Posted this in another area, starting to think this would have been my best choice to post it in in the first place.

Trying to figure out what is likely the cause of it. We believe it could be a number of things: wet distributor cap, wet spark plugs, possibly the coil pack getting moisture in it, or the air intake.

It doesn't always happen when it is raining, sometimes it can be going through a large puddle, it won't typically doing it if it's just sprinkling outside.

We unplugged the wire that went from the coil pack to the distributor cap, and got the same result as though it had gotten wet, could be a correlation.
It's a '91 740 non turbo. Any advice would help, please.


Also, if anyone would just so happen to know what company makes this coil pack (bosch, ngk, etc.) that would also help, because the guy at o'riley's said that the wires for my spark plugs and the coil pack need to be from the same company

 

maybe the O'reilly guy is thinking of the wire end connections.....as you have a specific system.

You have the Regina Bendix system....

Junk yard part or

fcpeuro.com: ignition coil $149.95 free shipping I think. Wires: $ 32.95 set EAST COAST
ipdusa.com: ignition coil $ 137.12 Wires: $ 50.48 set OREGON


you have an intake air temp sensor...light blue connector....if it is somewhere on the plastic tube to the intake manifold and you got slits on the tube then maybe moister is screwing with it...? don't know but just brainstorming here....