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  1. #1
    p14va's Avatar
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    camshaft position sensor or timing?

    Finally found out what the strange problem was from this thread:

    Strange problem with throttle through rev range??

    checked it up on Vagcom and came back with a fault in the camshaft position sensor.

    00515 - Camshaft Position (Hall) Sensor (G40): Implausible Signal

    Possible Causes

    • Camshaft Timing Out of Specification
    • Wiring to Camshaft Position (Hall) Sensor (G40) faulty
    • Camshaft Position (Hall) Sensor (G40) faulty
    • Engine Control Module faulty
    Possible Solutions

    • Check Camshaft Timing
    • Check Wiring to Camshaft Position (Hall) Sensor (G40)
    • Check/Replace Camshaft Position (Hall) Sensor (G40)
    • Check/Replace Engine Control Module
    Now the cambelt has recently been replaced and it feels like the timing is out as the same thing happened to one of my mates and it felt the same in high revs.

    So would it deffo be the timing or could I still get the same symptoms if the sensor wasnt working?
    thanks.
    - Audi A3 1.6 -

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  3. #2
    HTC
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    Pull out the gearbox bung and turn the engine to TDC lining up the marks on the flywheel and gearbox. Then pull back the top of the timing belt cover look at the timing mark on top of the camshaft sprocket. Is it aligned with the mark on the head?

  4. #3
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    Quote Originally Posted by HTC
    Pull out the gearbox bung and turn the engine to TDC lining up the marks on the flywheel and gearbox. Then pull back the top of the timing belt cover look at the timing mark on top of the camshaft sprocket. Is it aligned with the mark on the head?
    thanks for the reply will check this out.


    ok just looking though the haynes manual for my bros mk4 and it highlights the procedure with pics (woohoo) so I'll check it 2moro.
    Last edited by p14va; 23rd November 2007 at 17:32.
    - Audi A3 1.6 -

  5. #4
    HTC
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    Good luck, let us know how you get on.

    BTW, you'll be able to see more if you remove the airbox.

  6. #5
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    the timing is most likely to be out, especially as the cambelt has been done recently. i had the exact same problem.

    I had my cambelt changed and after a few miles CEL lit up.
    Plugged it into vag-com and came up with camshaft position sensor error.
    Told the garage the timing might be out, he said no its definitely spot on, it was all locked in place when it was done. He ended up changing the camshaft position sensor and crankshaft angle sensor, which did not solve the problem and wasted my money. The guy told me there must be something else wrong the timing is definitely right. The guy that did it is supposedly a specialist!
    I found a proper experienced independent vag specialist, he told me straight away the timing is out and re-did the timing and it has been fine since no CEL etc..

    So i paid for the job twice because of someone who obviously didnt know what he was doing. And also ended up with 2 sensors I didnt even need.

    Take the car back and get them to doubler check the timing!

  7. #6
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    Yep ended up being the timing was out so got it sorted today and drives much better now thanks guys!!
    - Audi A3 1.6 -

  8. #7
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    Quote Originally Posted by p14va
    Yep ended up being the timing was out so got it sorted today and drives much better now thanks guys!!
    wooooo just took it out for a thrash and its really much better!! the engine revs so much more freely and its actualy quite fast lol being a 1.6.
    - Audi A3 1.6 -

  9. #8
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    It amazes me how many muppets out there people pay good money too cannot fit a fappin timing belt! !

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    I am amazed, how can a GARAGE do a duf job on somethign as important as a timing belt?

    I have changed many a belt myself and on some pretty horrendosu set-ups, V6's etc but never ever get the timing wrong.

    Is there somethign difficult about the 1.8T set-up or is it just some lazy ass garages not doing the job properly?

  11. #10
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    To be fair to them, the car was sitting in their yard for about four months after the head was changed with timing belt/water pump so I guess it wasn't really top of their priority list. but your right they should've done it properly when they put it back together.
    After I bought it of them really cheap and got it back on the road, they sorted it out really quickly in about an hour or less no hassle which was good of them!
    - Audi A3 1.6 -

 

 

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