Why is your 2001 Chevy Impala running hot my 2001 Chevy Impala keeps over heating they took out the thermasat but now it still overheating I put waterin it I can drive maybe 30 minutes then it over he?

Answer 1

Or, most likely, the catalytic converter has failed and clogged the exhaust and caused the intake manifold to melt. Chevy issued a letter in 2005 to this effect. I believe the letter stated that Chevy would replace the catalytic converter at no charge if the car is less than 10 years old or has less than 110,000 miles. Call your Chevy dealer ASAP and have it replaced. Unfortunately, from my experience, Chevy will not pay for all the damage caused by this catalytic converter design flaw. So you'll most likely be stuck with the repair costs for the damage caused by the melted intake manifold.AnswerPlugged radiator? Is the fan coming on? If the fan doesn't come on it will overheat no matter what. AnswerFirstly the answers should be taken with some grain of salt. They are not necessarily wrong but it would be difficult to determine the root cause without seeing the car. Overheating on Chevrolet's has been quite common and there are steps you should do before blindly running to a garage.

(1) Check your oil (you are looking for engine coolant) if there is engine coolant in the oil then you have a crack manifold gasket. This maybe covered by GM due to a faulty gasket issue so check with your dealer.

(2) Electrical fan on the engine is not turning on (sensor, fuse/relay or short)

(3) You are using the wrong coolant (universal-green and not dex cool - pink) it does make a difference

(4) Cat can be clogged but it is unlikely that you would be able to run the car for 30 minutes.

(5) You have indicated water (water no longer cools today's modern engine but in a pinch will allow you to get to a service station for replacement)

(6) just made a repair on the same car with the same problem, found that the impeller on the water pump was gone. replaced water pump, flushed system, ran it and never got about 200 deg. hope this helps