IS F (2008-2014) Discussion topics related to the IS F model

My car is in limp mode

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Old 08-24-12, 09:11 AM
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eoph
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Default My car is in limp mode

along with the sensor 1/2 errors i'm also getting a cylinder 4 misfire, and sometimes a random cylinder misfire error. car is almost undrivable.
Old 08-24-12, 09:21 AM
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SC400slide
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Someone might have tried to steal spark plug wires.
Old 08-24-12, 09:25 AM
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eoph
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Car is always garaged, so that can't be the case.
Only diff today from yesterday is it's raining.

Also forgot to mention it's complaining:
P0175
System Too Rich (A/F Rich Malfunction, Bank 2)
P0300
Random Misfire Detected

Would the a/f sensor cause this kind of behavior?
Old 08-24-12, 09:46 AM
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eoph
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Also hv the flashing cel of course.
Old 08-24-12, 09:58 AM
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eoph
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Another clue is looking at my errors code before and after changing to vampire taps for the o2 simulator. Before it complained about low voltage for sensor 1 and 2, and now it complains about high voltage even for sensor 1!. but they're not related. or is the o2 simulator tapping power from the sensor 1?
Old 08-24-12, 10:07 AM
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eoph
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Bank 2 sensor 1 is also stuck in rich.
P2198
Old 08-24-12, 10:13 AM
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Boma
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Did this happen while you're driving or when you started her up today?
Old 08-24-12, 10:37 AM
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eoph
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I started her after i cleared codes, drove 1km then cel came on and i felt accel was weird, and it went into limp mode. Parked at side of road multiple times to work, each time i clear it, it comes back after i apply throttle.
Old 08-24-12, 10:40 AM
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eoph
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all codes current can be summed up as:
bank 2 rich
stuck in rich
random misfire
bank 2 sensor 1 voltage too high
bank 1 sensor 2 voltage too high
bank 1 sensor 2 voltage too high

If i'm not mistaken, too high usually means short circuit?
Old 08-24-12, 11:21 AM
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eoph
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Also I would be interested to know, where the o2 simulator is tapping power from. A short would probably affect wherever it's tapping from?
Old 08-24-12, 11:21 AM
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Do you have any modifications, or is the car stock?
Do you have a dealership or trusted mechanic close by?
Flashing CEL and misfire are conditions under which you should not be trying to drive your car. It could all end up being a bad electrical connection, or it could get nasty. Rich is better than lean, but if you are running way too rich and it is causing misfires, continual flooding of the system could cause too much gas to get in your oil.
Old 08-24-12, 11:31 AM
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eoph
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I have sikky headers, which is why i'm holding back from taking it to the dealer.
Old 08-24-12, 11:35 AM
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my best guess is ur issue is related to the o2 sim
Old 08-24-12, 11:45 AM
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eoph
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It's been 2 months and I can't resolve the o2 sim issue yet. JE performance whom i bought it from has basically ignored my pm as well. Such customer service
Old 08-24-12, 11:45 AM
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Juanca
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You've had these electric problems for some time already. I don't know if it was caused by splicing wires to install the O2 simulators or the header installation itself, but what I'd suggest is to stop trying anything and take the car to the dealer.


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