Skip the auto shop - Our mechanics make house calls

Q: I have a coil issue.

asked by on

I have a 2003 Ford Crown Victoria with the Coil on plugs system. A computer readout determined the #3 coil was bad. I replaced it and within 1 minute of starting the car, the car shut off and the new coil burnt up. The associated fuse was also blown. I examined the components and noticed that the wiring that runs into the coil plug was exposed on the hot and ground and was taped together with no separation. The wires weren't in direct contact with each, but must have been close enough to arc and burn up the new coil. I insulated the wires separately with electrical wire and plugged the old coil back in. The car started up and I drove it down the road, but when I pressed the accelerator, the fuse blew again. It hadn't done that with the old, faulty coil before. So, what could be the issue? I don't want to put another new coil in there and have it burn up until I figure it out. Could the spark plug have gone bad when the new coil burnt up? And could that be causing the fuse to blow?

My car has 84000 miles.
My car has an automatic transmission.

There is some sort of short in your ignition circuit on the number three cylinder. I would recommend further inspecting the wiring that controls the number three coil. It is likely that more wiring damage exists that may have been looked over. Once the short is found you should be able to resolve the issue by insulating the wires separately and preventing them from coming in contact with each other any more. If you are in doubt about this repair, consider YourMechanic for a check engine light is on inspection to determine why the fuse keeps blowing.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Gauge cluster pops on and off

Hi there. If the entire cluster doesn't function intermittently, the cause may be an internal short. The problem could also be caused by a poor ground, bad connection, or damaged wiring. The previously installed police equipment may have had something...

Q: My car is skipping - do I need new spark plug wires?

Old or faulty spark plug wires can definitely be a cause for the engine to misfire, however there are numerous other reasons that may also cause this to happen. Generally, misfires are caused by either a spark or fuel issue...

Q: My car has been shutting down randomly.

This could be a variety of potential issues related to lack of fuel delivery or spark. The tendency to shut down randomly and then start up again after sitting for a bit suggests potentially faulty coil packs which are known...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...