Question about 2002 Volkswagen Passat

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Overheating on long steep hills

Have a 1.8T only overheats on really long steep hills at about 3k altitude...as soon as going downhill ...temp back to normal ....had the
water pump done (twice) and thermostat....someone suggested air bubble might have happened when water pump??? not done under a vacumn or something....clutch fan ?? any ideas anybody

Posted by bwillia1 on

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Tony Rodriguez

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Hi. It is a well known problem on VWs you need to let all the air out , your car should have a valve to do this but if you can not find it try leaving the antefrezze cap of and watch for bubles coming out the water ( with the engine runing ,, ) cold

Posted on Aug 15, 2008

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A few ideas. 1) Try the motor home where you are now and see. Find some REALLY steep hills or something and try it out.
2) If it is an automatic transmission, you may need to purchase a "transmission cooler" kit to add on before you try mountain climbing.
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