TURBHOE

iTrader: (4)

what couses the reduce power thing to come on and shut off my truck i tryied to turn the maf back on this morning and now the truck runs like *** so i disabled it again but still runs like *** and it died earlier and said reduce power. WTF please help.

whitt1

Check your TPS sensor on the throttlebody.Either the commection is loose or the sensor is bad.

white1

iTrader: (5)

Isnt the tps sensor integrated with the tb on the drive by wire tb's? I ported and polished a friends tb on his 03, and the tps screwed up. He had to get a new tb because it kept going into reduced power mode. we had to push it up his driveway.

Kano

iTrader: (3)

mine set a 1514 code and kept going into this mode

might want to scan for this code and then up the table if this is the prob

The table is under engine diag>general>calculated airflow1514 error

may not be your prob but worth looking at

TURBHOE

iTrader: (4)

well i reran the tune and it fixed what ever the problem was there but i have another and i'll put that in the tune section and put a link to it.
https://www.performancetrucks.net/fo...81#post3259081

budhayes3

iTrader: (19)

My crank variation relearn was so far off once (after a PCM swap), that the "reduced engine power" message came up. Truck would barely idle and ran like it had a misfire until I had the relearn done.

TURBHOE

iTrader: (4)

thats one thing i haven't got to do yet but it was running dead on just two days ago then it just started suking after i tried to turn the maf on the i disabled it again but it still sucks.

CHarris

iTrader: (5)

I've had reduced power mode flash on my dash three times or so IMMEDIATELY AFTER a new tune was inserted. In every case, I reflashed the PCM and it went away. Don't know it this is your issue, but it might work. Try a reflash and see what happens.

TURBHOE

iTrader: (4)

yeah the reduce power went away with the retune and i think i bout got the idle worked out i just think there are some hedden table i can't find that effect the timming during idle