Is this suppost to happen?

[Galant]

I have the code p0141 my short term fuel trims are at 24.9 and my long term fuel trims stay at 0. Arent my longterm fuel trims suppost to change in accordance to the shrt term?

Topic

[Timothy Salomon]

Yes, on my vehicles, if I have an elevated short term fuel trim, I will soon get an elevated long term fuel trim too.
If I start driving, and the fuel trim moves between positive and negative( deccellerating) long term trims get closer to zero, but they shouldn’t stay at exactly 0.0

[Galant]

Thanks for replying, i ran my car for 30 min and drove it a bit and the long term fuel trims never set they stay at 0. My short terms are still apparently maxed out. I know i have p0141 (bank 1 sensor 2 malfunction) so i have a new sensor coming in. Could it be beacuse my downstream sensor on bank 2 is bad that my long terms are never being set?

My car is idling like crap i checked everything the only thing suspicious is the fuel trims.

[Timothy Salomon]

I don’t know much about this. But I wonder if that is how your car operates if it’s stuck in open loop, unable to get o2 sensors readings?

[Author]

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