zell7007

Ok so i did the throttle body bypass the other day on my 96 T/A. and i started to drive it, and tryed to get into it but when it gets to 3.9-5 rpm it spits really bad. it happened right after the bypass and the intake silencer delete? Iv been driving it 4 days like it now and dont want to **** anything up can anyone give me an idea why this is happening?

ss.slp.ls1

iTrader: (36)

What did you use to block off the silencer? Does the car idle high?
I would suspect a vacuum leak.

zell7007

i used a ax shower gel cap... it fit in really tight. and also when i did the bypass and silencer delete my check engine light went off for like 20 mins then came back on??? its been on since i got the car in december and that was the first time it went off

zell7007

can anyone explain why this is all happening?

ss.slp.ls1

iTrader: (36)

It's because you don't have a 4th K&N sticker on your radiator shroud...

Nah, jk, is the car idling high? If it happened immidiately after you did the TB bypass and silencer delete, I would try to put the silencer back on and see if it helps any.

zell7007

na it idles fine... il try the silencer. thanks

2001AntiVenom

iTrader: (84)

could be opti thats what mine did. did u get any coolant on the opti?

myltwon

iTrader: (1)

possibly a wet opti from dumping coolant during the bypass mod

zell7007

i did spill some antifreez but if it was the opti wouldnt it run bad in general? it does fine till 4g

FrawG

I'm having this same problem. What ended up being your problem?

LT1FirebirdSLP

iTrader: (2)

Check for codes. I'm betting 10 to 1 its your Opti. I had a smiliar problem where it ran like a dream til about 4K then it would misfire and run like a bag of crap.