Hey guys, I have related problems on here, but I want to start a new thread to ask about my coil pack problems.
My car is a 2000 S40 Turbo (180,000 + miles). I have had a number of problems and I am trying to work them all down. I think I have a combo of a few going at the same time.
I hade a computer throw codes P0351(Coil A Primary-Secondary Circuit Mal.) and P0300B (Randon Misfire Mult.). ...Other codes are P0341, P0101, and P0335B
What are the number of the cylinders? Does 1-2-3-4 start from the timing gears? If so, My coil 1 and 4 are bad with no fire. They are also connected by a cord.
Two of them (3 and 4) look like coil packs, but (1 and 2) look like regular plug boots , yet both connect to the other 3 and 4??
Can someone give me the school lesson on coil packs and this type placement??
Other things done:
Changed Cat. Converter
Crankshaft Pos. Sensor
Cleaned throttle body
New plugs
Cleaned MAF with MAF cleaner
Checked for vaccum leaks

 

You have only 2 coil one for 1-4 and one for 2-3.Should replace both coil still.The #1 cylinder is at the belt.What kinda plug did you install and whats the gap on them?

 

Thanks for the responce.

Im new to the mechanic end of Volvos, and when I had the guy at the parts store say "It has three coils"...I thought I was missing something.
Two coils is what I thought I was looking at, so thanks. I used NGK plugs and gapped them at 30-32 gap.

 

If the plugs are iridum ones the gap is ok but if they are platinums you should regap them to 0.025-0.028.Take care of the coils then clear the codes see what else if any will trow you codes.