Dako
Newbie
Hello everyone. First off, I'm brand new to forums in general and especially new to this one. I've searched high and low across the Internet and have even talked with the service techs at the Pep Boys I work at. I've been driven to join you all here and ask for help with my trucks trouble codes that will not die.
1997 Silverado 5.7 Vortec
It all started (or came to light) after I had to swap a junk yard transmission. First the MAF sensor was bad, so I replaced it. Also, it was time to replace the cats, so I did that. After all of that work I got two new codes.
P0171 and P0174. These codes must come from Hell itself. I understand the appear from a lean condition, whether real or perceived by the computer. To help you get an idea of the frustration and hell I've been through, here is a list of what I've done so far. I have replaced...
The MAF sensor
Both upstream O2 sensors
Fuel Filter
Fuel pump
Intake manifold gaskets both upper and lower as well as the throttle body and fuel injector module gaskets.
I've also checked for and sealed pretty much any area where air could leak in, such as...
Around the MAF sensor
PCV valve
PCV grommet
PCV elbow
Intake hose to throttle body
Oil dipstick o-ring
Brake booster hose
Valve covers
Oil fill cap.
But wait! There's more! I've looked to see if there are any air leaks after the engine in places like...
Where the headers meet the block
Pipes to header
Cats to muffler flange
And anywhere else around the O2 sensors themselves.
Before being as drastic as throwing parts at this, I used both my coworkers scan tool at the shop to read the codes and then research their causes and possible fixes as well as one I went out and bought for myself. I checked for good readings on every sensor, I measured fuel pressure, I've checked for ground on nearly everything.
After close to 6 months and three tickets later for expired inspection and registration stickers because of the Devils Service Engine Soon light, I am at wits (and wallets) end. As of posting I have scanned my truck again and have found things are just *********** and I've now ended up the following codes:
P0171
P0174
P0151
P1345
I don't even know how the hell the last one is showing up, both the crank and cam position sensors have been replaced already (well before this psychological torture started).
So my question is, what could it possibly be? What should I do now? Was my co worker right, should I grab a new ECM/PCM? A there any fixing this? Should I put my truck out of its misery? Myself, lol? I am the only person in my family that currently has a job. I am only 22, and making $10/hr, I can't afford anymore tickets, and I need a reliable ride.
1997 Silverado 5.7 Vortec
It all started (or came to light) after I had to swap a junk yard transmission. First the MAF sensor was bad, so I replaced it. Also, it was time to replace the cats, so I did that. After all of that work I got two new codes.
P0171 and P0174. These codes must come from Hell itself. I understand the appear from a lean condition, whether real or perceived by the computer. To help you get an idea of the frustration and hell I've been through, here is a list of what I've done so far. I have replaced...
The MAF sensor
Both upstream O2 sensors
Fuel Filter
Fuel pump
Intake manifold gaskets both upper and lower as well as the throttle body and fuel injector module gaskets.
I've also checked for and sealed pretty much any area where air could leak in, such as...
Around the MAF sensor
PCV valve
PCV grommet
PCV elbow
Intake hose to throttle body
Oil dipstick o-ring
Brake booster hose
Valve covers
Oil fill cap.
But wait! There's more! I've looked to see if there are any air leaks after the engine in places like...
Where the headers meet the block
Pipes to header
Cats to muffler flange
And anywhere else around the O2 sensors themselves.
Before being as drastic as throwing parts at this, I used both my coworkers scan tool at the shop to read the codes and then research their causes and possible fixes as well as one I went out and bought for myself. I checked for good readings on every sensor, I measured fuel pressure, I've checked for ground on nearly everything.
After close to 6 months and three tickets later for expired inspection and registration stickers because of the Devils Service Engine Soon light, I am at wits (and wallets) end. As of posting I have scanned my truck again and have found things are just *********** and I've now ended up the following codes:
P0171
P0174
P0151
P1345
I don't even know how the hell the last one is showing up, both the crank and cam position sensors have been replaced already (well before this psychological torture started).
So my question is, what could it possibly be? What should I do now? Was my co worker right, should I grab a new ECM/PCM? A there any fixing this? Should I put my truck out of its misery? Myself, lol? I am the only person in my family that currently has a job. I am only 22, and making $10/hr, I can't afford anymore tickets, and I need a reliable ride.