NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > OEM Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

OEM Tech Discussion Forum for OEM (Original Equipment) or stock XJs and MJs.

Reply
 
Thread Tools Display Modes
  #1  
Old June 8th, 2018, 06:26
TORC811's Avatar
TORC811 TORC811 is offline
NAXJA Member
 
Join Date: Jan 2015
Location: Davison, MI
Posts: 82
2001 Throwing P0172 & P0175

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?
__________________
#4650
88 MJ-Short Arm w/ drops/PAC springs/Treps
01 XJ-Short Arms (long arm & 4.56s coming soon)
Reply With Quote
  #2  
Old June 8th, 2018, 07:09
RCP Phx RCP Phx is offline
NAXJA Forum User
 
Join Date: Mar 2003
Location: Phoenix,Az
Posts: 11,481
Re: 2001 Throwing P0172 & P0175

Sounds like the wrong injectors! Your about the 3rd person this month that got injectors from "K" that were not the right ones.
Reply With Quote
  #3  
Old June 8th, 2018, 07:30
TORC811's Avatar
TORC811 TORC811 is offline
NAXJA Member
 
Join Date: Jan 2015
Location: Davison, MI
Posts: 82
Re: 2001 Throwing P0172 & P0175

Quote:
Originally Posted by RCP Phx View Post
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.
__________________
#4650
88 MJ-Short Arm w/ drops/PAC springs/Treps
01 XJ-Short Arms (long arm & 4.56s coming soon)
Reply With Quote
  #4  
Old June 8th, 2018, 07:58
sidewaysstarion's Avatar
sidewaysstarion sidewaysstarion is offline
Coffee Drinker
 
Join Date: Jan 2012
Location: Torrance, CA
Posts: 2,562
Re: 2001 Throwing P0172 & P0175

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.
__________________
Quote:
Originally Posted by cracker
I seem to have run out of self tapping washers
99 4.0/AW4/231 8.25/D30 ARB's 4.56's 33's deavers and a few other things.

Click here to join the red team
Reply With Quote
  #5  
Old June 8th, 2018, 09:18
RCP Phx RCP Phx is offline
NAXJA Forum User
 
Join Date: Mar 2003
Location: Phoenix,Az
Posts: 11,481
Re: 2001 Throwing P0172 & P0175

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.
Reply With Quote
  #6  
Old June 8th, 2018, 09:36
TORC811's Avatar
TORC811 TORC811 is offline
NAXJA Member
 
Join Date: Jan 2015
Location: Davison, MI
Posts: 82
Re: 2001 Throwing P0172 & P0175

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.
__________________
#4650
88 MJ-Short Arm w/ drops/PAC springs/Treps
01 XJ-Short Arms (long arm & 4.56s coming soon)
Reply With Quote
  #7  
Old June 8th, 2018, 10:59
RCP Phx RCP Phx is offline
NAXJA Forum User
 
Join Date: Mar 2003
Location: Phoenix,Az
Posts: 11,481
Re: 2001 Throwing P0172 & P0175

Are you ones you have now #0280156161(Red)? Are they sending you the same ones?
Reply With Quote
  #8  
Old June 8th, 2018, 11:45
TORC811's Avatar
TORC811 TORC811 is offline
NAXJA Member
 
Join Date: Jan 2015
Location: Davison, MI
Posts: 82
Re: 2001 Throwing P0172 & P0175

Quote:
Originally Posted by RCP Phx View Post
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.
__________________
#4650
88 MJ-Short Arm w/ drops/PAC springs/Treps
01 XJ-Short Arms (long arm & 4.56s coming soon)
Reply With Quote
  #9  
Old June 8th, 2018, 14:24
RCP Phx RCP Phx is offline
NAXJA Forum User
 
Join Date: Mar 2003
Location: Phoenix,Az
Posts: 11,481
Re: 2001 Throwing P0172 & P0175

Those are to big for a stock motor. In my stroker, I'm currently running 0280155849's (4 hole version of about what you have now)and they run a touch fat when WOT. I'm thinking about trying some 0280155715's!
I've got a set of 0280156007's that are a 4 hole factory upgrade that worked great.
http://www.jeep4.0performance.4mg.com/tech_specs.html
Reply With Quote
  #10  
Old July 20th, 2018, 13:31
RCP Phx RCP Phx is offline
NAXJA Forum User
 
Join Date: Mar 2003
Location: Phoenix,Az
Posts: 11,481
Re: 2001 Throwing P0172 & P0175

What ever happened???
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Throwing a p0500 xjsport96 OEM Tech Discussion 2 October 9th, 2010 22:41
Just throwing it out there... SurfXJSnow Colorado Chapter 6 October 30th, 2009 17:29
throwing codes tkjeeper OEM Tech Discussion 9 November 8th, 2007 15:26
98 XJ Throwing Codes GlasspackedXJ OEM Tech Discussion 4 March 24th, 2007 16:16


All times are GMT -7. The time now is 23:27.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014