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Bogging during acceleration

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Old Apr 6, 2006 | 09:52 AM
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Default Bogging during acceleration

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.
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Old Apr 7, 2006 | 09:51 AM
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Anybody?
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Old Apr 7, 2006 | 10:03 AM
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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.
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Old Apr 7, 2006 | 11:00 AM
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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.
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Old Apr 10, 2006 | 10:18 PM
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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.

Last edited by adillhoff; Apr 10, 2006 at 10:23 PM.
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Old Apr 17, 2006 | 07:18 PM
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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.
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Old Apr 18, 2006 | 09:48 PM
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Check your fuel pressure. The engine requires more fuel when it is cold, could be why the problem is only when engine is cold.
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Old Apr 18, 2006 | 10:28 PM
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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.
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Old Apr 18, 2006 | 10:38 PM
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Problem with tuning while system is in open loop possibly???
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Old Apr 18, 2006 | 11:25 PM
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you may need to play a little more with the fuel pressure .
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