One minute truck is running fine, next the service engine light starts flashing, no exceleration and popping noises and can't get above 1200 rpms. Pull over let sit for a bit then only light is on and no symptoms for awhile then it starts all over. Weather is damp.
and can't get above 1200 rpms. Pull over let sit for a bit then only light is on and no symptoms for awhile then it starts all over.
The engine is probably is in fail safe mode at 1200 rpm's. the engine will limit its rpm to protect it self if the computer recognizes a potential engine malfunction. Yellow light is caution, red light is severe damage. All modern vehicle have a rev limiter when its an a critical stage. by your description the motor is going rev limitations to protect itself. lack of oil? lack of coolant?
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