Question about 2002 Jeep Grand Cherokee

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2002 jeep grand cherokee with 4.0 engine will die but restart

2002 jeep grand cherokee with 4.0 engine will ride rough then bog down and eventually die. After the jeep starts asily and runs well for a little while. Error codes 340, 1391, 351 come on. help please.

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  • Wayne Holden May 11, 2010

    Do you mean runs rough (not rough ride) then bogs down (loses power) and then dies?

    How long does it run well after it dies and you restart it and how long in between dieing and starting?

  • yadayada
    yadayada May 11, 2010

    wat does the rough ride hve to do with this problem?

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P0340 is the cam shaft sensor, this will cause it to cut off while driving, hardtime starting, p0351 is the ignition coil A primary/secondary curcuit mal function. p1391 is ignition system misfire, this could be plugs, wires, or coils. first of all have the cam sensor changed and it may correct the rest of the codes. when fixed turn light off with obd2 scanner. if you do not have one, then any auto parts store will erase the codes fo free of charge.

Posted on Jan 21, 2010

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I do not know what the error codes mean but know that When I has the sme problem with my jeep it was the fuel pump. What happens is when it heats up it es less and less fuel and chokes the engine. When cold it runs better. remember gas in the tank helps cool the pump but sounds like your pump needs replacing as it is starting to give out.

Posted on May 19, 2009

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