ok i got a 97 base model lude i recently put a jdm h22a in the car... the motor has been converted to obd2... anyways when the car is cold it throw a cel P0171 System too Lean and a p0170 and sputters a lil while driving, but only when its cold i can reset the light after a few mins driving and it wont come back on till the car sits and gets cold and i try to drive it and not let it warm up... any ideas?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by christ0pher &raquo;</TD></TR><TR><TD CLASS="quote">ok i got a 97 base model lude i recently put a jdm h22a in the car... the motor has been converted to obd2... anyways when the car is cold it throw a cel P0171 System too Lean and a p0170 and sputters a lil while driving, but only when its cold i can reset the light after a few mins driving and it wont come back on till the car sits and gets cold and i try to drive it and not let it warm up... any ideas?</TD></TR></TABLE>

Can you give more details? What is code P0170?

It could be the primary oxygen sensor is malfunctioning when cold, the iac (?), or something wrong with the fuel system which does not allow proper flow when cold.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ludiferino &raquo;</TD></TR><TR><TD CLASS="quote">

Can you give more details? What is code P0170?

It could be the primary oxygen sensor is malfunctioning when cold, the iac (?), or something wrong with the fuel system which does not allow proper flow when cold.</TD></TR></TABLE>

every once and awhile the the cel for o2 sensor will come on but not all the time... it doesnt idle funny at all so i didnt think it could be the iacv... p0170 i searched the code on here and all i found was primary o2 sensor but i dont think that is rite...so to anwser your question im not sure what that code is...

 

does it sputter while driving, and the only way to make it stop sputtering is to give it some gas?

 

the more gas i give it while its cold the more hesitant and the more it will fall on its face idk i think maybe the o2 might be the cause... when the car is warm it runs 100% perfect...

 

I'd double check the wiring on the primary O2 sensor, sounds like it could be a problem in the heater circuit. Check the harness for any cuts, pinches, bends or abrasions. The O2 doesn't get an accurate reading when the sensor is cold, so it would make sense that the heater circuit is bad. It may have to wait for the exhaust gasses to heat the sensor to operating temperature. If you have a multimeter or test light I'd also check for voltage. I'm not sure if it's a full 12 volts but most likely is, so if your getting voltage just change out the sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by christ0pher &raquo;</TD></TR><TR><TD CLASS="quote">

every once and awhile the the cel for o2 sensor will come on but not all the time... it doesnt idle funny at all so i didnt think it could be the iacv... p0170 i searched the code on here and all i found was primary o2 sensor but i dont think that is rite...so to anwser your question im not sure what that code is...</TD></TR></TABLE>

There's a heater circuit in the o2 sensor that could be malfunctioning. Would explain your problem only when cold. Sparkplugs.com sells oem o2 sensor's for $40. It's the right place to start in your situation.

 

thank you everyone for your help im going to replace that o2 sensor this comming in weekend and i will post results!!! any more input guys??