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Random Misfire Help

Discussion in '2nd Gen Tundras (2007-2013)' started by AZ5.7, Mar 24, 2024.

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Mar 24, 2024 at 4:11 PM

#1

#1
AZ5.7 [OP] New Member

Joined:

Mar 24, 2024

Member:

#114217

Messages:

1

Hi Friends,

I have the following problems on my 5.7 Tundra...
-P0101 - mass air flow circuit range/performance problem
-P0300 - Random/Multiple Cylinder Misfire Detected
-low power
-gear searching

I have replaced mass airflow sensor, oxygen sensor, and spark plugs recently. Cleaned the air intake and changed filter. All of the fuses are intact and powered.

I did get my catalytic converter stolen a couple months prior to this issue occurring and the insurance replaced it with a cheap aftermarket one despite my protests. I thought this might be the issue, but I did a backpressure test upstream of both cats and the pressure was fine (I was using a cheap harbor freight gauge and I am thinking of trying again with a nicer gauge).

Does anyone know what else I could do to troubleshoot this issue?

Thanks!

AZ5.7, Mar 24, 2024

#1

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