troubleshooting gurus help!!!! code P1151 - Northern California Ford Owners

This is topic troubleshooting gurus help!!!! code P1151 in forum Tech Talk at Northern California Ford Owners .

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Posted by yesIdid (Member # 58) on :

where would u look first to address this code?

I've got a mil that won't go away, and I'll be damned if I take my car to a shop [Mad]

.

Tanzpodehap...

Posted by Black94 5.0 (Member # 655) on :

P1151 Lack Of HO2S-21 Switch Indicates Lean (Ford)

What exhaust are you running?....

Posted by yesIdid (Member # 58) on :

weld-in ultraflos, offroad h-pipe (with brand new mils), and stock manifolds...

[ February 27, 2004, 01:15 AM: Message edited by: yesIdid ]

Posted by Black94 5.0 (Member # 655) on :

So, you only have weld in mufflers?....Any other mods, like a mass air meter, cold air kit, etc??....

Posted by Black94 5.0 (Member # 655) on :

OK, you edited your post....

SO, you do have an off road pipe?...It's most likely the MIL eliminators...They aren't working right, you need new ones....

Edit:ASSUMING that the MIL's you have now were installed correctly..

[ February 27, 2004, 01:28 AM: Message edited by: Black94 5.0 ]

Posted by yesIdid (Member # 58) on :

the rears play no role in a/f metering, right???

only a malfunctioning front 02 would lean-out the a/f ratio, right???

let me post my mods...

Black 99 GT w/the 35th Anniversary package: SPEC Stage 1, SPEC alum. flywheel, Accufab plenum & 70mm throttle body, MM clutch pedal adjuster, FMS alum. d/shaft, 3.73s w/Speedcal, SHM offroad h-pipe, Ultraflos, Steeda u/drives w/timing adjuster, K&N, 180* t/stat, BBK progr. rate springs, Hotchkis c/c plates, Triax, UPR firewall adjuster and quadrant , and an electric moonroof.

Posted by 98slowhoe I don't have a fast car (Member # 895) on :

quote:
Originally posted by yesIdid:
the rears play no role in a/f metering, right???

only a malfunctioning front 02 would lean-out the a/f ratio, right???

let me post my mods...

Black 99 GT w/the 35th Anniversary package: SPEC Stage 1, SPEC alum. flywheel, Accufab plenum & 70mm throttle body, MM clutch pedal adjuster, FMS alum. d/shaft, 3.73s w/Speedcal, SHM offroad h-pipe, Ultraflos, Steeda u/drives w/timing adjuster, K&N, 180* t/stat, BBK progr. rate springs, Hotchkis c/c plates, Triax, UPR firewall adjuster and quadrant , and an electric moonroof.

Out of all your mods I think your electric moonroof is causing most of your problems, but I am thinking it might even bee your pedal adjuster! [Big Grin]

Posted by Black94 5.0 (Member # 655) on :

quote:
Originally posted by yesIdid:
the rears play no role in a/f metering, right???

only a malfunctioning front 02 would lean-out the a/f ratio, right???

True, but I think the code is refering to the O2 Heater wire, so it could still be your MIL eliminators...What brand MIL's did you get, Dallas Mustang?...Call the company and tell them you have ONLY an off-road H on your car and keep gettin the P1151 code...Ask then if the P1151 is a code that could be generated from a bad MIL eliminators....

Here's another thing...You listed the "Steeda u/drives w/timing adjuster"...What is your timming set to?...If you're running too advanced, try setting the timming back to stock and disconnect your battery(to reset your EEC)and seeing if you still get the code....

I hope this info helps... [patriot]

Posted by yesIdid (Member # 58) on :

yeah, the t/a is set to 14*; shouldn't be a problem.

maybe I'll give dallas mustang a call monday.

thanks

Posted by the50ho (Member # 73) on :

quote:
Originally posted by 98slowhoe I don't have a fast car:

quote:
Originally posted by yesIdid:
the rears play no role in a/f metering, right???

only a malfunctioning front 02 would lean-out the a/f ratio, right???

let me post my mods...

Black 99 GT w/the 35th Anniversary package: SPEC Stage 1, SPEC alum. flywheel, Accufab plenum & 70mm throttle body, MM clutch pedal adjuster, FMS alum. d/shaft, 3.73s w/Speedcal, SHM offroad h-pipe, Ultraflos, Steeda u/drives w/timing adjuster, K&N, 180* t/stat, BBK progr. rate springs, Hotchkis c/c plates, Triax, UPR firewall adjuster and quadrant , and an electric moonroof.
Out of all your mods I think your electric moonroof is causing most of your problems, but I am thinking it might even bee your pedal adjuster!

you beat me to it! [Big Grin]

Posted by 88bird (Member # 1424) on :

P1151 is lean bank 2 (drivers side), however it has nothing to do with mil eliminators, and the down stream sensors. This code refers to the up stream sensors(closest to the exhaust manifold) . Possibly damaged the sensor when swaping it into the new pipe, or did it not get plugged in? Try a new sensor. I recomend buying one from a ford dealer if you can get hooked up with a good price.

Posted by yesIdid (Member # 58) on :

quote:
Originally posted by 98 Cobra:
How does your car idle?
Does the idle jump around at a stop light?
Also how many miles are on the car?

Could be a case of bad front o2 sensors...

My car idles like SHIT!!!!!!!!!!!!!!!
YES!!! The idle jumps around at a stop light; especially when there's a big drop in rpms, like coming down an freeway exit ramp. MOF, the car cuts off sometimes.

I've got about 56K on the odometer.

88Bird- you're right about the code, and I got a fat deal on two front O2 sensors from some dude off the Corral.

Thanks for the input folks [patriot]

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