2001 Throwing P0172 & P0175

TORC811

NAXJA Member
NAXJA Member
I swapped injectors and TB on my XJ while I was replacing a locked up alternator. Now that I have everything back together, the Jeep is throwing P0172 and P0175 codes. I have done some searching and will:


1) check the O2 Sensor heater fuse
2) double check all of the ground wires to be safe
3) swap the MAP sensor with a spare (AutoZone's suggestion but I don't think this is it)
4) Double check the air filter to make sure it is in good shape



More background:
2001 XJ Limited with 72,000 miles, K Suspension 12-hole injectors, and a 62mm TB that I got from ForeWheeler. The Jeep starts and idles fine in hot weather but is sluggish at low acceleration. Once I get near 2000 RPM, it takes off and runs great.


Am I on the right track? Or should I be looking at something else?
 

RCP Phx

New member
Sounds like the wrong injectors! Your about the 3rd person this month that got injectors from "K" that were not the right ones.
 

TORC811

NAXJA Member
NAXJA Member
Sounds like the wrong injectors! Your about the 3rd person this month that got injectors from "K" that were not the right ones.

I have seen a couple of the other posts and am prepared for that. Just trying to eliminate other possibilities first. I would have assumed I would see a misfire or injector code if it was an injector.
 

sidewaysstarion

Coffee Drinker
NAXJA Member
Chapter BOD
Your Jeep is running way too rich, most likely the cheap Chinese injectors from Alibaba that Mr. "K" sold you are grossly out of spec.
 

RCP Phx

New member
What was the part# on the injectors? I think the codes your getting say it all!

P0172 1/1 Fuel System Rich A rich air/fuel mixture has been indicated by an abnormally lean correction factor.

P0175 2/1 Fuel System Rich A rich air/fuel mixture has been indicated by an abnormally lean correction factor.
 

TORC811

NAXJA Member
NAXJA Member
I talked to him this morning. Sounds like I was part of the known bad batch. Looks like they are coming out tonight or this weekend.
 

TORC811

NAXJA Member
NAXJA Member
Are you ones you have now #0280156161(Red)? Are they sending you the same ones?

The ones that I have now are red. I would have to verify the part number. I am not sure what he is sending me... he is waiting for another shipment.



I have a set of 4-hole (I think Bosch) coming from a buddy tomorrow to get me back up and running.
 
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