Newly Cammed LT1 runs fine until it warms up!
04-15-2012, 08:44 PM
#62
I have the same problem (97 WS6). New opti, new opti harness, coil,icm(spaced),wires, coolant temp sensor. I've unplugged my 02 sensors, cut off exhaust, no passenger side cat. Car has no air, egr, a.c.. I'm stumped.
Car runs perfectly fine when cold, when it warms up it starts to mis-fire and eventually starts having erratic high idle. Then it shuts off.
Won't re-start until cooled down.
Car runs perfectly fine when cold, when it warms up it starts to mis-fire and eventually starts having erratic high idle. Then it shuts off.
Won't re-start until cooled down.
05-12-2012, 12:02 AM
#63
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Ok so I found 3 cut plug wires. I replaced them and both o2 sensors and it got better but still runs badly when warm.
Code 33 turns on at idle and low rpm situations but goes away when accelerating. This is making me think vacuum leak but I could be wrong. Any ideas for a dying thread?
Code 33 turns on at idle and low rpm situations but goes away when accelerating. This is making me think vacuum leak but I could be wrong. Any ideas for a dying thread?
05-12-2012, 12:46 PM
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I sprayed throttle plate cleaner around the runners and vacuum lines to no prevail. The code comes on now IN GEAR with brake applied. I assume its because the idle drops down so low and it sees low vacuum?
If you brake torque it in gear, the car hesitates, and pops both through the intake and exhaust. Like I said it does this when warm after warmed up. Could this be another OPTI issue?
I unplugged the MAP sensor and it seemed to run better at first but then had the same symptoms.
Heres a video of the car acting up: http://www.youtube.com/watch?v=IcFsEaTDGRQ
If you brake torque it in gear, the car hesitates, and pops both through the intake and exhaust. Like I said it does this when warm after warmed up. Could this be another OPTI issue?
I unplugged the MAP sensor and it seemed to run better at first but then had the same symptoms.
Heres a video of the car acting up: http://www.youtube.com/watch?v=IcFsEaTDGRQ
07-05-2012, 08:44 AM
#67
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hey was the solution for this ever figured out i'm kind of in the same boat, no vac leaks found and car is reading low vacuum just curious sorry to bring an old thread to the top.
