Question about 2000 Chevrolet Impala

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My 2000 chevy impala is overheating ive changed thermostat and waterpump abd it still is overheating.........

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  • Fernand Luc Bergeron
    Fernand Luc Bergeron Jul 05, 2010

    are you getting this because the gauge tells you it's over heating ?

  • jermaine coston Aug 08, 2013




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Try flushing the system.. sounds like you have a leek ?

Posted on Jul 08, 2010


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I have 2008 Chevy impala LS keeps overheating after replaced new thermostat and new waterpump and still overheat. I have to add water to radiator before driving. Any tips or solutions

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My 2003 chevy impala is overheating

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I have a 03 chevy impala keeps overheatin ive changed waterpump thermostat

Ok there are a couple of things to check, first the is to check your fuses for power and also check the relays to make sure thay working the best way to do that is to swap them out with a known good relay, another thing to check is to make sure your cooling fans are working and you can do this by turning on your A/C to verify both cooling fans are running at high speed if thay do not turn on tap the back of the fans motor to see if it turn on, If it starts to turn and then stop the you have to replace what ever one is bad. Good luck!

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05 impala overheating have replaced waterpump thermostat bleed aie flushed radiatore and heater core but still over heates

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Jan 17, 2011 | 2005 Chevrolet Impala

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I have changed my thermostat and waterpump but my 2004 chevy impala still runs hot.... why is that???? its a 3800 engine

Your rad may be blocking up. Make sure the flow of antifreeze is adequate through the rad. Check for loose fins & debris in front of the rad also. Remove the rad cap when cold & allow to heat up to operating temperature. Observe the flow when the thermostat opens. Check the serpentine belt for wear & replace if needed. If the flow is inadequate, replace the rad. Good luck!

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5 Answers

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.

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2001 chevrolet pickup v6 overheating after changing waterpump

If you are not getting heat now, it's because you have an air lock in the system. sometimes it can be difficult to burp the system. try turning the heater on high in the defrost position. run your vehicle with the rad cap off and keep the engine running at about 1500 rpm. That should give the waterpump enough momentom to purge the air through the engine. check around the heater hose area and around the thermostat area for any bleeder screws ( sometimes these vehicles will have 2 or 3 for ease of purging the air). hope this helps and if you need any other info please don't hesitate to write.

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Over heating

sounds like an air pocket or waterpump may be on way out.

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On my 94 (106,000 miles) I did the same thing as you with an overheat problem. It came out of the blue one day driving. Had never had a problem before then wham steam everywhere.. Changed the radiator, waterpump, and thermostat and still had overheating. I backflushed everything and hand flushed the coolant tank to get every last bit of gunk out. Still a problem. Was thinking like the last comment - Cracked head. Well are you ready for the solution.... I neglected to check the radiator cap on the coolant tank. It was original to the car and I just didn't think about it. Changed it out for a new one and no more overheating.. It was obviously not holding the system under much pressure. Enough for a short drive but that's all. All that work for a $10.00 part. Makes perfect sense now as Impalas run hotter than a lot of other cars anyway. Need the pressure kept on the coolant to keep it in check.. Hope this helps... Jeff

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