Kennedy Diesel
March 12th, 2019, 02:55 AM
I received an SOS call from a guy with the following issue:
07 Silverado 5.3 gas souped up/cammed and custom tuned by unknown with unknown equipment by previous owner
Motor blew
09 5.3 stock installed with the same tuning
Purchased by current owner:
Ran good but idled excessively high and “took off” to approx. 1500rpm once you started to roll out.
Had dealer flash to stock file thinking it would correct it. Now he says it starts but is in “4 cylinder mode”. Not sure if his assessment is correct, or just a limp mode of sorts.
Truck is an hour away so I'll be laptop only. Speculation is that maybe the previous owner dismantled some of the AFM components and as a result may be in a limp mode?
07 Silverado 5.3 gas souped up/cammed and custom tuned by unknown with unknown equipment by previous owner
Motor blew
09 5.3 stock installed with the same tuning
Purchased by current owner:
Ran good but idled excessively high and “took off” to approx. 1500rpm once you started to roll out.
Had dealer flash to stock file thinking it would correct it. Now he says it starts but is in “4 cylinder mode”. Not sure if his assessment is correct, or just a limp mode of sorts.
Truck is an hour away so I'll be laptop only. Speculation is that maybe the previous owner dismantled some of the AFM components and as a result may be in a limp mode?