Question about 1994 Jeep Grand Cherokee

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Blowing ignition control 30amp fuse

Cranks over, blows fuse, then no fire

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Check for a shorted ignition module.there is a power transistor in that module,that if shorted will do it.
number one cause of module failure is dried out heat sink grease.
it is a special compound,and you MUST use it if you replace the module.it dissipates heat from the module to the mounting surface
as well as fills in surface irregularities for a better contact

Posted on May 15, 2009

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Posted on Jan 02, 2017

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Hello
Disconnect the fuel pump
then see if you still blow the 30 amp fuse many times when the fuel pump goes bad this will blow the 30 amp pdc fuse
RD

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