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Toledo V5 170BHP cam sensor / chain stretch

Discussion in 'Toledo' started by Dox1966, Feb 12, 2011.

  1. Dox1966

    Dox1966 Active Member

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    Hi, I've just bought a V5 170 BHP on a Y plate with the engine management light on the dash, I've scanned it with an Autel MS509 and got the following-

    P0340 camshaft position sensor A circuit bank 1 or single sensor

    I googled "V5 VW P0340" and read a tale of woe about stretched chains being the culprit rather than a simple sensor swap out.

    I've not done anything with it yet but want to ask how common this problem is?

    Symptoms are, needs the accelerator pressed to start, idles poorly, fumey smells and petrol smells, once off idle and at light throttle the car runs well and drives smoothly.

    Any help appreciated:D
     
  2. Slimy

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    Having to press the accelerator to start the car isn't uncommon for the V5, there are a few people (including me) that has it on an otherwise working car. Although your symptoms do seem to match what can happen with a faulty sensor.

    I have heard of a few cars with stretched chains, mainly because of poor service intervals. If the car has been maintained, the chain should last for a long time. SEAT don't even quote a replacement time, they simply say 'inspect at 125k'. The sensor doesn't seem overly expensive, is it worth trying a replacement?
     
  3. Dox1966

    Dox1966 Active Member

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    The car has done 140K and no history, it drives well apart from idle and the light on.

    Is there an engine diagram anywhere, Haynes doesn't cover either of the V5 engines, I previously owned a V5 10V Golf estate, good engines and drive well IMO.

    The 20Vs have variable timing pulleys too - another possible problem

    I should have stuck with my 10V:cry:
     
  4. Slimy

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    Erm, no they don't, not as far as I'm aware. There is a variable length inlet tract, but I believe the 10 valve also had that. I'm 99% sure VAG never went for variable valve timing in any of their engines.

    Trry vagcat for some views of the engine, or go for elsawin. Unfortunately vagcat is down yet again, so give it a day or so to turn up again.
     
  5. Dox1966

    Dox1966 Active Member

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    Theres a car for sale on scottishvag thats just had a chain set and now needs cam sprockets

    scottishvag - members motors - V5 broken (ricco is the the thread starter 2 pages back), the above pic is copied off there

    20 and 21 in the pic

    I've not made enough posts to link to my photobucket account:cry:
     
  6. Slimy

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    Interesting! I'll have to look more into that, I wonder how it's controlled.

    Thanks for the link, a picture paints a thousand words.
     
  7. Dox1966

    Dox1966 Active Member

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    Perhaps you could copy and paste the pic here for others to see, I have the pic in photobucket, but need 15 posts before I can link it.

    :)

    The 2 cylindrical items below the cams are the gubbins and I think they use oil pressure for activation?



    i22.photobucket.com/albums/b301/penny318dog/v5variators.png



    above is 2 halves of the link to my PB account, just join them for the pic:)


    The mods will :ban: me now:cry:
     
    #7 Dox1966, Feb 13, 2011
    Last edited: Feb 13, 2011
  8. Slimy

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    Yeah, I found out from Elsawin that it is oil pressure controlled by a pair of solenoids. I've had a look at the relevant pages, it describes how they work and also the test method using vagcom. You can get the angle of each camshaft as a value from basic measuring blocks, so you can see it working or not.
     
  9. Dox1966

    Dox1966 Active Member

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    I've taken the cam sensors off today, ones original, the other a new copy part. I swapped them front to back, cleared the code and the fault code remains the same after a test drive.

    Scanned with vagcom;

    17748 - Crankshaft-/Camshaft Pos. Signals Out of Sequence
    35-00 - -

    I still can't link to vagcom dtc etc

    Code reader was;

    P0340 camshaft position sensor A circuit bank 1 or single sensor

    I'm now trying to locate the crank sensor, not a lot of room to view in there.......
     

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