Question about 1993 Jeep Grand Cherokee

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I have a 97 Jeep Grand Cherokee and sometimes when

I have a 97 Jeep Grand Cherokee with 119,890 miles and sometimes when I come off the gas or come to a stop sign/stop light, it cuts off on me no matter the weather. Most times it starts back up after a few tries. A few times it took about ten minutes of waiting before it would crank. The battery and starter are new, tune up was done recently and throttle body assembly was checked. The mechanics at a popular auto care center have no clue and say they can only diagnose the problem if it happens in the stall, but it happens "randomly." They have driven it and see what the problem is. They tell me that it could be one of a hundred different issues and they could start guessing and replacing parts, but that will get expensive (like I didn't know that). HELP!!

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Thundergod is correct in saying to check the CPS
(Crank Shaft Postion Senor) and also the fuel pump,
since it contains the fuel pressure regulator also.
This unit could be worn due to milage and may
need replacing, replace the fuel filter with a new
one if you haven't already.

Next, remove the lower portion of the block off
plate attached to the bell housing to check for
coolant leak due to corroded freeze plug. You
may be asking why? Well, because if there is
a leak and the coolant migrates it's way into
the bell housing it could possibly be picked
up by the flex plate or fly wheel and thus
sling coolant in a circular fashion all over the
inside of the bell housing and coating the
(CSP), which is a Hal Effect device.

This would effectively interfere with the
timing of the vehicle and cause stalling
or shutting down intermittently. Lastly
check the screws that bolt the torque
converter to the flex plate, ocassionly
these can back out and slowy grind
away at the block off plate sending
metal shavings everywhere, and you
guessed it covering the (CSP) which
is magnetic! Again timing is
greatly affected, loud backfires,
stalling, etc...I know from experience!

Posted on Aug 03, 2009

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Hey bud i have a 1994 jgc and it sounds like the problem i had with mine and it turned out to be the csp sensor(crank shaft position sensor)its not an easy thing to replace but you can do it your self the only problem is the location of the sensor and the sesor costs 60-70 bucks,looking at the jeep head on the sensor is on the right side of the motor on the very back and about half way up the socket size is 11mm and youll need at least a 12 inch extention and a piviting socket holder,not sure of the exact name took me about 30 min to replace but havent had a problem since.or it could be something small like spark plug wiresor sparkplugs r bad but since you had a tune up i dont think thatd be it just from my exp. with my jeep i can say 80% thats your problem ig not you can always take the part back and try something else happy trails man any questions hit me email amd.godfather@yahoo.com

Posted on Oct 02, 2009

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Try changing the engine coil pack, my 1993 jeep grand cherokee was hesitating , pulling then stalled, I could turn the key to rotate but it wouldnt start, we changed the coil pack got one from the bone yard cheap started right up!!!!!!!!!!!!!

Posted on Aug 03, 2009

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  • Jeep Master
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Can't do better than what the shop told you...If you want two best guesses, check crank position sensor and fuel pump. Both are quick and easy to check in no-start.

Posted on Jul 30, 2009

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