[88_stanga]

ok so i met up with some friends to go to a car show about an hour from home. while waiting i decided to plug my tuner in and turn my traction control off. after shutting my tcs off i buzzed over to the gas station across the street to get gas before the drive. now i always buy mobil gas. well because i wasnt near one i opted for the cumberland farms beside me. put 9 gallons in and my friends and i went on our way. after cruising down the highway i noticed my check engine light was on. so at our next stop i scanned the codes real quick. i came up with

P0148 Fuel System Delivery problem ( i think thats what it said)
P0171 Bank 1 Too lean
P0174 Bank 2 Too lean

baffled by what could cause this. the first thing that came to mind was the gas i had purchased. so i cleared the codes and we continued on our trip. we get to the car show without the light comming back on. so i figured it may have been a fluke thing. after about 3 hours of hanging out and seeing what everyone else brought we decided to leave. i didnt even make it out of the parking lot before the light came back on. im now down to a 1/4 tank of gas and i think im going to get some fuel injector cleaner and a full tank of premium. the car didnt feel too different. but when i thought it did, it could have been in my head. any thoughts? anyone have this problem before. im running the C&L Intake on the Racer Tune on the Diablo tuner. anyone please chime in with your thoughts. sorry for the length

p.s. when i got home i flashed the ECU back to stock then reloaded the racer tune and cleared the codes.

[stlwagon]

I'd say bad gas and possible fuel filter contamination.

[rhbuff6622]

Originally Posted by 88_stanga

ok so i met up with some friends to go to a car show about an hour from home. while waiting i decided to plug my tuner in and turn my traction control off. after shutting my tcs off i buzzed over to the gas station across the street to get gas before the drive. now i always buy mobil gas. well because i wasnt near one i opted for the cumberland farms beside me. put 9 gallons in and my friends and i went on our way. after cruising down the highway i noticed my check engine light was on. so at our next stop i scanned the codes real quick. i came up with

P0148 Fuel System Delivery problem ( i think thats what it said)
P0171 Bank 1 Too lean
P0174 Bank 2 Too lean

baffled by what could cause this. the first thing that came to mind was the gas i had purchased. so i cleared the codes and we continued on our trip. we get to the car show without the light comming back on. so i figured it may have been a fluke thing. after about 3 hours of hanging out and seeing what everyone else brought we decided to leave. i didnt even make it out of the parking lot before the light came back on. im now down to a 1/4 tank of gas and i think im going to get some fuel injector cleaner and a full tank of premium. the car didnt feel too different. but when i thought it did, it could have been in my head. any thoughts? anyone have this problem before. im running the C&L Intake on the Racer Tune on the Diablo tuner. anyone please chime in with your thoughts. sorry for the length

p.s. when i got home i flashed the ECU back to stock then reloaded the racer tune and cleared the codes.

When I truned my traction control off I had a permanent message that wouldnt go away that said I needed to check the traction control so I just reactivated it, but I didnt have a problem with the way the car ran.

[j_88gt]

your car is running lean because your not gettting enough fuel. either clogged fuel filter that i doubt very much or a bad fuel pump. fuel delivery error is the fuel rail pressure sensor sensing fuel pressure out of specs. check your freeze frame data for FRP at the time of the error. if frp is below 30psi then for sure you got fuel problems

[88_stanga]

its all set now. i put a fresh tank of 93 in the car this morning when i got to work. cleaned my air filter and then took the car for a beat run down the highway. she seems to be running strong again.

[travelers]

I think I would change the fuel filter at the first chance, just to make sure in case that load of gas left some garbage in there.

[monk99]

Not to hijack the thread, but how easy is it to replace the fuel filter? I'm pretty sure mine is causing problems. Or should I take it into the dealership and have them do it. I've worked plenty of cars, but I just don't know where the filter is and how easy it is to replace. Any help is appreciated.

[88_stanga]

i was actually curious to know if it was on the frame rail like most vehicles were. or if it wasnt servicable at all. i never cared to look when i was under the car for oil changes.

[stlwagon]

It's in the little black basket on the bottom of the tank.

[travelers]

Here is 2 pdf files on the fuel filter location and info.

[stlwagon]

The PDFs have been included in Tech Links . Thanks Drew!