Q: Truck won't idle stalls reduced engine power is on

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Truck went to idling rough then stalled didn't want to start then finally started and died again, tried again started reduce engine power message and was idling at higher rpms than normal, replace fuel pump and filter still same issue, check engine light is on and still reduced engine power...what could be wrong?

My car has 230000 miles.
My car has an automatic transmission.

Hi There, Generally, the check engine light comes on when something fairly serious is going on with the vehicle. This can happen for many different reasons such as a faulty mass air flow sensor, a faulty O2 sensor, a bad catalytic converter, bad spark plugs or spark plug wires and many other reasons. Due to the wide range of possibilities for the check engine light to come on, the best and most efficient way to narrow down the scope of what may be causing this is to have the vehicle hooked up to a scanning tool to download any potential fault codes that may have registered in the computer. This will allow a mechanic to determine more specifically what to look for in diagnosing your vehicle. I would recommend having an expert from YourMechanic come to your location to take a look at your vehicle to determine what may be causing your check engine light to come on.

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