FYI codes 41 and 91
#1
FYI codes 41 and 91
just want to know what you guys think......looked into everything for months and just so you know if you get codes 41 and 91 at the same time it is a electrical problem....most likely a ground.......not vacume leacks you get 42 and 92 if its vacum. bad grounds couse false readings. thats why if you are getting lean reading but running rich coused by bad ground either at the computer or the wire harness.
does this sound right to you guys too
does this sound right to you guys too
#3
My car always showed 41 and 91 with a vacuum leak.
It could be a ground but, it also could be a vacuum leak.
41 and 91 are codes for voltage at the o2 senors is lean. it doesn't mean the car is running lean while you smell fuel out the pipes at idle.
It could be a ground but, it also could be a vacuum leak.
41 and 91 are codes for voltage at the o2 senors is lean. it doesn't mean the car is running lean while you smell fuel out the pipes at idle.
Last edited by TrimDrip; 09-27-2009 at 11:00 PM.
#5
#6
vacum leaks couse the true condition...i guess what i mean is if you get 41 and 91 and it smells like gas is getting poured out the exuast pipes its electrical. if you get 41 and 91 and dont smell gas its vacume
Last edited by toms93lx; 09-27-2009 at 11:17 PM.
#7
a vacuum leak will pull in unmetered air that the MAF is not reading and cause your car to run lean. It will also cause there to be a heavy smell of fuel at idle and a rolling idle at times. A bad one will cause a really high idle.
#9
That is why the car is rich because of them trying to compensate, the best I can figure. Once the sensors got the signal that the voltage is lean, it added more fuel. Sorta like a safe mode. Hell, you can run the car without the 02 sensors even plugged up. It will be rich but, it will run.
The car is not going to show a rich condition because of a vacuum leak because the car is running lean from the unmetered air the vacuum leak is pulling in. Make sense?
The car is not going to show a rich condition because of a vacuum leak because the car is running lean from the unmetered air the vacuum leak is pulling in. Make sense?
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lincolnshibuya
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