P1130 & P1131 OBDII Codes - Ford Mustang Forum

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post #1 of 3 (permalink) Old 08-10-2008 Thread Starter
Nightprowler's Avatar
Joined: Aug 2008
Location: Castlewood
Posts: 2
P1130 & P1131 OBDII Codes

I am new to this forum and need to ask some questions about these codes. After the check engine light came on the car seemed to stumble and then stall around 3000 RPM's as I would ease down on the gas the car would miss and then just take off like it had a spooled turbo. I have read some threads similar and some mentioned that the MAF or one of the fuel injectors would possibly be hung open. I have noticed that the car gets really poor gas milage around 16 mpg at best. The car has a PI head swap and the stock gears with a true dual exhaust system, and I would assume the fuel milage would be much better than this. Any help would be greatly appreciated.

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post #2 of 3 (permalink) Old 08-10-2008
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p1130 = lack of ho2s11 switch - fuel trim at limit
p1131 = lack of ho2s11 switch - sens indicate lean

not positive but i think you might have a bad 02 sensor. see what other plp think first in this forum.

07 shelby gt500 537rwhp 520 torque whipple 160mm throttle body, vmp 1.6 supercharge pulley, JLT intake, sct livewire tuner, brenspeed dyno tuned, sequentials tail lights, window tints, low jack, 2010 shelby black/white stripe seats.
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post #3 of 3 (permalink) Old 08-13-2008 Thread Starter
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Location: Castlewood
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Problem solved

Thanks for the reply 02GTConvertable. I did change the O2 sensor and while doing so I found water in the connection which was more than likely the root cause. Again thanks for the reply
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