shift points
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Senior User
Joined: Sep 2005
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shift points
i know every one has different shift points because of different tire sizes and mods but what are the factory shift points (mph)
mine seems to shift when it feels like it
if i'm being a little more agressive (i never just mash it to the floor and hold it) it shifts better
if i'm babing it it holds and runs the rpms up to 22 or 23 at 40 mph
what gives........i think this thing has a mind of its own
2000 ext cab, lwb, AIS , Muffler delete are my only mods
mine seems to shift when it feels like it
if i'm being a little more agressive (i never just mash it to the floor and hold it) it shifts better
if i'm babing it it holds and runs the rpms up to 22 or 23 at 40 mph
what gives........i think this thing has a mind of its own
2000 ext cab, lwb, AIS , Muffler delete are my only mods
Posting Guru
Joined: Dec 2004
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The shifting on mine improved dramatically when I installed a Factory Tech accumulator valve body. It's pretty much the same as replacing the Sonnax valve and springs, but the sonnax and springs are MUCH cheaper.
I highly recommend that mod.
I highly recommend that mod.
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yea i'm going to put the Sonnax in next fluid change but i would like to know at what point i should be looking for a shift
like i said mine seem to be all over the place especially since i'm running 35's
like i said mine seem to be all over the place especially since i'm running 35's
Last edited by bhiggins; Nov 14, 2005 at 12:39 PM.
Butt-Head
Joined: Apr 2004
Posts: 9,415
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From: Reed Point, MT
Factory shift points:
Light throttle with 3.73 in OD range
1-2..................11-13
2-3..................19-21
3-4..................36-39
Wide open with 3.73's:
1-2..................25-27
2-3..................47-51
3-4..................72-76
If you have 4.10's and light throttle:
1-2.......8-9
2-3.......18-20
3-4.......48-56
Wide open:
1-2........23-25
2-3........43-46
3-4.......65-69
Of course, everyone's definition of "light throttle" is different, but these are Ford's specifications for 1.25 volt throttle position voltage. Also tire size will play a part as you mentioned....but it will be ACTUAL speed as the computer still thinks it's running at INDICATED speed.
Cody
Light throttle with 3.73 in OD range
1-2..................11-13
2-3..................19-21
3-4..................36-39
Wide open with 3.73's:
1-2..................25-27
2-3..................47-51
3-4..................72-76
If you have 4.10's and light throttle:
1-2.......8-9
2-3.......18-20
3-4.......48-56
Wide open:
1-2........23-25
2-3........43-46
3-4.......65-69
Of course, everyone's definition of "light throttle" is different, but these are Ford's specifications for 1.25 volt throttle position voltage. Also tire size will play a part as you mentioned....but it will be ACTUAL speed as the computer still thinks it's running at INDICATED speed.
Cody
Senior User
Joined: Oct 2001
Posts: 273
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From: New Mexico
I installed the Sonnax valve and springs and my shift points have not changed at all. I'd like to shift into Overdrive around 39mph.
Light throttle with 3.73 in OD range
1-2..................11-13
2-3..................20-24
3-4..................41-43
Jeff in NM...OUT
Some call it a 6-pack, I call it a support group.
Light throttle with 3.73 in OD range
1-2..................11-13
2-3..................20-24
3-4..................41-43
Jeff in NM...OUT
Some call it a 6-pack, I call it a support group.
Thread Starter
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Senior User
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turn OD OFF ?
So really i'd be ok to turn OD off in town (ie less than 55 actual speed) to keep it from jumping into and out of OD?
or would is it better to let it go to OD and run 13-1400 rpms? which is better on my tranny and good for my pocket book with fuel prices the way they are? as long as i don't let it rev above 2000 rpms
or would is it better to let it go to OD and run 13-1400 rpms? which is better on my tranny and good for my pocket book with fuel prices the way they are? as long as i don't let it rev above 2000 rpms
Senior User
Joined: Oct 2005
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From: Utah for now
I run mine around town without OD; no more than 50mph. If I get into the 55mph range, I will turn the OD on. My egts stay lower if I run without OD around town, and doesn't hurt my fuel economy running around 17-1800 rpms. Plus it is nice not switching back and forth into OD with the speed of traffic varying so much. Also, it hasn't affected my tranny's performance.
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Post Fiend
Joined: Jul 2005
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From: 21791
yep, my tranny shifts into OD as soon as it can, and thats right around 43mph. even under moderate to heavy throttle, the tranny will start out in 1st, rev to about 2600, shift to 2200 or so and rev back up to 2500. then when shifting into 3rd, it seems to skip that gear and go straight to OD if i am over 50mph by that time. it is so stupid, going from 2600 rpm to 1500 and then trying to rev back up when youre on the throttle. 
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Butt-Head
Joined: Apr 2004
Posts: 9,415
Likes: 2,910
From: Reed Point, MT
Actually what's happening under light to moderate acceleration is:
1st gear TC unlocked
2nd gear unlocked
2nd gear locked
3rd gear unlocked
3rd gear locked
4th gear locked
You can list my vote under the "I hate the 3-4 shift under 40MPH club". When cold or under heavy acceleration there is a 4th unlocked mode, but not for very long. Also under these conditions, the PCM may see fit to skip locking the TC in 2nd.
Typically if I'm running less than 55 MPH, I will leave the OD off and run in 3rd locked. There is less load on the engine, lower EGT's, and since the TC is locked, virtually no heat is produced in the transmission.
Cody
1st gear TC unlocked
2nd gear unlocked
2nd gear locked
3rd gear unlocked
3rd gear locked
4th gear locked
You can list my vote under the "I hate the 3-4 shift under 40MPH club". When cold or under heavy acceleration there is a 4th unlocked mode, but not for very long. Also under these conditions, the PCM may see fit to skip locking the TC in 2nd.
Typically if I'm running less than 55 MPH, I will leave the OD off and run in 3rd locked. There is less load on the engine, lower EGT's, and since the TC is locked, virtually no heat is produced in the transmission.
Cody