Is there any notification of when this kicks in? I have had my 13 AV with the 5.3 since January and have not noticed a change when or if this activated. Not sure if previous owner de-activated it or what.
One thing I have noticed was a flat spot when driving along at say 45 or 50 and after applying a small amount of pedal pressure NO noticeable change in RPM of speed. A little more pressure would result in the same response until I applied enough pressure down on the pedal so the AV drops a gear and rpm's pick up. At 70 K I thought it may need a bit of cleaning so I cleaned out the throttle body, MAF and added a new air filter, AEM dry and not much change. Then I added a bottle of Amsoil PI to the tank and NOW I really see acceleration with a small amount of pedal pressure.
My engine is stock and will keep it that way but this Active Fuel Management has me wondering if it is working.
One thing I have noticed was a flat spot when driving along at say 45 or 50 and after applying a small amount of pedal pressure NO noticeable change in RPM of speed. A little more pressure would result in the same response until I applied enough pressure down on the pedal so the AV drops a gear and rpm's pick up. At 70 K I thought it may need a bit of cleaning so I cleaned out the throttle body, MAF and added a new air filter, AEM dry and not much change. Then I added a bottle of Amsoil PI to the tank and NOW I really see acceleration with a small amount of pedal pressure.
My engine is stock and will keep it that way but this Active Fuel Management has me wondering if it is working.