2005 mustang gt with air induction running lean

[dp9849]

Code: Select all

u7140
2005 ford mustang gt

[j.mike@diablosport]

We're really going to need a question to figure out what you need to know here.

What brand of cold air kit are you using?

[dp9849]

[quote="j.mike@diablosport"]Wei bought the mustang this way, the intake has AFE stamped onto it , getting code P2272 lean condition.

[speedshop]

AFE claims no tune required, but I don't know if they have a reducer or not on the inside. I'll have to check there site. You could try adding 8% to the MAF transfer for now. Have you checked the fuel trims at all?

[dp9849]

i added the 8%, so now to drive her for a few days to see if light stays out, thanks. havent checked the fuel trims yet

[j.mike@diablosport]

A lean condition can also be due to an air leak. Check all the clamps and fittings on the intake system.

[dp9849]

light came back on same code, p2272, what else can cause this code?

[dp9849]

also replaced MAF sensor, checked fittings and intake for loose connections, still no luck, im at my wits end here, giving up and taking to a garage... thanks for your suggestions,

[julan]

you need to check weather it is really lean by a wide band.

[dp9849]

whether its lean or not, the code is still there and i cannot get the car inspected. thanks for your heklp

[mikel]

try adding up to 15% to the MAF curve.

[dp9849]

ive been told i have a bad catitytic converter on the drivers side, i have to put on a new exhaust. so nothing else will help that , thanks for taking the time to help me out.

[dp9849]

i cant even spell "catalytic "right,,, hard code to troubleshoot,,, seems i got ripped off when i bought the car, on the left rear o2 sensor had a resistor to keep the cat code off, thats what was tripping the "lean code" drivers side cat on the x-pipe is bad and the system is welded. so when my wife comes home with my truck , we are getting a new exhaust system, and putting it in this weekend. magnaflow xpipe and pipes to the rear, nice sound and she will be legal as well

[dp9849]

so tomorrow i finish installiing a magnaflow xpipe with new cats, replace the fudged O2 sensor . Is there any special tuning tips i can do with the combo of AFE intake and the X-pipe, with a 5 speed.

[dp9849]

passed inspection today after replacing x pipe and removing resistors on the o2 sensors that hid a 'bad cat code' and turned the p2272 code on. so i was troubleshooting for a vacuum leak when i had a bad cat. now its running great with the 87 octane performance tune in except for hard starting 1st thing in the morning, any ideas for that???