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no spark to distributor cap

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Old 10-28-2008, 06:42 PM
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Default no spark to distributor cap

97 jeep Cherokee....wont start....not getting any spark to distributor from coil....already replaced coil and cap and rotor....battery is charged has gas....fuel pump is turning on....it is turning over....

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Old 10-28-2008, 07:03 PM
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Whats the voltage going into the coil?

Electicity 101
If a known voltage (12VDC) is applied to a load (the coil) and the load does not function, then the load is bad.
Old 10-28-2008, 07:07 PM
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Don't remember exact figure, but it was above the the specs in Hayes manual, that's why we replaced the coil.
Old 10-28-2008, 07:26 PM
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Put a spark plug in the coil wire and ground the spark plug. Crank the motor and check for spark.
Old 10-28-2008, 07:27 PM
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Got a Check Engine Light on?
Old 10-28-2008, 08:31 PM
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no, no check engine light. It's too dark to work on for tonite now, I'm gonna take it for diagnostic test tomorrow
Old 10-28-2008, 08:33 PM
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Based on your description and the fact that you've already replace the coil it's probably going to be the Crank Position Sensor.

Bets anyone?
Old 10-29-2008, 06:42 AM
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I second that... especially if it is just sitting there cranking.

Test it

https://www.cherokeeforum.com/showth...7282#post67282
Old 10-29-2008, 08:23 AM
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I vote for the CPS as the culprit!!!
Old 10-29-2008, 12:14 PM
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Thanks everybody! I'm going to look into that today, only thing that stinks is I'm finding them to cost about $100+ so it may take till payday to replace and that doesn't come till Friday. Any suggestions on how to test? Maybe just a continuity test with volt meter? Or is there something else I can do to check it?
Old 10-29-2008, 01:07 PM
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Don't replace it most common get you by easy fix is just unplug it blow it out and plug it back in. Should fire right up.
Old 10-29-2008, 01:40 PM
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Originally Posted by XJ Stryker
Don't replace it most common get you by easy fix is just unplug it blow it out and plug it back in. Should fire right up.
Originally Posted by XJ Stryker
I second that... especially if it is just sitting there cranking.

Test it

https://www.cherokeeforum.com/showth...7282#post67282
Stryker already gave you the test procedure.
Old 10-29-2008, 03:23 PM
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It Worked! Thank You to all for the great info. I replaced the CPS and she starts! Thanks again!!!!
Old 10-29-2008, 03:40 PM
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Old 10-29-2008, 04:39 PM
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forums are great


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