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Random Misfires on Cammed Trans Am

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Old 04-09-2013, 11:30 AM
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Damn O2 sensors...my car ran fine pre-tune and then post tune it revealed a bad O2. 50 bucks later it runs fine.

Glad you figured it out! Enjoy the car.

I also wouldn't blame the seller if it ran fine for 400 miles, sometimes crap like that happens. O2 sensors wear out.
Old 06-17-2013, 09:25 PM
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Car runs like **** it has a cam but it smokes trust me this guy screwed me I went to the 1/8 and it ran a 8.4 with a damn cam it consumes oil
Old 06-17-2013, 09:44 PM
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I trust this engine is going to be headache to keep I wish the seller would have told the truth according to his ad it should of been making 386rwhp it runs like a stock ls1 I just wish I could figure out why I am losing so much power
Old 06-17-2013, 10:05 PM
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What was mph on your run
Old 06-17-2013, 10:11 PM
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88.95
Old 06-17-2013, 10:11 PM
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88.95 mph was my best run wasn't getting any better I was expecting at least 92mph
Old 06-17-2013, 10:33 PM
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Yeah that's week. Besides the "cam" what else is done to it
Old 06-18-2013, 07:39 AM
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bolt on thats about it
Old 06-18-2013, 08:09 AM
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auto 3.23
Old 06-18-2013, 11:40 AM
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Originally Posted by zrultima
88.95 mph was my best run wasn't getting any better I was expecting at least 92mph
92 is pretty optimistic. I make 470WHP and trap 97-98. When my setup made ~340WHP I was trapping roughly 86-87. Use that as a benchmark maybe?
Old 06-18-2013, 01:05 PM
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ur an m6 I am an auto and according to what he had on a dyno sheet I was suppose to be at 386 rwhp u probably had traction issues
Old 06-21-2013, 02:23 PM
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I bought some lucas Stop oil see if it helps the valve seal problem so I can at least pinpoint where my problem is I hope its just the valve seals
Old 06-22-2013, 07:40 PM
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Get it retuned
Old 06-26-2013, 02:03 PM
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Even if I get it retuned at pcmforless or Tick performance would that help my missfire or oil consumption if you see the engine at idle you can notice a small missfire just how seeing it idle but you cant feel it when driving
Old 10-15-2013, 02:46 PM
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Been having the same problem as you, car tries to die randomly either cruising or at a stop. I have the p0121, p1133 and p1153 codes popped up after my tuner, its hard to keep up with the car while in traffic because it randomly wants to die, did you completely solve your problems with the 02 sensor replacement? I changed mines for some NGK about 3-4 years ago but they're relatively new since I've only put about 6000 miles on the car since 2006.
Old 10-25-2013, 12:47 PM
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Well the car stop dying and surging on me but i still have the issue where the car does not feel rihht it would never turn off me in the warm weather but idk the hell the previous owner it got 386 rwhp could be bullshit like his other lies but car dont run right I coupd figure it outish i
Old 10-25-2013, 12:50 PM
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Ive heard some tell me my timings off
Old 10-31-2013, 09:16 AM
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Originally Posted by MLP00Z28
Been having the same problem as you, car tries to die randomly either cruising or at a stop. I have the p0121, p1133 and p1153 codes popped up after my tuner, its hard to keep up with the car while in traffic because it randomly wants to die, did you completely solve your problems with the 02 sensor replacement? I changed mines for some NGK about 3-4 years ago but they're relatively new since I've only put about 6000 miles on the car since 2006.
Well the car runs fine in trafffic it idles way low like 500 rpm when I smashed the brakes it may turn off due to no vacuum im guesing but changin 02 sensors helped. AS far as leaking oil all i did was changed grade and now its not consuming but I am going to work on the top end redo gaskets and such and hopefully it will resolve my issue



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