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  1. #1

    Default check engine light

    my 1997 suburban has a code p0300,p0151,p0131 .i need help how to fix the problem .

  2. #2


    All three codes could have a single cause. I'd probably start by investigating why the O2 sensors are reporting lean. "By the book" one usually starts diagnosing O2 sensor codes by checking the fuel pressure to make sure the fuel system is running right. Look for any significant vacuum leaks. I might pull the spark plugs to see if they indicate whether the engine is running lean or rich.
    '98 K1500 Suburban LS 5.7 L 4L60E NV246 ARB
    '92 Ford Explorer XLT 4x4 4.0 L A4LD BW13-54 Trac-loc rear
    "My toys were the greasy cogs and springs and pistons that lay around all over the place, and these, I can promise you, were far more fun to play with than most of the plastic rubbish children are given nowadays." Danny in Roald Dahl's Danny The Champion of the World

  3. #3

    Talking check engine light

    i will start with the O2 sensors thanks for the tip. will keep you posted
    thanks MrShorty

  4. #4


    mrShorty ,i found a exhaust leak, i fix it and the check engine light has not come on.

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