Running lean on one side
Thread Starter
Teching In
Joined: Aug 2005
Posts: 9
Likes: 0
From: North Carolina
Running lean on one side I'm getting a lean reading on bank 2 of my 00 ls1. P0174 accompanied with P1153. Is it possible to have a vacuum leak on only one side of the motor? Its a noticeable difference in the way it drives as well.
Funny thing is I had set off a lean code for both sides (P0171, P0174) and found an air leak where the PCV valve hose connects to the intake. Fixed that and thought the problem would go away and now Im only getting it on one side.
Im 150 miles through a tank of gas mixed with seafoam so I would assume its not the injectors either?
I have also sprayed starter fluid around all vacuum hoses and my intake manifold to see if I could find a vacuum leak but I couldn't. Any other ideas? Could my lean condition from before "fouled out" my front o2 sensor causing a lean condition now?
Mods are as follows: slp long tubes, tsp x pipe, some type of clear lid that was on the car when I bought it and a k&n air filter
Funny thing is I had set off a lean code for both sides (P0171, P0174) and found an air leak where the PCV valve hose connects to the intake. Fixed that and thought the problem would go away and now Im only getting it on one side.
Im 150 miles through a tank of gas mixed with seafoam so I would assume its not the injectors either?
I have also sprayed starter fluid around all vacuum hoses and my intake manifold to see if I could find a vacuum leak but I couldn't. Any other ideas? Could my lean condition from before "fouled out" my front o2 sensor causing a lean condition now?
Mods are as follows: slp long tubes, tsp x pipe, some type of clear lid that was on the car when I bought it and a k&n air filter
