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  1. #1

    Default another question for my friends truck

    ok as you probably know my friend has a 2004 gmc sierra with the 4.3l v6 now it has hit 100+ degrees out side and you have to use the air conditioning alot now. we havee to use the air conditioning for an extended time, his truck will stall he took it to a mechanic and They said that it is because of dust and stuff since we live in a desert. im thinking it is just an air filter, but the mechanic should have know that. so now im looking for your opinions. idk what the stuff is though??

  2. #2

    Default

    also it dies both at idle and at highway speeds.

  3. #3

    Default

    Not enough to go on. A few things I'd look at next:

    1) Fuel pump cutting out or losing power/ground?
    2) Any codes in the computer (pending or otherwise)? sometimes that will give ideas.
    3) When it stalls, is it sputtering/stumbling and then stalling, or is it more like someone turned the key off?
    4) Will it start right back up? If not, some of things may be easier to check after it stalls.
    '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

  4. #4

    Default

    i haven't had a chance to look at it, i know that it starts right back up

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