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  #1  
Old 03-16-2016, 10:36 PM
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'93 Cuts Off While Driving

Hey all!

As the title states my friends '93 Jeep Grand Cherokee Laredo with an inline 6 engine shuts off while he's driving. We have no idea what causes it but I have noticed it shuts off when he goes a little over 2,000 rpm's.

But get this! If he pushes it, it'll go up to 90mph but when he lets up on the gas it'll cut off. Does anyone know what this could be?

We've tried using the computer reader but his Jeep won't talk to any of the three we've used or the mechanics.

If anyone needs anymore info I'll be more than happy to provide it. Thank you all for reading!

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  #2  
Old 03-17-2016, 09:08 AM
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Re: '93 Cuts Off While Driving

Welcome to the garage.
Have a look at the wire bundle where it runs between cylinder head and fire wall. The bundle can shave on a stud and when the isolation is gone, cause a short. Due to the movement of the engine while accelerating (or decelerating), it can short out.
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Old 03-17-2016, 10:24 AM
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Re: '93 Cuts Off While Driving

I'm not very savvy with this, and I apologize for it, but is there any way you can describe it better? What cylinder and what's a fire wall? Thank you for your patience. I appreciate it!
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Old 03-17-2016, 11:26 AM
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Re: '93 Cuts Off While Driving

Just on the aft side of the cylinder head when you are standing in front of the engine. Firewall is the bulkhead in between the engine compartment and the passenger compartment.
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