transmission hard shift 1-2
#1
02-11-2015, 08:49 PM
transmission hard shift 1-2
Hello all,
I had my truck at the dealer (2013 ecoboost limited )to repair the thump on the drive shaft.. everything is fine now, but I think they did some update on my transmission also, not sure why, but now on slow traffic when the truck shifts from 1-2nd I can feel a hard shift and a light lurch, this is only on slow traffic, can my transmission be reprogramed as it was before? what can I do.
thank you
I had my truck at the dealer (2013 ecoboost limited )to repair the thump on the drive shaft.. everything is fine now, but I think they did some update on my transmission also, not sure why, but now on slow traffic when the truck shifts from 1-2nd I can feel a hard shift and a light lurch, this is only on slow traffic, can my transmission be reprogramed as it was before? what can I do.
thank you
Last edited by solrac6262; 02-11-2015 at 09:03 PM.
#2
02-11-2015, 09:41 PM
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#3
02-12-2015, 08:43 AM
#4
02-12-2015, 10:45 AM
The service advisor should have informed you about the transmission's adaptive learning and the need for the post flash cycle.
Excerpted from the F-150 service manual ...(what the tech' should have done as per the TSB)
Excerpted from the F-150 service manual ...(what the tech' should have done as per the TSB)
Section 307-01-3 | Automatic Transaxle/Transmission — 6R80
Road Test — Adaptive Drive Cycle
The transmission fluid must be at operating temperature before proceeding to this step.
Drive the vehicle on a level road surface performing the adaptive drive cycle.
1.Accelerate from a stop with light throttle to 24 km/h (15 mph) then release the accelerator pedal.
2.Gently brake and bring the vehicle to a stop and hold the brake for 6 seconds.
3.Repeat substeps 1 and 2 an additional 5 times.
4.Accelerate from a stop with light throttle so the 1-2, 2-3 and 3-4 shifts occur with engine rpm between 1,700-2,000.
5.Continue accelerating until the vehicle speed reaches 80 km/h (50 mph) or the 5-6 upshift is reached.
6.Gently brake and bring the vehicle to a stop and hold the brake for 10 seconds.
7.Repeat substeps 4, 5 and 6 an additional 3 times.
Road Test — Adaptive Drive Cycle
The transmission fluid must be at operating temperature before proceeding to this step.
Drive the vehicle on a level road surface performing the adaptive drive cycle.
1.Accelerate from a stop with light throttle to 24 km/h (15 mph) then release the accelerator pedal.
2.Gently brake and bring the vehicle to a stop and hold the brake for 6 seconds.
3.Repeat substeps 1 and 2 an additional 5 times.
4.Accelerate from a stop with light throttle so the 1-2, 2-3 and 3-4 shifts occur with engine rpm between 1,700-2,000.
5.Continue accelerating until the vehicle speed reaches 80 km/h (50 mph) or the 5-6 upshift is reached.
6.Gently brake and bring the vehicle to a stop and hold the brake for 10 seconds.
7.Repeat substeps 4, 5 and 6 an additional 3 times.
#5
02-12-2015, 02:08 PM