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I have a 2005 Impala and it keeps overheating. Can't find a leak and changed the thermostat. Sometimes it will do just fine and other times it won't. Any suggestions?

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  • Cars & Trucks Master
  • 14,378 Answers

How is your belt,is it need replacing,is tensioner keeping enough tension to keep water working properly.

Posted on Dec 05, 2012

  • Michelle Brown Dec 05, 2012

    The belt seems fine. Any other suggestions?

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  • Cars & Trucks Master
  • 2,101 Answers

Yes you have the common gm intake manifold gasket leak. it is a big with gm motor

Posted on Dec 05, 2012

  • 2 more comments 
  • Michelle Brown Dec 05, 2012

    Is this a big job to be fixed? And how can u tell for sure that's what it is?

  • teds repairs
    teds repairs Dec 05, 2012

    it is a very big job and can lead to a head gasket. every motor chevy has in the cars ,trucks and vans from 1995 to 2013 leak

  • teds repairs
    teds repairs Dec 05, 2012

    here is a picture of a intake manifold gasket leak

  • teds repairs
    teds repairs Dec 05, 2012

    I am on facebook. ted's repairs in connecticut

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Posted on Jan 02, 2017

bigawgntown
  • 13 Answers

SOURCE: Thermostat on 2002 Chevy Impala

the best thing to get is the Haynes manual for your car at advanced auto or autozone or somewhere like that and the book will tell you how to take everything apart and put it back. i think the manual is about $16.00

Posted on Jul 30, 2008

Benimur
  • 6966 Answers

SOURCE: Overheating in 2005 Silverado

Hi and welcome to FixYa,

Appreciate the direct "Ask me".

To your overheating concern, a few ides you could consider/explore:

  • radiator fan/fan motor. Some models uses a silica oil clutch while others require that the A/C or heater be turned on otherwise the radiator fan will not engage;
  • clogged radiator;
  • too little antifreeze, too much water in the coolant mix;
  • too soft radiator hoses;
  • the thermostat was installed in reverse or out of position.
Good luck and Thank you for using FixYa. Happy Holidays.

Pls be informed that due to my current rank and rating, even a Helpful would be detrimental to my status. Should this solution not address your concern, it would be appreciated if you could just not rate it at all. Cheers.

Posted on Dec 25, 2008

  • 298 Answers

SOURCE: Overheating fiat seicento

I hope you have managed to solve the radiator problem by now. Seicento seem to suffer from water flow blockage in the heater blower area. I recommend you check the piper behind the carburator and make sure water is flowing. Normally when these pipes are blocked, water will flow back to the expansion tank and start leaking through its cap. You can also open the small screw on the small pipe coming out from the back panel behind the carburator and see whetehr water flows. Also, if the water is heard grumbling when engine is switched off, it is highly likely that the water is not flowing through the heater unit. Hope this helps.

Cheers,
Andrew

Posted on Mar 29, 2009

SOURCE: replaced waterpump, still overheating lights comes on

Check to see if there is water in the oil...If there is water in the oil then it could have a head gasket problem..Did you ever replace the thermostat? If it is stuck then it would also cause overheating...Excessive exhaust backpressure because of a clogged catalytic converter could also cause overheating..Also check belt tension and condition. A loose belt that slips may prevent the water pump from circulating coolant fast enough and/or the fan from turning fast for proper cooling...Another thing it could be is a faulty Water pump -- Any wobble in the pump shaft or seepage would call for replacement. In some instances, a pump can cause an engine to overheat if the impeller vanes are badly eroded due to corrosion or if the impeller has come loose from the shaft. The wrong pump may also cause an engine to overheat. Some engines with serpentine drive belts require a special water pump that turns in the opposite direction of those used on the same engine with ordinary V-belts... Also check the Fan -- With mechanical fans, most overheating problems are caused by a faulty fan clutch, though a missing fan shroud can reduce the fan's cooling effectiveness by as much as 50% (depending on the fan's distance from the radiator) which may be enough to cause the engine to overheat in hot weather or when working hard.

Posted on Apr 18, 2009

  • 6 Answers

SOURCE: 1999 chevy cavalier keeps overheating,

these cars are notorious for that.It needs to be "burped" when your car is cold then open the resivoir(coolant).Start the car .As it warms you will notice the tank level will rise.Do not let it boil over!! when it starts to get warm then turn the car off and watch for bubbles in the resivior.add more coolant as the bubbles come out .repeat until no more bubbles come up.The problem with these cars is that an air pocket forms in the water pump.

Posted on May 11, 2009

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I suspect you need to have your radiator cleaned at a radiator shop. This requires special tools and the use of dangerous chemicals.

Jim Hart

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