Transmission Shift Question
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New User
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Transmission Shift Question
With my newly found light foot, I find the transmission shifting into OD at 25 MPH. At times 3rd gear will release, the engine RPMs rise about 300, and then OD will engage. Dealer says this is the nature of the beast; I do not agree. Anyone else have or had this issue? What was the fix?
Dan
07 SCREW 5.4 4x4
Dan
07 SCREW 5.4 4x4
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From: Fort Collins
Mine won't go into OD until around 40, but there are many hills around here...What year is it, and is there another dealership you can go to? They can reflash your PCM, and change your shift patterns..
Fleet Mechanic
Joined: Aug 2006
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From: Phoenix, AZ
mine does that every once in a while. I have to be at the right amount of throttle and speed, any more throttle than normal it'll downshift to 3rd until the speed is higher, any less throttle the speed will drop and downshift to 3rd...
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From: Fort Collins
TCL (Torque Converter Lockup) is what overdrive is about. The truck shifts to third, but not OD.
Senior User
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From: Fort Collins
TCL is what OD is about. My truck will shift to THIRD, but not OD until 40mph or so. The OP said his truck went into OD at 25mph. When he said OD, I assumed he meant TCL, and not third gear.
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The trans shifts 1st,2nd,3rd,tcc,then 4th. and yes, the converter can lock up at 25mph if the computer sees the right load. This is a normal condition and there is no reflash for this condition.
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To clarify the problem - the trans shifts into 4th (OD) at approx, 25mph without the torque converter locking. The torque converter does lock about 40 mph. It feels like the 3rd gear clutch is releasing for 2-3 seconds before 4th engages. You can feel the engine rev and see the tach rise about 200 rpm before 4th engages. Question is - does anyone elses act this way? Is this harmful to the trans for the long term?
Dan
Dan
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Joined: Apr 2008
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From: Fort Collins
To clarify the problem - the trans shifts into 4th (OD) at approx, 25mph without the torque converter locking. The torque converter does lock about 40 mph. It feels like the 3rd gear clutch is releasing for 2-3 seconds before 4th engages. You can feel the engine rev and see the tach rise about 200 rpm before 4th engages. Question is - does anyone elses act this way? Is this harmful to the trans for the long term?
Dan
Dan
I wasn't paying attention, when I replied, quoting YOU as the OP (Original Poster). My apologies.
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Fatalerroz
Do you know what rev. the reflash was? My dealer was able to replicate the problem but could not find anything from Ford that addressed it. It is possible that a reflash would fix the problem and the dealer/Ford not realize it.
Dan
Do you know what rev. the reflash was? My dealer was able to replicate the problem but could not find anything from Ford that addressed it. It is possible that a reflash would fix the problem and the dealer/Ford not realize it.
Dan
Elder User
Joined: Mar 2004
Posts: 616
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From: Florida Parishes, LA
Mine did the same thing to me while I drive in my neighborhood. I drive slow because of all of the kids walking the roads. I never worried about it. I no longer have this issue with my programmer.
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From: Fort Collins
I'll get ahold of it today for you.
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From: Baltimore
Unless I'm going numb as well as deaf mine won't shift into OD or converter lock up until 40 mph. When that happens I get about a 700 rpm drop. If I'm over 40 mph I can push the OD button to take it out of OD and the converter will still be locked. My SD with the 4R100 would lock the converter between 30-35 and OD at 44 mph.
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