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Mar 31, 2007 | 07:55 PM

hodgekuter

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From: Kentucky

Important question.

I have an '05 PSD6.0, F250, Torkshift, cruise control, 4WD,etc. I am having an issue with the torque converter not staying locked up when towing on flat land roads amd the torkshift shifting down into a higher gear at every little grade or just about any minor elevation change. When on a flat road surface, and I let off the pedal to avoid running up on a vehicle, the engine speed drops right off, down by 400-500 rpm and stays there 'til a slight change in elev., when it all of a sudden swings up by 500 -650 rpm, grabbing the transmission gear and winding up to about 2500 or so, then it eases back and stays OK 'til the next event. I am open for any suggestion, Please. I want to get this condition corrected before warranty expires (32160 mi.) on truck now. Have had cruise reprogrammed, but I feel it could be the torque converter. It pulls great, but it free-wheels all the time, when not really pulling hard. My old '01 would stay locked right in 'til I got down to about 35 mph before you could feel it disengage. Has any one else experienced this ??

Thanks
Bill in KY

Mar 31, 2007 | 09:14 PM

bigredtruckmi

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From: Huntington Indiana

I would take it in immediately before the 36 k warranty runs out (you have 100K on engine) Present this info to the tecks and let them run a diagnostic on the truck. Also is the tow haul on or off?

Mar 31, 2007 | 10:20 PM

fordmark

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Have the same truck and the same problem. Little under 30k and looking for an answer.

Mar 31, 2007 | 10:43 PM

hodgekuter

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From: Kentucky

The tow/haul can be on or off, it still acts the same way.

Bill in KY

Apr 1, 2007 | 02:24 AM

dc3655

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From: Fallon,NV

I have the same truck and was having the same problem when towing larger trailers. I was worried it was the torque converter also. I then installed a towing module that didn't even adjust the tranny, but I will say that hauling those same trailers the truck rarely wants to downshift now (not to mention that I'm getting over 1mpg better towing now). I'm not saying that getting a tuner is the way to go, but I do think that Ford has the tranny set to downshift as a safety feature to keep the line pressures up. If you do take the truck in and they have a legitimate way to reprogram the tranny, let us know as I'm sure that most people are having this problem if they are pulling big trailers.

Apr 1, 2007 | 05:26 AM

npccpartsman

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Joined: Dec 2003

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From: Stuttgart, Ar

It's pretty normal for this transmission to do this. Mine has done it ever since new towing or not. I remedied it with an SCT and had the torque convertor locked with programming.

Apr 1, 2007 | 07:59 AM

hodgekuter

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From: Kentucky

Where did you have your work done or did you do it yourself. I had a Hypertech PPIII in my '01 and it worked good. Different situation, but worked well.

Thanks
Bill in KY