J

johnny2bags

New Member

• Jan 19, 2014

• #1

Hey guys I'm new here and hope you can help. My 01 p38 just took a dive. The coil pack controlling #1 cylinder is failing to fire #1 only. Cylinders 2-8 are excellent. Can someone help?

 

masonsjeep

Member

• Jan 19, 2014

• #2

There are 2 coil packs located at the rear of the engine. Easy enough job to change if you have small hands.

 

J

johnny2bags

New Member

• Jan 19, 2014

• #3

Thanks for the reply masonsjeep. The problem that confuses me is that it's only affecting #1. I tested the wire and it's fine, I attatched #7 wire to #1 on the coil and it didn't fire. It's definately the coild, but that's what's confusing. Can a bad coil have an affect on only one of the cylinders it supplys power to. My thought was if the pack goes out, it would affect all cylinders, 2-8 produce an excellent spark. Thoughts?

 

masonsjeep

Member

• Jan 19, 2014

• #4

No, it can and usually does only affect 1 or 2 of the cylinders. when you change it just make sure you get the leads back on in the correct order.

 

martynv8

Well-Known Member

• Jan 19, 2014

• #5

I thought a coil pack failing would always result in 2 cylinders down as it fires 2 cylinders at a time?

 

J

johnny2bags

New Member

• Jan 19, 2014

• #6

Thanks masonsjeep.

 

S

stopover

Active Member

• Jan 21, 2014

• #7

Spark Plug?

 

Saint.V8

Dyed-in-the-wool 100% RR Junkie

Full Member

• Jan 21, 2014

• #8

They do operate on the 'Wasted Spark' principle as Martyn says...it fires two cylinders at a time!