LBZ: EFI lIve and Reduced Engine Power

JCM5

New member
May 28, 2015
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OK, Truck goes into reduced engine power only on a damp day and some times even before I leave the driveway.

Also no codes are set.

Were is the reduced engine power message coming from? Can this be seen on efi live?

Can this message be changed - I seen efi live customized there display.

More importantly what should I be monitoring?

All stock truck, only changed air filter to Wix. Not sure if this is it or not. Also cleaned the Mass air flow sensor with cleaner.

Im looking for what would set off the display and were is it in EFI live.

Or what should I be looking for.

I checked alot of connections looking for dampness getting in and checked the Pedal connectors in the cab also.

Thx