Hello Folks,
I need some help diagnosing a rough engine problem, any input would be very much appreciated.
1997 Ford Mustang, V6, 3.8L
- Car has lost power and engine is running rougher.
- Autozone diagnosed that cylinder 2 wasn't firing.
- Removed #2 spark plug wire from ignition module, held close to
module and no spark.
- Swapped #2 & #6 wires and #2 wire was okay.
- Cleaned and regapped #2 spark plug - didn't fix problem.
- Tested #2 plug by swapping #2 & #6 wires at ignition module and saw
a spark from #2 engine cylinder to #6 ignition module.
- Measured primary & secondary resistance on ignition module and they
were within specificaiton.
Question: what are possible causes of no spark from ignition coil
for cylinder #2 and how can I troubleshoot? Ignition coil pack? Ignition Control Module? Crankshaft sensor?
Note: some friends have told me that it's likely to be the coil pack (sealed module located on the top front of the engine). My hesitation to agree is that the coil resistance checked out okay.
Thanks for your help,
Tony
I need some help diagnosing a rough engine problem, any input would be very much appreciated.
1997 Ford Mustang, V6, 3.8L
- Car has lost power and engine is running rougher.
- Autozone diagnosed that cylinder 2 wasn't firing.
- Removed #2 spark plug wire from ignition module, held close to
module and no spark.
- Swapped #2 & #6 wires and #2 wire was okay.
- Cleaned and regapped #2 spark plug - didn't fix problem.
- Tested #2 plug by swapping #2 & #6 wires at ignition module and saw
a spark from #2 engine cylinder to #6 ignition module.
- Measured primary & secondary resistance on ignition module and they
were within specificaiton.
Question: what are possible causes of no spark from ignition coil
for cylinder #2 and how can I troubleshoot? Ignition coil pack? Ignition Control Module? Crankshaft sensor?
Note: some friends have told me that it's likely to be the coil pack (sealed module located on the top front of the engine). My hesitation to agree is that the coil resistance checked out okay.
Thanks for your help,
Tony