icedragon642

Ok guys, I got a dead miss can't figure out whats causin it. My check engine light is not coming on and I know for sure it works. It's driving me nuts trying to figure it out. Any ideas would be appriciated!!!
Thanks
Ron
93 Pontiac Trans Am T-Topped and a 6-speed LT1

RamAir95TA

iTrader: (2)

Specify the problem. Is it at idle, load, part throttle, wide open, etc.? Fuel pressure okay? Wires arcing, plugs okay?

icedragon642

It misses at normal load, if I run wide open it doesn't miss. Fuel pressure is ok plugs are new ( I tried changing plugs first thing same with wires ). I'm stumped, so any ideas are truely appriciated!!!

DisasterFormula

iTrader: (1)

Try running some Seafoam. Maybe a clogged injector?

joelster

If it misses at idle and it is ignition related, try hooking up an old school timing light. Simply start the car and depress the timing trigger and go from wire to wire. It should strobe on every wire. If it doesn't on 1 particular cylinder try replacing that wire. Some guys use one of those infrared temperature guns too and shoot each header tube. If you find one significantly colder then it isn't firing properly.

icedragon642

Thanks guys!! I'll give your ideas a try.

SS RRR

iTrader: (2)

Or you can just simply disconnect each fuel injector clip, see if idle changes, if not then plug it back in and move on to the next one. Repeat until you pull one of the clips and the idle does not change. That will be your dead cylinder.

Jason94z

iTrader: (3)

i suspect bad plug or wire if you are getting no SES codes
Pull plugs to see which one is weird/fouled
or idle from cold and sprinkle each header tube with water - the one that does'nt sizzle is your problem and take it from there pulling that plug

Good luck!