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Thread: engine 'pinging'when accellerating

  1. 15th April 2008, 07:35 PM #1
    p38isgreat Guest

    engine 'pinging'when accellerating

    Hello.I have a 2000-2001 4.0L SE P38 Rangie.When accellerating,there is a pinging sound from the engine,sounding as if my car is a diesel.Also,my car looses power and i must drop back so as it can 'catch' up.Have put higher octane fuel,but to no avail.By the way,the car starts with no prob's and no sparking from the ignition leads....Any ideas?
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  2. 15th April 2008, 07:37 PM #2
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    rovercare
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    Cactus knock sensors
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  3. 15th April 2008, 09:26 PM #3
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    Disco300Tdi
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    The datrastat is possibly breaking down..
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  4. 15th April 2008, 11:24 PM #4
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    Have it checked at a dealers they should run Diagnostics on it for you for nothing
    Then it takes the guess work out of it
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  5. 16th April 2008, 09:14 AM #5
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    Quote Originally Posted by Ken View Post
    Have it checked at a dealers they should run Diagnostics on it for you for nothing
    Pffft,
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  6. 16th April 2008, 06:37 PM #6
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    Quote Originally Posted by rovercare View Post
    Cactus knock sensors
    Knock sensors mine must be gone aswell
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  7. 16th April 2008, 06:41 PM #7
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    Quote Originally Posted by Ken View Post
    Have it checked at a dealers they should run Diagnostics on it for you for nothing
    Then it takes the guess work out of it
    If you were nearby, I could run my diagnostic gear on it for free.
    Ron B.
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    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



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  8. 16th April 2008, 09:05 PM #8
    tempestv8
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    When my V8 was pinging, it was due to the O2 sensors in the exhaust system. One of them was horribly out of range, so the engine ECU was having a difficult time because one bank would be saying its very lean whilst the other bank would say it was very rich.

    So the ECU has to default to enrichening the fuel mixture of the lean bank to save the engine, and that only caused the other bank to get even richer.

    But I'm not 100% sure whether the P38A throughout its entire model life has O2 sensors in the exhaust or not.

    As someone said, get the Testbook connected to your computer and check the logs for problems or look at the live readings when the engine is running. You'll work out pretty quickly what's not within normal working range.
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  9. 16th April 2008, 09:14 PM #9
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    Quote Originally Posted by rovercare View Post
    Pffft,
    Ye of little faith

    I took mine in the other day similar symptoms they hooked it up (Testbook)drove it spent at least 20 mins checking it over didnt charge me a cent

    But now its a Rovertech

    As I wasnt going to pay Dealer prices for repairs

    Sorry to hijack the thread
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  10. 16th April 2008, 09:43 PM #10
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    Quote Originally Posted by tempestv8 View Post
    But I'm not 100% sure whether the P38A throughout its entire model life has O2 sensors in the exhaust or not.
    The early ones in Australia didn't. I don't know when they were implemented but I assume from the Thor engine onward.
    Ron B.
    VK2OTC

    2003 L322 Range Rover Vogue 4.4 V8 Auto
    2007 Yamaha XJR1300
    Previous: 1983, 1986 RRC; 1995, 1996 P38A; 1995 Disco1; 1984 V8 County 110; Series IIA



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