cant get rid of p1131 cel - Ford Mustang Forum
 
LinkBack Thread Tools
post #1 of 4 (permalink) Old 06-26-2013 Thread Starter
Rookie
 
Mzsn95's Avatar
 
Joined: Mar 2013
Location: Wanaque
Posts: 20
 
cant get rid of p1131 cel

Im running no cats and a bama tune and the light went off temporarily and came back with the p1131 code. I know this could be a bad bank 1 o2 sensor but i was wondering if that code could be for something else. I noticed that at idle it will drop to about 500 rpms before returning to normal. So now im thinking vacuum leak, egr, iac, or maf. Just wanted to know if anyone has been through a similar experience and can shed some light as to what i should attack first. Thanks guys!
Mzsn95 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 06-27-2013
Site Sponsor
 
AMDanBailer's Avatar
 
Joined: Oct 2009
Location: Malvern
Posts: 4,280
 
Quote:
Originally Posted by Mzsn95 View Post
Im running no cats and a bama tune and the light went off temporarily and came back with the p1131 code. I know this could be a bad bank 1 o2 sensor but i was wondering if that code could be for something else. I noticed that at idle it will drop to about 500 rpms before returning to normal. So now im thinking vacuum leak, egr, iac, or maf. Just wanted to know if anyone has been through a similar experience and can shed some light as to what i should attack first. Thanks guys!
I'm sorry to hear about the issues you're having with your Tune. We send out thousands of tunes and build them all from the ground up for your PCM code and your mods. They're not just "canned" tunes, they're built custom by our team, so every once in a while it's possible we mess one up! We'll definitely get it straightened out for you, though if this is the case! Give one of our Bama Tuning Specialists a call and they'll work with you to figure out exactly what's going on.

Our Bama Performance tuning specialists are here in the building Monday-Friday from 9AM-5:30PM EST and Saturday 9AM-5:30PM EST

-Dan

Dan Bailer | AmericanMuscle.com
Toll Free: 866.727.1266 | M-F 9AM-9PM EST | Sat 9AM-5:30PM EST
Bama Hotline: 888.226.9764 | M-F 9AM-5:30PM EST | Sat 9AM-5:30PM EST
Free Same-Day Shipping!
AMDanBailer is offline  
post #3 of 4 (permalink) Old 06-27-2013
SHELBY GT 350 Member
Classic Member
4.6L Member
 
SoCal2V's Avatar
 
Joined: Sep 2010
Location: Hell
Posts: 6,718
 
P1131 is indicative of a lean condition at Bank 1 (passenger side of engine). Could also be a bad sensor, but in my observations O2 sensors are just doing their job 99% of the time and reporting an out of range value to the pcm, as opposed to being a failing sensor.

I think you're on the right track with your suspicions so far (vacuum leak, etc), but something else I would check out is whether or not a leak exists at the midpipe to manifold flange. You mentioned that you are not running cats, so that leads me to believe that you're running an aftermarket midpipe (as opposed to stock pipe with cats removed)? If that is correct, did you use a new gasket at that connection? That gasket there should be replaced any time the midpipe is removed, so if the answer to that last question is "no" then I would strongly suspect a leak there.


2001 GT Convertible

All the usual bolt-ons
1967 Coupe
200 I6, C4
SoCal2V is offline  
post #4 of 4 (permalink) Old 06-29-2013 Thread Starter
Rookie
 
Mzsn95's Avatar
 
Joined: Mar 2013
Location: Wanaque
Posts: 20
 
Sorry guys I thought I replied a few days ago but I guess it never went through. The tune was good I called American muscle a while back to make sure. I bought the car with the o/r h-pipe already on so ill put in on the lift and check that next to make sure it's done right, but I've done some research and I found a few people that had the same problem and it was the h-pipe manifold gasket so I'm hoping that's the problem. Thanks guys ill let you know what happens!


Sent from AutoGuide.com Free App
Mzsn95 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Mustang Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a VALID email address for yourself, otherwise you will not receive the necessary confirmation email needed to confirm, validate and activate your new AFM member account.

Failure to provide a VALID email address, will result in the cancellation of your new AFM member account registration.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may 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
Trackbacks are Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182