I have a Suncoast V by NADP's Trans Shop. I get random hard shifts, usually when it's colder but not always. Most often its from second to first rolling to a stop sign. Is this normal, I mean jerk me forward hard. Also takes a while to get out of first when it's colder too. I just want to make sure I am pro active. It is only I think 6 or so months old and if there is a problem I want to address it while I still may get warranty. Thanks for the help.
Allison 6sp: Random Hard Shifts
- Thread starter 8lug
- Start date
You waited too long for the spin on change. Should be change every 10K maximum. The more aggressive you drive, the more often you need to change it.
How often you say you need to add ATF when you change the spin on? Or would I not need to even worry about it with the Alli deep pan
done three changes on mine since mike has done my trans and ive yet to see a drop in fluid level
Whats wrong with dropping the spin on and cleaning the magnet keeping a quart of your choice of fluid around ,fill the filter, stick the clean magnet on it after lubing the o-ring and spin the new one on? 
Whats wrong with dropping the spin on and cleaning the magnet keeping a quart of your choice of fluid around ,fill the filter, stick the clean magnet on it after lubing the o-ring and spin the new one on?
X2
Whats wrong with dropping the spin on and cleaning the magnet keeping a quart of your choice of fluid around ,fill the filter, stick the clean magnet on it after lubing the o-ring and spin the new one on?
The ole pre oil filter trick :banghead: didn't even think of that
If you do talk to NADP good luck on the warranty. I had mine done about 2.5 years ago and had the same thing in the 3-4 upshift (would do like a double shift and then bang hard into 4th). When I talked to them like two or three months later about cause I initially thought it was just learning but it never got better and has not ever gotten better they told me that is the way it was and there was nothing they could do about it. I have never gone back to them and if I ever get the money to built a engine, I will have the tranny redone (this will all be done by Ted at MPL). There have been a few other cases of NADP trannies that have been doing the same thing!! I would try them and if they do nothing talk to Ted at MPL and have it looked at and then try and get money out NADP but I doubt anything good will come from them!
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