Question about Pontiac Firebird
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)
Fan not working?, Try this procedure:
Posted on Apr 18, 2015
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
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.
Posted on Jan 28, 2009
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
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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