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torqueshift issues

Old Apr 10, 2010 | 04:03 PM
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torqueshift issues

truck in signature. today my tranny started dropping out of gear while driving. basically feels like you are going then you put the tranny in neutral then drop it back in slamming it into gear. this is happening 2-3 times then it was acting fine. i havent changed the tuning any since september. after having the issues i changed to a towing program with the same results then returned to stock same deal. i then when driving home i guess ive lost 6th gear. havent had any issues till today. ive got 120ish on the truck. as i said earlier no codes via sct, 170-180 tranny temp (via gauge) no lights flashing, factory gauges reads normal tranny fluid looks clean and doesnt smell burnt. any body have any ideas?
 
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Old Apr 10, 2010 | 04:47 PM
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Reset the computers (think there is a thread on how to clear the tranny memory) and start over.
 
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Old Apr 10, 2010 | 05:24 PM
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It couldn't hurt as gearloose says...perform the torqshift and vgt relearns...and clear the capacitors memory....should take about 10 minutes...load test your batteries while you're at it and clean the terminals. Hope its nothing serious. When was the last tranny fluid change and external filter change?
 
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Old Apr 10, 2010 | 05:41 PM
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From: Lubbock
40k ago
already have the batteries disconnected. loosk like there is not alot of tq shift issues.. solenoids are the biggest problems short of a full build
 
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Old Apr 10, 2010 | 06:25 PM
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Originally Posted by Lubbockguy1979
40k ago
already have the batteries disconnected. loosk like there is not alot of tq shift issues.. solenoids are the biggest problems short of a full build
You are over due by 10,000. Was the external filter changed and have you ever had the tranny flushed.
 
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Old Apr 10, 2010 | 06:34 PM
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External was replaced. Never been flushed, just the fluid changed.
 
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Old Apr 10, 2010 | 06:41 PM
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Originally Posted by Lubbockguy1979
External was replaced. Never been flushed, just the fluid changed.
You didn't state how many miles are on the truck.
 
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Old Apr 10, 2010 | 07:00 PM
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120k it shifts 1-2 3-5 hard going to 5th and no 6th gear. Also noticed a little bit of the reverse shutter. I'm thinking it going to be the solenoids from what I've read so far
 
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Old Apr 10, 2010 | 07:03 PM
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Could be. If it was never flushed you could be SOL.
 
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Old Apr 10, 2010 | 07:27 PM
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unhooking batteries did absolutely nothing. noticed it shuddering in reverse which seems is another sighn for the solenoids. the tranny has worked flawlessly with zero issues till today. at this point bought the truck with 83k and dont know if the tranny was serviced i serviced the tranny and dont tow often so in my opinion the fluid is not much of a issue since it is clear and smells ok. flushing a high milage tranny is a bad idea. so i will change the fluid but flushing it is out of the question
 
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Old Apr 10, 2010 | 07:54 PM
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What is the cost to get a rebuilt transmission?
 
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Old Apr 10, 2010 | 08:01 PM
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I can get a 09 tq shft with 14k for $1600 or less. Pretty sure I can use the 6.4 flywheel and stock 6.4 converter. If I do have to replace/ rebuild ill go that route since it is improved over mine and cheaper than a built tranny. or a stock rebuild
 
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Old Apr 10, 2010 | 09:17 PM
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Originally Posted by Lubbockguy1979
120k it shifts 1-2 3-5 hard going to 5th and no 6th gear. Also noticed a little bit of the reverse shutter. I'm thinking it going to be the solenoids from what I've read so far
I agree it's sounds like the solenoids... It's not a cheap fix!
 
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Old Apr 10, 2010 | 09:29 PM
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I'm hoping for a cheap fix. From what I've seen $2500+ a t/c is cheap and closer to 5g's for a built panty dropper with a good converter. I doubt ill ever get bigger than maybe 190's and a 66mm turbo. I doubt ill do that. I'd love a faster truck. I just still want to use it. At this point I still need to install studs so if I built the tranny and studs then did a turbo and injectors I'd spend more than selling the truck and getting a 6.4 that would be faster and still usable. I really love the truck but in reality its glass and sheet metal.
 
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Old Apr 11, 2010 | 09:24 AM
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Originally Posted by Lubbockguy1979
unhooking batteries did absolutely nothing. noticed it shuddering in reverse which seems is another sighn for the solenoids. the tranny has worked flawlessly with zero issues till today. at this point bought the truck with 83k and dont know if the tranny was serviced i serviced the tranny and dont tow often so in my opinion the fluid is not much of a issue since it is clear and smells ok. flushing a high milage tranny is a bad idea. so i will change the fluid but flushing it is out of the question
Are you sure only Mercon SP was used in it. SP doesn't smell OK new out of the bottle! As far as the flush, you really don't have anything to lose!
 
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