Question about 2003 Jeep Grand Cherokee

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2003 jeep cherokee laredo still sputters and dies!

I have posted several issues with my 2003 jeep cherokee laredo on here and still 3 mechanics and still are stumped on this one, last mechanic checked all wiring and cleaned everything, new crank sensor, new filters in fuel pump (?) and a new fuel filter he does not seem to think that it is the PCM itself but can not locate the problem. Drove great for like 45 min and then when pulling back in to shop it dies. I am stumped and not sure what else to do or advise them to do.

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  • connelt Jul 28, 2009

    everything the whole thing just like loses all communication but then it will start right back up! Not sure that anyone has checked the fuel rail pressure but will mention this to the mechanic where it is right now.

  • connelt Jul 28, 2009

    why would a bad ignition switch do this when it sputters and drops rpm and speed it seems after it has warmed up and then after driving a while it starts dying loosing all power? Just trying get a handle on what all these parts control here so my mechanic doesn't look at me weird, beings I am a woman and he wants my car in a ditch...lol

  • Richard Scordino May 11, 2010

    Also; a bad ignition switch can do the same thing.

  • Richard Scordino May 11, 2010

    When it dies, what is missing, fuel or spark? You mentioned fuel filters...has anyone checked fuel rail pressure (when it's not starting).

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  • Jeep Master
  • 6,982 Answers

It could do that with a bad switch if it was making poor contact before it disconnects, but that really sounds a lot like the fuel pump is going bad...they overheat and start to bind up, then stop...once cooled down they work just fine till it again gets hot enough to do the same thing all over again. I really hate doing this online because in real life, I'd be doing tons of testing instead of making "educated guesses"

Posted on Jul 28, 2009

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