stherngent

iTrader: (7)

The car hesitates and stumbles when trying to accelerate, it doesn't do it all the time but when it does do it the wb goes crazy lean like 18-20. I was at the track when it did it today, I but some 112 octane in it just a couple of gallons and it seemed to help. It didn't stumble anymore but still hesitated a little bit. Any ideas, bad gas maybe?

stherngent

iTrader: (7)

Now it only hesitates when accelerateing from a stop when you punch it and my fuel gauge just started acting crazy. it normaly sits at 69psi but now it will drop to 65psi and just a min it ago when I stopped put it in park it was fluxuating from 65-80psi?

Blue92coupe

iTrader: (1)

Same problem I am having now. runs fine until I make a few pulls then idles rough goes 20 or so on afr and wont hardly even accelerate from a stop light. Then it may clear up for a bit then go back to hesitating. Checked all grounds, now on to O2's and fuel system? any ideas? Thanks

Old Geezer

iTrader: (3)

Ideas??
Yep. data logging. w/o it, U R guessing, spending $ on uneeded parts, etc.