I have a 2001 dodge reg cab 2wd with the auto tranny only bought about a month ago. It shifts great in the first few gears but the last 2 seems to hold till about 2000rpm and then shift pretty hard. I have checked the alt and am only about .024 ac volts. I am going to clean the grounds anywhere I see them. Fluid still looks brand new, but may replace and put new filter on. Any suggestions or has any one had same type of issues. Thanks to everyone so far for being helpful.

@Me78569 @jlbayes any ideas on this?

Does throttle position seem to change anything about how / where it shifts?

not that I can tell, it seems if I let off the throttle sometimes it will shift and some time I have to keep in the throttle to get it to shift. I did order a timbo apps to see if that does help at all.

Do you have a live data tool to read things like Apps %?  

 

Have you checked the TV cable?

Edited February 16, 20178 yr by Me78569

3rd fear is hydraulic shift where 4th gear is electronic and so is the lockup. So 2nd to 3rd is having issues I'd say valve body and 2nd to 3rd shuttle is sticking.

Sorry don't have a live data tool, might be worth investing in though if they arnt too pricey. What is the TV cable?

 

Seems like it is the last 2 gears with the hard shifts

 

 

Edited February 17, 20178 yr by 2001cummins
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Sounds like od is harsh and then lockup. Count the shifts. Should be 5 all together with the 5th being lockup.

Yes sir will do. Will get back to yall after I get off this evening.

Stock tranny/valve body? You can have a hard 3-4 shift if the 3-4 spring is broken, which is common. If you're going to drop the pan anyways for a filter change, you can take the 3 screws out from the 3-4 accumulator housing and check the spring.

 

3rd to 3rd lockup can be "harsh" and 3rd to 4th can be "harsh" if you have a triple disc and modified valve body.

 

http://www.cascadetransmissionparts.com/a61847rh47re.aspx

Thanks for the help, yes it's stock as far as I know. I cleaned all ground wires in truck and seemed to really help. Now only gear that is harsh is 5th. And takes a while to let shift to 5th. Any ideas what would cause that

Edited February 17, 20178 yr by 2001cummins
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I also may try and switch relay to see if that helps. Ac noise was less than 0.024

Edited February 17, 20178 yr by 2001cummins
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No 5th in a 47re. What you are feeling is lockup. You are sure it got a stock converter and valve body?

not sure if it is stock or not, it had 160000 on truck when I bough it, He did not say he has had any trans work done to it. But when it locks up(what I am counting as 5th) it is a hard shift then does not ever come out of lock up unless I slow down, but truck has no problems downshifting it is always in correct gear if I slow down then take back off. Just don't remember any of my other cummins with auto tranny shift like that- but I guess from what yall are saying it may have different converter and valve body because it does not have any problems other than that. Timbo apps is suppose to be in tonight so I will put on and see if that helps- have read some other post that helped with there shifting on auto trans for some reason.

The apps will do nothing. It is a hydraulic circuit that actually applies or disengages the converter. Just uses a solenoid to dump or hold fluid.

so could it be the solenoid going bad.

NO. The fluid circuit in the valve body is too big or a converter issue.

Ok thanks, I was going to buy the master kit from cascade transmission parts that has all the solenoids and new gasket and 3-4 spring $200. Figured it would be worth it to see if that helped would be cheaper than taking to trans shop. But if you don't think that is the problem no point of wasting 200 dollars?

Make sure your TV cable is adjusted properly. I had a problem with mine being   sticky from corrosion. Lubed the cable till free and re adjusted and fixed my late lockup problem.

Edited February 24, 20178 yr by Thunder2001

thanks, will look at that too. I did end up changing the fluid and filter over the weekend and while I was in there, I did find the 3-4 spring to be broke in half. Seems to shift better now but still late lock up but not as harsh. thanks for all the help from everyone.

Someone help me out on this one...

 

Does the 01 fall into the same category as 02 as far as with O/D on (ie; no backlit O/D on dash) the trans will lock up in 3rd, then shift to 4th, then lockup again in 4th?

 

If so then I think it sounds fairly normal, other then the broken spring obviously. Mine will shift pretty harshly if I leave it like stated above and am sorta putting around. Even more so when cold, but it's only when shifting from locked 3rd to unlocked 4th then back to locked 4th really quickly, and this only happens when accelerating slowly through those speeds regimes. Unless I'm on it pretty good, like 1800rpm and above, the shift from locked 3rd to unlocked 4th to 4th locked will smooth out quite a bit.

 

My trans is 100% stock (......one day dynamic tuned ) and that's how mine shifts. Now, that's not to say that's normal either, but I haven't really seen it do anything to cause any concern from my end.