Question about 2001 Volkswagen Jetta TDI

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Jetta overheats when on highway

Jetta overheats when on the highway,only when rpms are high. do i need to flush and put new anti-freeze in?

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  • Jason Neal May 11, 2010

    define overheats...
    -does a warning light appear?
    -is your coolant level a normal levels?
    -how hot out is it?
    -is your A/C running on a hot day?
    -is your jetta a standard, and are you running the rpm's too high while shifting?


    Could you clarify in detail one event where your car overheated, and what was happening.


    Thanks.

  • yadayada
    yadayada May 11, 2010

    is the coolant clean? no rust? no muck?

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  • Volkswagen Master
  • 6,674 Answers

Flush, new coolant & thermostat are always a good place to start, but take a close feel of your rad hoses as well for possible collapsing under high rpm's. If it has some real spongy/soft spots that are easy to squeeze together, it may be a good spot for collapsing and causing restriction, especially at higher rpm's.

Posted on Jun 19, 2009

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  • Master
  • 6,784 Answers

Yes, the flush and new anti-freeze well help greatly. i would also inspect tech thermostat and water pump as well. replace both if found to be defective.

check the operational value of the cooling fans as well. they should cycle in intervals and, run when the AC is activated.

Posted on Jun 19, 2009

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