Screwed up fuel trims and slow o2
#1
Screwed up fuel trims and slow o2
A buddy of mine hooked up his big expensive obd2 scanner from autozone up to my car a couple of weeks ago and we looked at the fuel trims. The passenger side fuel trim was at 14% and the drivers side fuel trims (short term) was 52%. The drivers side o2 was showing 0mv at idle but slowly picked up voltage when throttle was applied. After i did some looking around i found a burnt up o2 entension. Three of the 4 wires had about a 1" long spot were the wires were bare. So my dad had a couple of extra extension so i trew one on and tied it up out of the way a little bit better. So i was thinking cool problem solved.
Last night the guy was hanging out with us again so i asked him to hook the scanner back up. Fuel trims are still the same and the o2 sensor is now showing .005v and the passenger side was operating normally, dont remember the exact voltage. The drivers side o2 sensor is responding slow to giving it throttle still.
Anybody got any ideas?From what i understand its not a bad o2, because they will stick at a certain voltage when they go bad. Should i go buy a new o2 anyway and try?
Last night the guy was hanging out with us again so i asked him to hook the scanner back up. Fuel trims are still the same and the o2 sensor is now showing .005v and the passenger side was operating normally, dont remember the exact voltage. The drivers side o2 sensor is responding slow to giving it throttle still.
Anybody got any ideas?From what i understand its not a bad o2, because they will stick at a certain voltage when they go bad. Should i go buy a new o2 anyway and try?
Last edited by blk99sleekbeak; 04-13-2010 at 12:09 AM.
#3
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If the sensors spent much time electrically messed up,
the result would be overfueling and a enough soot to
foul them. Turning a little short term problem into a big
long term one.
It's time to swap in some known good ones and see if
the problem is just in the parts.
the result would be overfueling and a enough soot to
foul them. Turning a little short term problem into a big
long term one.
It's time to swap in some known good ones and see if
the problem is just in the parts.