adillhoff

I have recently run into a weird problem that only happens within the first 2 or 3 minutes of starting the car.

When I try to accelerate it will produce a flat sound and shake a little and bog out. No matter how much throttle I give it, it accelerates very strangely. It is only throwing the O2 and EGR codes. I want to say it was a bad fuel injector, but I figured it would've thrown a code. Any help would be greatly appreciated.

adillhoff

Anybody?

MSURacing

iTrader: (1)

Have you retuned since the cam? If not, it might be going rich down there with that bigger cam. Check your spark plugs and tell us what you see.

98TADRIVER

iTrader: (36)

have you ever replaced your o2's? i would say check the wiring, make sure they didnt get burned on the exhaust. and as far as the egr code, you have to have someone delete that code so it doesnt keep coming up.

adillhoff

I have the pre-cat O2s, but with no cats, there is no spot for the post-cat O2s. So I don't have any.

It didn't do it the first month I had the cam in. It only recently started doing it. I haven't retuned it yet.. I'm low on cash.

adillhoff

UPDATE: It finally threw a code

I am not sure of the number, but it threw a code labeled: "Multiple Cylinder Misfires"

Funny thing is that there is no misfire.

95CAMLS1

Check your fuel pressure. The engine requires more fuel when it is cold, could be why the problem is only when engine is cold.

adillhoff

It's not only when it is cold though. It happens everytime I start the car. I could turn it off at operating temp and turn it right back on 2 seconds later and it would do it again. It happens as the computer goes through the start cycle.

95CAMLS1

Problem with tuning while system is in open loop possibly???

rino1301

you may need to play a little more with the fuel pressure .