Question about Pontiac Firebird

2 Answers

Radiator electric fan not working

2001 firebird - 3800 - overheating - replaced the thermostat & waterpump a few months ago - just replaced the temperture sensor - still showing to be running hot but the hoses are cool & fans aren't coming on (unless sensor is unplugged)

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  • Pontiac Master
  • 2,899 Answers

Fan not working?, Try this procedure:

  • Dirt and debris can get lodged in the radiator air flow paths. This can block the radiator and cause your engine to overheat and damage the engine.

  • The thermostat can be stuck close. If you feel the upper hose very hot and the lower hose cooler than normal, it may be a stuck thermostat.

  • Make sure the radiator and the overflow bottle are filled to the proper levels.

  • Bleed air from the coolant system:This is best done by running the engine with the radiator cap off until you see when the air bubbles stop coming up.

  • Check the radiator fans: The easiest way is to turn on the cars air conditioner and turn up the A/C fans. Both radiator fans should come on when the A/C starts

  • Make a pressure test by using a pressure testing tool (available at most auto parts stores). Use the pressure shown on your radiator cap. Most cars are 16 PSI or less, so don't exceed that pressure. Replace the radiator cap if it doesn't hold the pressure.

Posted on Apr 18, 2015

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  • Contributor
  • 56 Answers

May be a clogged radiator, air in the coolant line, low coolant? fan relays?

Posted on Apr 03, 2014

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Posted on Jan 02, 2017

salsaurbana
  • 56 Answers

SOURCE: I got a new thermostat,thermostat

Clean the radiator or change it. Because if the radiatos is clogged, not even will work with the electrical fan.

Posted on Sep 20, 2008

mnabi01
  • 94 Answers

SOURCE: cooling fans on 2001 chevy malibu will not come on unless ac on

the relays control circuit is grounded by ECM (computer) . to check this make sure the is hot enough for the fans to be commanded on by computer and check to see if you have voltage at relay and it has ground from computer . you may need ECM.
good luck

Posted on Jan 28, 2009

hotrodtod38
  • 141 Answers

SOURCE: Honda Accord 1995 temp sensor

maybe this will hel57436774p you

Posted on Feb 17, 2009

  • 1 Answer

SOURCE: 1999 cadillac deville overheating

my husband did everything that everyone else did that had this overheating problem. It was so weird that my engine cooled at a light and heated up going down the road. I have a north star 4.6 engine and this is natorious for happening. my check engine light also came on and so I had a diagnostics done which told me my #1 injector wasn't firing , car ran like **** as well. After putting in a new water pump and plugs,ect. and realized injector was good a friend told him we could have a blown head gasket. So just to see if this was the problem I went to buy a bottle of glassbeads and the auto parts guy told us to purchase a bottle of BARS STOP LEAK BLOCK SEALER NOT RADIATOR BUT BLOCK SEALER $31.99 . He followed the directions and we waited 24 hrs. before driving it. What ever the problem was has stopped my car runs like brand new and I am loving it again. no over heating no injector problem, runs great.......I hope this helps. I know its probly a temperary fix but its a fix and now we know what the problem was. SASSY

Posted on Mar 19, 2009

steve_e_uk
  • 1675 Answers

SOURCE: Overheating Polo

this sounds like a thermostat fault, but also could be the sensor switch to the radiator but is more likely the thermostat, it should be located at the front top of engine, follow the top water hose to the engine and you will find the thermostat housing, also just a heads up, these had a problem when first made, according to the known fixes and problems with VW's the hoses corroded inside and started loosing water, this could be wise to get the system presure checked to...hope this helps

Posted on Feb 08, 2010

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