could it be o2's?
02-05-2010, 02:22 AM
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could it be o2's? Car runs smooth in open loop but as soon as closed loop comes around, it hesitates off its ***. cant accellerate unless its floored, and it randomly runs fine for a few secs then goes back to crap. :/. Could it be the 02's going out? if so, can i disconnect the front o2's and run it? ive read some posts saying yes, i just want to be sure. any help is appreciated, i dont get paid til the 15th and i dont wanna keep driving it with the misfire.
02-05-2010, 09:00 AM
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The MAF seems fine. I cleaned it this morning and when i took my nephew to school it did the same **** as always. I think ima disconnect the o2's and see what it does then. if it runs fine then i know its them i guess?
02-05-2010, 11:20 AM
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i ran the obd on it last week and i had a random multiple misfire, o2 sensor heater circuit below operating temp, a few codes for the air! system being disconnected, and a coolant low temp reading but i had forgotten to reconnect the plug so that one went away. and if i ran with no o2's for a couple days after my header install and it ran pretty good...? i would figure the computer has to have some sorta safe mode in case the o2s go out that the engine can run on a base set air fuel reading maybe? just throwing that out there... your guess is as good as mine lol