drunkenmunky23

iTrader: (2)

aite so, im s/c with a 3.125 pulley

recently these are some symptoms i've experienced:
-car boggs/hesitates around 2k rpm (usually happens in 2nd and 3rd gears) - however this seems to have gone away

-sometimes at idle, its starts gettin rough, like the car vibrates a little

-sometimes when i depress the clutch abruptly, when stopping the car will stall

today in stop-and-go traffic, my CEL popped up. i checked it out and i get this code: P0174

it has something to do with air/fuel mixture i think. can someone help out?

Stephen Max

iTrader: (59)

P0174 indicates a lean afr from the left (front) bank.

This code occurs when a lean condition, as measured by the front bank O2 sensor, is beyond the compensation ability of the ecu to correct. That is, the amount of correction required to correct the lean condition is too large for the ecu to provide.

Possible sources of this code (according to the FSM) are:

intake air leak
faulty O2 sensor
faulty injector
exhaust gas leak near the O2 sensor
incorrect fuel pressure
lack of fuel
faulty maf sensor

drunkenmunky23

iTrader: (2)

thanks stephen


i checked the OBD2 again today, got some more codes:
-P0325 - knock sensor 1 Circuit (Bank 1 or Single Sensor)
-P0171 - System too lean (bank 1)
-P0174 - System too lean (bank 2)


could it be that the knock sensor causing the afr to be lean??

Stephen Max

iTrader: (59)

I very seriously doubt it.

Check for an intake leak first (you can use a vacuum gauge connected to a vacuum port on your intake manifold - you should get between 17-20 in. Hg.). Check fuel pressure. After that replace O2 sensors.