TC Lock and Black Max - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 12-07-2010, 06:20 AM Thread Starter
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TC Lock and Black Max

Installed the black Max 3 weeks ago and WOW! this thing is sweet. I have about
3k miles on it now and have noticed the last few days that the trans(?) is getting hung up right before the TC locks up. The TC is set to lock around 55/60mph. IT seems that right before the lock the trans is confused on where to go.

I do alot of highway driving (75%) should i lock the TC up earlier? It also seems like a pretty hard shift between 2 and 3. Any Ideas?

Not sure if it in my signature
2008 job 1 4X4 CC
6in fabtech on 35x13.50 R20
Black Max
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post #2 of 4 Old 12-07-2010, 08:06 AM
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do you have the firm or race shift patterns loaded? does it only do this with partial acceleration or at WOT?

-Adam
2008 Dark Shadow Grey F250 CC SB
Mini Maxx(KEM tuned), S&B, 4'' DP, 5" Straight Pipe, CS IC Pipe, Readylift w/ 35x12.50 toyos on black 20's, OUO traction bars & blocks, Westin Black Bull guard w/ KCs, UWS Toolbox

2011 F250 KR CC FX4 3.55 rear, AFE Intake SOLD
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post #3 of 4 Old 12-07-2010, 08:22 AM Thread Starter
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I think I have the firm shifts loaded I will have to check, had a shop do the install. I have noticed this with partial acceleration, but want to say it happened on the hot tune two nights ago at WOT.
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post #4 of 4 Old 12-07-2010, 10:58 AM
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Ok, then you have the stock settings. Yes, your mini maxx is on a firm setting. I had the same problem until I went to race shifting. The race shifting never misses, but it will shift very firm if you don't have traction/ladder bars.

-Adam
2008 Dark Shadow Grey F250 CC SB
Mini Maxx(KEM tuned), S&B, 4'' DP, 5" Straight Pipe, CS IC Pipe, Readylift w/ 35x12.50 toyos on black 20's, OUO traction bars & blocks, Westin Black Bull guard w/ KCs, UWS Toolbox

2011 F250 KR CC FX4 3.55 rear, AFE Intake SOLD
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