) sensor reading, the engine coolant temperature (ECT) sensor reading, and the speed of the vehicle.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook Symptoms

You will likely not notice any drivability problems other than the MIL illumination.


Causes

A code P0128 may mean that one or more of the following has happened:

Possible Solutions

Past experience indicates that the most likely solution is to replace the thermostat. However here are some suggestions on troubleshooting and repairing a P0128 OBD-II code:

  • Verify coolant strength & level
  • Verify proper cooling fan operation (check if it's running more than it should). Replace if necessary.
  • Verify proper engine coolant temperature (ECT) sensor operation, replace if necessary.
  • Verify proper intake air temperature (IAT) sensor operation, replace if necessary.
  • If the above items check out good, replace the thermostat


Posted on Oct 26, 2010

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1992 olds cutlas 3.3litre a/c clutch comes on and off continuiously weather a/c is called for or not on the dash.engine cold or hot. rad fan also comes on when engine is cold and hot keeps cycling. when...


ok the ac will cycle even if its not on thats the way the factory has it set up.
the fan will also cycle the same way. but the temp of the motor has to do with
the thermostat thats whare i would be looking the thermostat may be bad
when you pick up a new one test it if it says 180 deg. that is when its wide
open check it with a temp guage a house hold type in a pot of boiling water
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i hope this helps you BOB !!!

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