misfire when warmed up (not the opti)
08-22-2009, 05:36 PM
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misfire when warmed up (not the opti) well, after replacing the opti, plugs and wires, cleaning the maf, running lucas fuel injector cleaner, and an oil change, my trans am still has a misfire. wtf. any ideas?
08-23-2009, 12:53 AM
#5
yea, only one of my o2 sensors failed and it caused this. i had other problems too though, like surging and stuff caused by the fuel filter and nearly clogged shut injector, not to mention a small crack in the porcelain of one of my plugs.
my car was missing on 1, 4, and 7. no wonder it was so damn slow and unbalanced... lol i had a v5!
my car was missing on 1, 4, and 7. no wonder it was so damn slow and unbalanced... lol i had a v5!
08-23-2009, 06:47 PM
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i'm getting o2 sensor on the other forum, so i'll check into that. are there more than one sensor i need to look for? and i did have 2 plugs that were just straight up broke.
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08-24-2009, 11:48 AM
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Just to check......I had the same problem and while changing my plugs I noticed the vacum hose below the pcv hose on the throttle body was all dry rotted and torn!!! Replaced it and she ran great!!!
09-14-2009, 08:54 AM
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Not to hijack, but Im getting the same kind of studdering esp. when warmed up, I have new plugs/wires. one yr. old msd opti. new coil,fuel filter. On my autoxray scanner, my 02's are switching and when warmed up, it goes in closed loop. could one of my 02's still be bad, but still be able to show that there switching voltage on my scanner? This is all on my 93 ta. no more egr/cats. and LT's and catback on car.
