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Julian Adams
Julian Adams Posted on Mar 20, 2009
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1986 jetta oil pump location and replacement/knock sensor

Was told the oil pump was bad and needed replacement, not sure where it is located or how to change, also said the knock sensor needed replacement..what is this?..and where is it located

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  • 4 more comments 
  • Julian Adams Mar 20, 2009

    Not sure to the reasoning, was just told they both needed replacement..the car is a 1.8L 8v engine, will crank over, has lots of spark just no oil pressure(I was told), checked timing at the belt and Distributor Everything is where it should be figure the knock sensor may have retarded the timing, that is what they do if i am correct...sorry first post was done by the G/F...she means well..lol

  • Julian Adams Mar 20, 2009

    Digi 1, GL,...My real question was with little info I currently have would this be a good start?

  • Julian Adams Mar 21, 2009

    "the car is a 1.8L 8v engine"...As I stated the original post was by the G/F trying to help out, I replaced the oil pump/ knock sensor, After cleaning out the base pan and tube, I also re-calibrated the timing added new plugs, wires, Distributor cap and button also as a precaution replaced water pump and timing belt as well....Car fired right up and runs fine



    Thanks

  • Anonymous May 11, 2010

    What kind of oil where you using in your vdub ? Anything other than 15 40 Diesel grade is not recommended by Volkswagen for all engines 97 and older. Like "passatsyncro" mentioned you have to drop the oil pan and two bolts hold the pump on. As for the Knock sensor it is located on the passenger side (right side of engine) right beside the timing belt cover, it should be held on with one bolt 10mm I think.

  • Anonymous May 11, 2010

    Need more info please to help you, do you have a 1.8 ? 1.6 diesel ? if its a diesel is it turbo or non turbo ? assuming its the original engine, you didn't say what model gti or cl ect. Also if its a 1.8 gas does it have the digi 1 or digi 2 intake system.

  • Anonymous May 11, 2010

    The oil pump is located above the oil pan. remove the oil pan. i believe there are 2 13mm bolts securing oil pump. please, if youy can, let me know the reason for oil pump replacement.

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  • Posted on Mar 22, 2009
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Oil pump is in the oil pan and if you have no or low oil pressure replace pump before doing anything with knock sensor. knock sensor is more or less a microphone and listens for spark knock but will set codes for any knocking or tapping noise which is commonly heard if oil pump is malfunctioning

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