TorqShift Tranny Questions
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Senior User
Joined: Jan 2004
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From: South of Tucson
TorqShift Tranny Questions
My 2006 PSD seems to shift slow in second gear. I cant figure if it is from 1st to 2nd or 2nd to 3rd. It just seems slower than it should be. I have 20K miles on it mostly stock with a MBRP turbo-back with no cat. Has any of you noticed similar behavior? I notice this most of the time, towing or not.
I towed this weekend and I was coming down some hills in TOW HAUL and the truck would down shift and run up the RPMS to well over 3000 RPMS. Is this ok? Should I be protecting the engine from hi-RPMS when going down hill?
Thanks,
Dave
I towed this weekend and I was coming down some hills in TOW HAUL and the truck would down shift and run up the RPMS to well over 3000 RPMS. Is this ok? Should I be protecting the engine from hi-RPMS when going down hill?
Thanks,
Dave
Jäger
Joined: Jan 2005
Posts: 5,491
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From: Northern Arizona
Do you mean the rpm's are higher than before when it shifts from 1st to 2nd? Or it flares between gears? You may want to try the 'TorqShift relearning' trick as noted in the Tech Folder sticky at the top of this forum. That will reset the transmission strategy and may fix that issue.
The tow/haul works like that, when you apply the brake descending a grade it will downshift to help slow you down. Tap the throttle once or twice and it will upshift.
The computer won't downshift unless the rpm's are at a safe level. Sure would have been nice to have an actual 'red line' on the tachometer, huh?!
The tow/haul works like that, when you apply the brake descending a grade it will downshift to help slow you down. Tap the throttle once or twice and it will upshift.
The computer won't downshift unless the rpm's are at a safe level. Sure would have been nice to have an actual 'red line' on the tachometer, huh?!
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Senior User
Joined: Jan 2004
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From: South of Tucson
I think it flares between gears. I start out and RPM's go up and then when it shifts thre RPM's drop and stay flat for about a second or two before the RPM's start slowly climbing again. Its not a firm shift, feels like the tranny is slipping. Its not real bad just makes me wonder if something needs adjusting.
I will try the TorqShift relearning trick and see if that helps.
I will try the TorqShift relearning trick and see if that helps.
Cross-Country
Joined: Mar 2005
Posts: 75
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From: Mi
Trans
When was the last time you had the trans serviced. I had mine serviced and at the same time told the dealer I would do the small filter up front. I didn't get to it for a couple of months. I developed a shift flare on the 2-3 shift( rpm's go up between shifts) Well I finally got around to the front filter and now I don't have the flare. I only have 28000 but I do tow heavy. The filter was very black. So maybe that is worth a try. Hope this helps...........
Bob C
Bob C
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From: Wickenburg, AZ
Ford says Fluid & Filter every 30k, I believe. It requires special fluid, Mercon SP. So far it's only available at Ford.
I don't think having it run to 3,000 is a problem. It is deadrolling the engine at that point anyway, so the stresses whould be a lot less right off the bat. Kind of unnerving the first few times you have it do that with Tow/Haul, though. Apparently, they're built to take it and it's normal. The governor cutoff on the engine is 4,000 rpm, and the bottom end is tough as nails in these things, if that's any comfort. I'm sure that the Torqshift won't let you overspeed the engine.
I don't think having it run to 3,000 is a problem. It is deadrolling the engine at that point anyway, so the stresses whould be a lot less right off the bat. Kind of unnerving the first few times you have it do that with Tow/Haul, though. Apparently, they're built to take it and it's normal. The governor cutoff on the engine is 4,000 rpm, and the bottom end is tough as nails in these things, if that's any comfort. I'm sure that the Torqshift won't let you overspeed the engine.
Last edited by Cowboy Brett; Apr 5, 2007 at 02:31 AM.
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Jäger
Joined: Jan 2005
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From: Northern Arizona
I tow my trailer about 20% of the time so I had the trans flush done at 20K. Make sure they change the external filter because that one gets the majority of dirt. The internal 'filter' is a screen and should be changed every other fluid flush.
The external filter (FT-145) is very easy to change, takes about 5 minutes. It's in an aluminum housing under the right side of the radiator, where the steering damper connects to the frame.
Sounds like you should consider a fluid change. When you take it in to get changed/flushed, ask the Service Manager if they have a heated flush machine as that works best for the TorqShift due to the internal thermostat. You can't get all the fluid out doing it yourself because of that thermostat. It keeps fluid from flowing into the trans cooler until it reaches a certain temp, I think 160 degrees.
It's an expensive tranny so IMO it's worth it to change the fluid a little earlier than 30K.
The external filter (FT-145) is very easy to change, takes about 5 minutes. It's in an aluminum housing under the right side of the radiator, where the steering damper connects to the frame.
Sounds like you should consider a fluid change. When you take it in to get changed/flushed, ask the Service Manager if they have a heated flush machine as that works best for the TorqShift due to the internal thermostat. You can't get all the fluid out doing it yourself because of that thermostat. It keeps fluid from flowing into the trans cooler until it reaches a certain temp, I think 160 degrees.
It's an expensive tranny so IMO it's worth it to change the fluid a little earlier than 30K.
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From: New Jersey
As the others said, try the relearn first on the shift problem. If that doesnt help take it in let the dealer check it out and document the complaint, especially if it's still under warranty. As far as the 3K going down hill, thats normal. Real normal if you are going down a steep hill with alot of weight pushing behind you. These things are real smart and can figure out by your speed, throttle position and braking how much engine braking you need to help out. If you did the same hill in tow haul, without a load, you would not see the rpms get that high as the truck would not need to drop that extra gear.
Mountain Pass
Joined: Jun 2004
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From: Left Coast
While we're on the Torqshift topic does the torque converter ever lockup in 4th gear? Seems to me that driving at 35-40 mph and above that it would be nice to have a lockup 4th for economy. Would a SCT tuner make it lockup in more than just 5th?
Fleet Owner
Joined: Nov 2003
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Originally Posted by Cowboy Brett
Ford says Fluid & Filter every 30k, I believe. It requires special fluid, Mercon SP. So far it's only available at Ford.
I don't think having it run to 3,000 is a problem. It is deadrolling the engine at that point anyway, so the stresses whould be a lot less right off the bat. Kind of unnerving the first few times you have it do that with Tow/Haul, though. Apparently, they're built to take it and it's normal. The governor cutoff on the engine is 4,000 rpm, and the bottom end is tough as nails in these things, if that's any comfort. I'm sure that the Torqshift won't let you overspeed the engine.
I don't think having it run to 3,000 is a problem. It is deadrolling the engine at that point anyway, so the stresses whould be a lot less right off the bat. Kind of unnerving the first few times you have it do that with Tow/Haul, though. Apparently, they're built to take it and it's normal. The governor cutoff on the engine is 4,000 rpm, and the bottom end is tough as nails in these things, if that's any comfort. I'm sure that the Torqshift won't let you overspeed the engine.
http://k-mansparts.com/items/ford-di...qsp-detail.htm
Elder User
Joined: Apr 2004
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From: Wickenburg, AZ
Wow! Thanks for the heads up on the Mercon SP deal, bismic.
I'm pretty certain that it has the capability to lock the torque converter in any gear. That's part of how tow/haul works. That being said, I don't know what Ford has written in terms of software for lockups while the engine brake routine is not in operation.
I'm pretty certain that it has the capability to lock the torque converter in any gear. That's part of how tow/haul works. That being said, I don't know what Ford has written in terms of software for lockups while the engine brake routine is not in operation.
Elder User
Joined: Apr 2004
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From: Wickenburg, AZ
Originally Posted by Casey
The torque converter can only lock in 4th and 5th gear. Tow/Haul works just fine without the torque converter locked.
Incidentally, is it really true that there are six possible forward gears on these? That comes up quite a bit on here and elsewhere in articles on the 'net. It would seem to me that they would have marketed it as 6 if it had 6, but you never know.
Postmaster
Joined: Apr 2004
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From: Bossier City, LA
Originally Posted by Cowboy Brett
Incidentally, is it really true that there are six possible forward gears on these? That comes up quite a bit on here and elsewhere in articles on the 'net. It would seem to me that they would have marketed it as 6 if it had 6, but you never know.