Question about Oldsmobile Custom Cruiser

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Its A 1991 Olds Custom Cruser With A 350 Ive Changed Pick up Coil & Modual tp Senser Coolant temp Senser dis Modual map Senser pulled egr and plugged set timing 2 deg before 0 the stock setting The Car Pings At Low Load And Severly Pings under heavy load ???

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  • Eric Klimek Mar 04, 2009

    yes

  • Eric Klimek Mar 05, 2009

    It Seems To Get Worse As The Car Gets warm But not All The Time. Then the Car warm's Up To Full Temp And Not Make The Codition then it happens .like a wire goes disconnect in the engine harrnis sumthing with the timing goes wacky .the thing will throw a code for the dis modual under heavy throttle

  • Eric Klimek Mar 05, 2009

    Stock Crate 350 Freshed Up Had Verry Low Mile's On It Clean As A Wistle stock > I will Try The Plug Thanks

  • Clint Smock
    Clint Smock May 11, 2010

    The last time you posted this I didn't have this much information. Sorry

  • Clint Smock
    Clint Smock May 11, 2010

    Sorry, just for verification, This is 1991 Olds Full-Size Wagon? With a 5.7 liter. Chevrolet? With TBI?

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  • Master
  • 4,669 Answers

How long has it had this spark knock? Did it come on suddenly or slowly worsen over a period of time?

Posted on Mar 04, 2009

  • Clint Smock
    Clint Smock Mar 05, 2009

    It likely throws code 43. Likely the ecm is trying to ****** the timing to get rid of the knock. Have you tried driving it with the timing connector unplugged? This will put in back-up spark and fuel. Try this and see what happens. Let me know what it makes the car do. Also, have you done any modifications to the engine? Like raise the compression ratio?

  • Clint Smock
    Clint Smock Mar 05, 2009

    Just trying to help, let me know. Hey by the way, can you do anything about that Inappropriate rating you gave me a week ago, please.

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