dannyz

About 6 weeks ago, I installed set of coated pacesetter headers, their ory, along with rear 02 sims and extended 02's for the front.
At that time I reinstalled the stock plat. plugs as I knew the car would be running rich for a time while the computor adjusted the afr due to the headers.
So last friday, some 500 miles since the header install, I put in a fresh set of tr6's, at .035 gap.
First day every was ok, then yesterday, driving to work the cr stumbles a bit and the ses light comes on, and it went downhill from there.
The car runs like ***, stumbles, coughs chokes, idles from 550 to 800 rpm, converter wont lock, etc.
Took it to the garage and they plugged her in.
Showed random multiple missfires.
I am thinking the colder plugs, along with running rich screwed up my 02 sensors, fouled the plugs, or a combintion of both.
What do you guys think?
Thanks for any help guys.

kistlerjm9

iTrader: (24)

wires are arcing off the headers would bet money on it.

planemech2

My #6 plug wire was just barely on the plug. I got the random misfire code and an audible miss. Made sure it was locked on tight and problem went away.

BAT TA

iTrader: (15)

Mine did that once, it turned out to be a cracked plug.

dannyz

Thanks for the help guy's, but it was the plugs.
Put the stockers back in, runs fine.
Weird.