hey i posted before on how it didnt seem liek it was runnning right this guy i kno hooked it up to a code scanner i guess and its throwin out the following codes
p0151
p0143
p0131
p0174
p0171
ANd does anyone know how i can fix this? he said something about it running lean

 

i looked everything up and its running way lean sometimes it feels like it hesitating and its def running lean how can i fix this

 

First thing is, what year 4.3?

Second, you didn't say what those codes were that you pulled. Can't fix something on one of these until you know why it's running lean. Bad O2 sensor? Injector problems? MAF problems? The list can go on and on.

With hesitation and running lean, it might be something as simple as a fuel filter being clogged or even the screen in the tank being obstructed.

Can you give us what the codes mean?

 

p0151=low o2 voltage sensor 1 bank 2
p0143=low o2 voltage sensor 3 bank 1
p0131=low o2 voltage sensor 1 bank 1
p0174=fuel trim system lean bank 2
p0171=fuel trim system lean

try the obvious. does it idle ok but lacks power under throttle? if so, your fuel filter is probably clogged. how is your fuel pressure after that? pump going bad? clogged fuel sock? is it port fuel or throttle body injected? what year is it?

 

[QUOTE=Texas Terminator]p0151=low o2 voltage sensor 1 bank 2
p0143=low o2 voltage sensor 3 bank 1
p0131=low o2 voltage sensor 1 bank 1
p0174=fuel trim system lean bank 2
p0171=fuel trim system lean

yeh its a 98 it idles fine but if u like take off slowly it hesitates but it slam the gas it takes off reelie fast untiol 3 grand then if feels like its not gettin enough gass cuz it has no power

 

Fuel filter? Fuel pump?

(my shot in the dark)

 

check yo cataletic converter, might be plugging up...

 

sounds like the fuel filter is clogged. how many miles are on it?

 

only has 60,000 where would the fuel filter be?