Delayed upshift after passing
#1
Delayed upshift after passing
02 4x4 XLT SC 4.6L 4spd auto - no mods
Passing a little old lady on the highway yesterday - I romp on the gas, trans downshifts to second (spooled up to 4 grand or so). I get around grandma and let off the gas - but it took about 3 seconds after letting off for the trans to upshift; skipped third and went directly to OD. Truck lurched pretty hard on the upshift.
Does the auto trans usually take so long to upshift after getting off the gas at high RPM?
Any comments or suggestions would be appreciated.
Should have gotten the 5.4L.
Diamond Dan
Passing a little old lady on the highway yesterday - I romp on the gas, trans downshifts to second (spooled up to 4 grand or so). I get around grandma and let off the gas - but it took about 3 seconds after letting off for the trans to upshift; skipped third and went directly to OD. Truck lurched pretty hard on the upshift.
Does the auto trans usually take so long to upshift after getting off the gas at high RPM?
Any comments or suggestions would be appreciated.
Should have gotten the 5.4L.
Diamond Dan
#3
There wasa thread about a week or two ago talking about such downshifts and upshifts and the delays and such. I wll try to find it but look through the tranny forum here.
I would say what happened is normal and didn't cause any harm. To put it simple you accelerated, truck downshifted and revved up, computer starts planning when and how to shift back up, you get pass grandma and let off, truck was still planning for that 4K RPM plus shift that happened at a lower RPM. SO it sort of slams into gear (I call it a bang shift).
I could be tottaly off base here, but it's a thought.
I would say what happened is normal and didn't cause any harm. To put it simple you accelerated, truck downshifted and revved up, computer starts planning when and how to shift back up, you get pass grandma and let off, truck was still planning for that 4K RPM plus shift that happened at a lower RPM. SO it sort of slams into gear (I call it a bang shift).
I could be tottaly off base here, but it's a thought.
#4