Question about 1997 Volkswagen Jetta

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1997 Jetta Jazz hard idle

4 cycl 2.0 automatic 160k miles

After the car heats up and runs for a bit it begins to **** abruptly. also the idle is always at 800 950 range is this normal? if not what is causing it how do i fix this

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  • glauerr87 Jun 21, 2009

    What would i be looking for on the inlet manifold valve? a release or a build up?



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Idle fine but look under inlet manifold for a valve that has water pipes running into it ,might not have any though as models do vary from europe to america

Posted on Jun 20, 2009

  • Colin Stickland
    Colin Stickland Jun 22, 2009

    underneath the inlet manifold ,a connection with two water pipes and a connection from the front part of the foreward of the butterfly .but it might not have one depending on the model .this is a wax type operated valve that allows air from the air filter side of the butterfly to the engine side .Failing which look for another temperature sensor near to the water temperature ,this one controls the auto choke but thinking about it this would only cause starting problems ,better still try cleaning the air flow control sensor .The biggest problem i have here is different units used between models for american market .Compared with europeon models some USA models are completely different sorry i couldnt be of more help



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