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What can I do to correct this code P1127? The car does not accelerate properly but does not stall. It is using more gas than usual. I replaced the Mass Air Sensor a few months ago. Any ideas?

Vehicle: 2000 Hyundai Elantra 2.0L

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HI there

I would double check the mass air flow sensor and also check the catalytic converter for blockage. The one right off the exhaust manifold will sometimes plug up and act just like the maf sensor is bad. Also,, if the timing is off it will run like this as well.

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