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Coil Pack resistance

Tiny
JULIANR
  • MEMBER
  • 1995 FORD FIVE HUNDRED
  • 120,000 MILES
I have a 1995 mustang v6 3.8 liter. My question is about the ignition coil packs resistance. The primary readings are within range. According to the manual, the secondary test reading should be between 6000 to 11500, the readings I got were between 12000-13000. Does it effect the performance of the car and how? Is the difference too significant to keep it running? Or should I replace the coil packs? Thanks in advance.
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Monday, September 3rd, 2012 AT 1:33 AM

3 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
First, why are you checking? Is there an issue if so, what is the problem?

Roy
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Monday, September 3rd, 2012 AT 3:05 AM
Tiny
JULIANR
  • MEMBER
  • 2 POSTS
It starts it just seems weak and hesitates. No I havent used a scan tool. Im just tinkering around, its mostly just trying to learn the electical side and since I dont have all the tools for other tests I thought id start wtih the ignition system. Is it true that if a coil with increased resistance can result a weak spark?
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Monday, September 3rd, 2012 AT 6:41 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Thats correct.

I would start with a fuel pressure test to verify the pressure.

Roy
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Monday, September 3rd, 2012 AT 2:09 PM

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