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ignition problems


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i have a 1998 grand cherokee with a 5.2l and yesterday it just died when i was doing 70 on the freeway. its not getting spark does anyone have any ideas i have been trying all day fuse is good switched relays ran a jumper wire from batterie to it and still have no spark bad coil?

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CPS is what tells the computer when the pistons are in the right place so it can fire the spark. You can't bypass it, you can't hook it up to a switch. Yes, it can die in the middle of the road like that.

 

Doesn't mean that's what it is, but it could be.

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  • 2 weeks later...
CPS

\

 

x2 crank sensor spray the inspection hole with carb or brake cleaner it will blow the oil off of it and it will run again.

 

Crank sensor in a 98 5.2 is a hall effect sensor. would work if submerged in oil. It is also possibly the worst sensor to get at I have ever seen.

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