[s-cars] Coil Packs and POS/PSO

[CaptMagu at aol.com]

s-heads

We seem to have some coil pack issues and I thought I would share my findings 
on CPs and PSOs. These 2 electronic items have been a source of frustration 
to our community for years. Here are some things I've noticed. First, if the 
miss is boost or heat(engine has to be warm) related, then the problem is 
typically a coil pack. If the miss is more or less constant, then its a PSO.

On my recent anniversary trip to Telluride, I had a coil pack issue on the 
way home. My car would start missing at exactly 10 psi of boost. I figured it 
was a CP and sure enough it was. When I got home that night and after the engine 
had a chance to cool off, I pulled the CP cover. There it was. The #4 CP had 
a glob of black ooze next to it that had hardened. I swapped it with a spare 
and presto, problem solved. All these CPs were replaced with new right before I 
left for the ACNA Nationals last November and had less than 6000 miles on 
them. Go figure. Good night from Evahboost.

Hap, dealin with dahkine electro gremlins in Evahboost, Maguire