PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

random on/off miss?

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Old Nov 21, 2004 | 09:48 PM
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Default random on/off miss?

once the car is about 100 degrees or so (about a minute with it on), it will miss and buck and such. it does it sometimes and other times it is fine. when it does it, i can push in the clutch while it still rolling, shut it off, turn the key back on, and normally pop the clutch to start it back up. it then runs fine for another few minites then does it again. 40k miles on the car

LT headers, ORYP, cutout (normally capped), lid, and rear sensors tuned out

any help?
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Old Nov 21, 2004 | 10:05 PM
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Originally Posted by ramairstyle00
once the car is about 100 degrees or so (about a minute with it on), it will miss and buck and such. it does it sometimes and other times it is fine. when it does it, i can push in the clutch while it still rolling, shut it off, turn the key back on, and normally pop the clutch to start it back up. it then runs fine for another few minites then does it again. 40k miles on the car

LT headers, ORYP, cutout (normally capped), lid, and rear sensors tuned out

any help?

Do you have any scanning/data logging software?
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Old Nov 21, 2004 | 10:08 PM
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no but HorsePowerFactory does. it said i was getting a code from an O2 sensor but they cleared it, had me run a log around a few blocks, and it came up with everything good.... it wouldn't do it for me
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Old Nov 21, 2004 | 10:42 PM
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Your 02s are prob. on their way out.
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Old Nov 21, 2004 | 11:08 PM
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how long does it normally take for them to go out?
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Old Nov 21, 2004 | 11:26 PM
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Originally Posted by ramairstyle00
how long does it normally take for them to go out?
I don't know if I could say a set time, but a way to tell is if one of them gets "lazy" or isn't switching as well. The only way to tell this is with a datalogging program though.
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