2000 T4R Tranny Issues

massey74

New member
Hey Everyone,

I have an issue with my tranny that is starting to make me nervous. First off, I have a 2000 T4R Limited, 4WD, auto-transmission, no mods. I just passed 142K miles, and the transmission was serviced (by me) at 138K by referencing a write-up from this site as well as the Haynes manual. I dropped the pan, replaced the filter, and flushed the system. The fluid level is fine, and there are no leaks.

About 2 weeks ago I started to notice that when I start the rig cold, the first time I accelerate the transmission won't shift from 2nd to 3rd gear unless I mash the gas and get the RPMs up around 2500-2700. After reaching the high RPMs there is a rough shift into 3rd gear. After the tranny shifts from 2nd to 3rd one time, the problem is gone.

Just for clarity, there is no issue shifting from 1st to 2nd gear, and the problem only happens the first time the rig goes from 2nd to 3rd gear after a cold start. After that, the tranny shifts smooth in all gears, at a much lower RMP, without having to stomp the gas. Also, there is no check engine light or any other light.

I called a local dealership and an indipendent transmission shop and got mixed avice. Of course, both said I should just "brig it on in and let them have a look." The only problem is, if I drive it there, by the time they climb in to diagnose the problem, it will be gone. One told me it could be a solenoid or the computer. The other told me it could be a valve or a bad tranny. Has anyone had a similar issue or know anyone who has? I'm VERY limited on funds, so I can't really afford to spend a lot of money trying to figure out what the issue is. And if its something I can do myself I would probably go that route. Thanks in advance for any insight.
 
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Mine has done the same thing since the day I bought it... Does this mean it's normal? I don't know, but it has never bugged me or triggered the "what the hell is wrong with this thing?" dialog...
The way I see it, it is trying to stay in a lower gear until the fluids warm up.?. If you let it warm up in your driveway, it will shift "normally".
If you find out this is indeed NOT "normal", let me know, but like I said mine has done this for the forty-some thousand miles I have put on it.
 
That is the cause, cold fluids. The transmission is electronically controlled to shift at higher rpm to heat up the fluids. Letting the truck idle in the driveway does nothing for transmission temps though. All it does is slowly heat the engine up to temp.
 
Searching would have brought you the answer to this oft-asked question.

One of two things must occur for the first shift from 2-3. RPM above 2600, or coolant temp above 130F. If either of those are met, it'll shift. You don't have to hammer on it past 2600 RPM to get it to shift, just accelerate normally. That should ease the "rough" shift you're feeling.
 
Thanks for the replies. The only reason this is causing me to feel concerned is that the truck just started to do this. Before a few weeks ago it would shift at a lower RPM, between 2000-2200, which to me was a very noticeable difference. I guess she may just be developing some quarks in her old age.
 
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The shift point is controlled by the ECU, and 2000-2200 is too low. So to me, it's now acting "normal". :-)
 
I agree, it's completely normal. Mine didn't do it for the 1st 5 years I owned it but it has done it for the last 5 years or so. Not anything to worry about, but if you don't want any problems with your tranny, I would stop hammering the gas to force it to shift cold.
 
I appreciate everyone's input. I guess I feel better knowing that other people have the same experiance with their rigs. I'll try to keep my lead-foot under control to minimize the rough shifting. Hopefully this baby will last me for many years to come.
 

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