no spark?
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Member
Joined: Feb 2011
Posts: 166
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From: Philadelphia
Year: 97
Model: Cherokee
Engine: 4.0
no spark?
fired her up this morning no problem came out ten minuts later and not running..crank and crank ..nothing ..starting either.. nothing..checked for spark and getting it from coil only ...dont know need help
CF Veteran
Joined: Nov 2010
Posts: 5,841
Likes: 117
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
#1 cause of no spark at the spark plug is a failed crankshaft position sensor. They can be tested but testing is not always conclusive. If you buy one, buy a genuine Mopar as aftermarket crank sensors are "hit and miss" with a lot of miss.]
The coil itself can be tested for both primary and secondary resistance values with a meter and a manual.
Start there.....
The coil itself can be tested for both primary and secondary resistance values with a meter and a manual.
Start there.....
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