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Thread: TD5 Fuel pressure problem?

  1. 3rd November 2011, 01:04 PM #11
    nobbyclrk's Avatar
    nobbyclrk
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    I assume the mechanic checked the pressure as he plugged the car into his "Test Book" tablet
    That type of arm chair diagnostics makes me cringe. Especially when it's someone else's dollars.

    It may have had low or no fuel pressure but it didn't check the relay, wiring, ground and fuse to the pump.
    Or an oily poor connection at the PCM to ground the relay.

    Let's just hope he did more that you didn't see and I'm just getting on my soap box for nothing.
    But it is looking odd.

    Andy.
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  2. 6th November 2011, 07:08 AM #12
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    mturri
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    Quote Originally Posted by Terrain Vehicles View Post
    I assume the mechanic plugged the car in to a suitable computer to get a fuel pressure reading?
    Regrettably the Td5 engine does not feature a fuel pressure sensor... wish it did!

    Rgds
    Matt
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  3. 6th November 2011, 07:19 AM #13
    Gnocchi
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    It's fixed!

    I took the car back to the mechanic yesterday and he did tests on the pump which was working fine. Then he moved to the boost modulator valve (located just behind the intack manifold) as test book was showing low boost codes. Once it was replaced everything was running fine again. So it seems the pump failed along with the boost modulator valve (strange coincidence) or the shorted pump damaged it. I now know the symtoms and how to replace both so I guess I got something for the money (I have to look at it that way or else the hole in my bank account hurts too much).
    Thanks for all the tips, I know with a discovery it wont be long before I'm looking for the next fix.
    Cheers.
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  4. 7th November 2011, 09:21 PM #14
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    nobbyclrk
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    So it seems the pump failed along with the boost modulator valve (strange coincidence) or the shorted pump damaged it.


    Mmmmm... You know what I think.

    Anyway good to hear it's fixed.
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  5. 7th November 2011, 10:11 PM #15
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    Terrain Vehicles
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    Quote Originally Posted by mturri View Post
    Regrettably the Td5 engine does not feature a fuel pressure sensor... wish it did!

    Rgds
    Matt
    Good point! Just as well I only sell parts and I'm not a mechanic!
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