Last year I got my tranny completely rebuilt,our local tranny specialist put everything heavy duty and it never performed too good it seemed like the shifting was sluggish from 1st to 2nd  and now 9000K later the tranny let go again he pulled it apart and everything was wore out he replaced everything under warranty and he mentioned that the problem was the alternator, as anybody experience something similar?

I very much doubt the alternator is to blame for this.  

 

 

The rebuilder may be thinking about AC voltage causing the PCM not to lock up  the overdrive but to wear out clutches and bands along with the sluggish shifting I think not, The transmission probably has low line pressure causing the bands and clutch packs not to fully engage/slip and the front pump is the first place to look.  

Checked the AC voltage from the alternator and I picked up 22.8 mV ac ? is that good?Then I pulled the alternator fuse out went for a ride same thing.How and where can you check the pressure at the front pump?The tranny guy mentioned that it's probably the governor pressure not engaging due to voltage from the alternator?When my tranny shifts from 1st to 2nd there's like a delay if I drive up a steep hill in drive the tranny overheats but if I put it in 1st gear then no problem.

Wagn,

 

22.8mV (22.8 milli volts) = 0.0228 Volts    So your AC voltage seems to be fine.  

 

Hope a more saavy automatic person will chime in.  I have attached the pages from the FSM that show test port locations.

 

HTH

 

Hag

2001 FSM Ram 21-659.pdf

Thanks Hag,I'll need to find fittings to adapt guages,there's nothing on my bill from the Tranny guy regarding governor pressure valve & sensor maybe it's a problem with low pressures??

Question can the 47re tranny handle 35" tires with  3.55 diff"s maybe too much of a load on them,does anyboby as the same problem?

Did anyone ever change the governor valve to get better performance out of there tranny?

I had mine replaced and there was no difference. Then 3k miles more it decided to munch on the torque converter. So one simple little valve is not going to make all the wore out bands, clutches, etc better nor is it going to fix wore out torque converters either.

7 hours ago, Mopar1973Man said:

I had mine replaced and there was no difference. Then 3k miles more it decided to munch on the torque converter. So one simple little valve is not going to make all the wore out bands, clutches, etc better nor is it going to fix wore out torque converters either.

 

 

Just wondering...Did this happen recently?

 

Is this your Dynamic Transmission?

Edited September 19, 20168 yr by 015point9
question

On September 16, 2016 at 2:34 PM, wagntagn said:

Thanks Hag,I'll need to find fittings to adapt guages,there's nothing on my bill from the Tranny guy regarding governor pressure valve & sensor maybe it's a problem with low pressures??

Question can the 47re tranny handle 35" tires with  3.55 diff"s maybe too much of a load on them,does anyboby as the same problem?

 

Clearly running anything bigger then stock, you're more then likely to put extra/unneeded strain on drivetrain components. With that said, if you drive nice majority of the time and don't hot shot it, I think things would be ok for the most part. Still probabaly some extra wear and tear but nothing too crazy. I'm currently on 315's just an FYI. 

Edited September 19, 20168 yr by notlimah

Exactly why I went to an undersized tire was to reduce the stress on the transmission. Still in all end up breaking the main shaft later. Larger tires do place a huge amount of stress on driveline and transmissions.

The tranny is still acting up from 1st kind a skips 2nd then goes in 3rd ,one thing I did is when pulling up hill if I leave the tranny in 1st gear it doesn't run hot if in drive it overheats,the second gear doesn't engage fully overheating tranny,my traany guy told me it's bad grounds causing the issue some guys did the fix by wrapping grounds with foil paper??Is this possible?

Tinfoil is good for keeping your phone from ringing and keep unwanted frequencies out of brain. As for AC noise, best to fix alternator, as it will slowly but surely fry other expensive things. Lol sorry couldn't resist. 

Absolutely. Do NOT install noise filters, add tin foil, modify APPS wiring or extra ground wires. Fix the damaged alternator... Most likely a bad diode pack in the alternator fairly common issue.

K thanks guys,we have a local alternator guy I'll go see him Monday morning maybe he had to deal with the issue before,probably best is get mine rebuilt .

1 hour ago, Mopar1973Man said:

Absolutely. Do NOT install noise filters, add tin foil, modify APPS wiring or extra ground wires. Fix the damaged alternator... Most likely a bad diode pack in the alternator fairly common issue.

 I am wondering...When adding grounding wires.. it hides the harmful AC ripple because it creates a more efficient route to the batteries? Why can't the DVM measure the A/C ripple thru the added grounds if one probe is on the negative battery post?

 

 

12 hours ago, wagntagn said:

The tranny is still acting up from 1st kind a skips 2nd then goes in 3rd ,one thing I did is when pulling up hill if I leave the tranny in 1st gear it doesn't run hot if in drive it overheats,the second gear doesn't engage fully overheating tranny,my traany guy told me it's bad grounds causing the issue some guys did the fix by wrapping grounds with foil paper??Is this possible?

I sometimes have gear hunting between 1st and 2nd. It's kind of like I'm cruising slowl,y no acceleration just letting the truck run a little bit above coasting, floating So to speak. I have not gotten rid of the issue and my A/C voltage with the Fluke is .01.

So I'm cleaning existing grounds and the truck seems to be responding better in other ways but still have more to clean and tighten. Some were not snug and at worse only slightly corroded.

 

I did have to add a ground from the alternator casing to the negative battery post because my dc voltage at the batteries was too low in comparison to the voltage at the back of the alternator. even though everything is clean tigh at the battery postst, the alternator ground was showing a poor ground connection thru the mounting bracket.

 

Mike does not like me doing this even though it's my truck, LOL, so I promise to unhook this ground during A/C ripple tests.

Edited May 13, 20177 yr by JAG1

check your tv cable for correct adjustment!

Here's what I get for voltage with the multimeter,my body mentioned why is it only affecting the tranny you would think there would be issues with engine also?

Sorry not body but buddy??

Is that test on the batteries or off the back of the alternator?

on the batteries