Code P0352, lost power and started to miss and sputter?

CATMONKEE

MEMBER
1999 FORD MUSTANG
3.6L
6 CYL
2WD
AUTOMATIC
10,000 MILES

The car sat in a garage for a year without being driven. When I took it out for the first time it ran fine for about 10 miles and then lost power and started to miss and sputter. I changed the oil; spark plugs and fuel filter and filled it up with fresh gas. It will start up just fine and run fine until it gets up to full operating temperature and then it starts running bad again. Error code P0352.

Thursday, October 26th, 2023 AT 11:19 PM

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
50,363 POSTS

The trouble code P0352 in your 1999 Ford Mustang is related to the ignition coil system, specifically, "Ignition Coil B Primary/Secondary Circuit Malfunction.

I would swap out the ignition coil which can cause this code and make the engine run badly. Check out the images (below). Please let us know if you need anything else to get the problem fixed.

Images (Click to make bigger)

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Friday, October 27th, 2023 AT 8:40 AM

CATMONKEE

MEMBER
2 POSTS

I pulled the coil and tested it with my multimeter, and it tested fine. What I discovered was that the coil electrical connector plug doesn’t lock in place like it should. The locking tab is worn. I zip tied it, so it locks, and the car drives fine. It was working itself loose after running awhile. That explains why it always ran fine at first. Thank you for your help. You certainly pointed me in the right direction.

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Friday, October 27th, 2023 AT 6:57 PM

JACOBANDNICKOLAS

MECHANIC
110,055 POSTS

Hi,

Thank you for the update. We're glad to know you found the issue and were able to repair it.

Take care of yourself and feel free to come back anytime in the future.

Joe / Ken

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Sunday, October 29th, 2023 AT 8:58 PM