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Old 12-15-2013, 02:13 PM
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93 grand Cherokee stalling while driving

I can drive it for about 15-20 minutes then it just dies. I've replaced the ecm and still is not working right. Is there anything else that could be causing that problem?
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Old 12-15-2013, 03:18 PM
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Re: 93 grand Cherokee stalling while driving

Assuming you have good wires and plugs, I'd check the fuel pressure. You likely are due a fuel pump.
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Old 12-15-2013, 03:22 PM
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I have new plugs and wires. I will check the fuel pump. Thank you
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Old 12-15-2013, 03:33 PM
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Re: 93 grand Cherokee stalling while driving

Crank and cam sensors are known to give problems when getting old.
I would first get a scan of the PCM to see if there are any fault codes stored.
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Old 12-16-2013, 02:53 PM
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Re: 93 grand Cherokee stalling while driving

Quote:
Originally Posted by Frango100 View Post
Crank and cam sensors are known to give problems when getting old.
I would first get a scan of the PCM to see if there are any fault codes stored.
Agreed, although a condition considered "normal" wouldn't be stored in the
OBD-I system

The fuel pressure sensor and the regulator are also suspects.

Depending on the physical condition, could be something weird like the transmission park lockout sensor. Or, if there is an aftermarket ignition disable start with that--many were crap.

If you can get it to fail, a factory service manual and voltmeter, plus a few jumpers while it is in fail condition can help narrow it down a lot. I had to go so far as to take an extra relay and remove the innards and create jumper points to finally prove to a dealer that yes, the !@!#!@ ignition switch can and does fail [particularly if helped by a junk aftermarket security system that caused heat corrosion]
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