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Dan
Dan, Technician
Category: Ford
Satisfied Customers: 24211
Experience:  Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
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Im blowing coil pack #3 on 99 crown vic

Customer Question

im blowing coil pack #3 on 99 crown vic
Submitted: 1 year ago.
Category: Ford
Expert:  Dan replied 1 year ago.

Hello, my name is***** sounds like your PCM may have failed which can cause coil to short out. Check to see if white/pink wire is shorted to ground. If not with vehicle running check to see if white/pink wire pulses ground signal on/off, if signals stays on then PCM needs to be replaced. If white/pink wire has ground unplug PCM to see if ground drops, if not run new wire betwen coil and PCM. Here is a wiring diagram to help with testing, let me know if you have more questions. Thanks.

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https://www.dropbox.com/s/lnonxegjd55euwr/coilrrs.pdf?dl=0

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Customer: replied 1 year ago.
thank you ill give it a try
Expert:  Dan replied 1 year ago.

No problem, let me know how it goes or if you run into more questions. Thanks.