47re tranny problems

[Dieselfuture]

Test it at the alternator, battery's will smove it out and reduce ac noise some. 

[Mopar1973Man]

11 hours ago, Dieselfuture said:

Test it at the alternator, battery's will smove it out and reduce ac noise some. 

 

Yes @Dieselfuture is right you have to test at the alternator BATT post.

 

 

[wagntagn]

Here's what I picked up at the alternator...64.5 Mv ac,is this bad? 

[Mopar1973Man]

Too high...

 

10 to 30 mV AC is good and normal...

 

30 to 50 mV AC marginal...

 

100 mV AC Fail.

 

[wagntagn]

Thanks you doing the alternator,hopefully that will solve my issues

[Dynamic]

What governor pressure solenoid was used during the build?

[wagntagn]

So replace the alternator and same thing tranny's doing the same thing 2nd gear hunt the alternator guy took the old one apart and it was not worth rebuilding in real bad shape so he told me that a new one should solve my issues and no luck ?so I checked the ac voltage and I'm getting in the 45 mv at the alternator?does that mean I purchased a bad rebuilt?No sure where to go?Here s pics to show the results

Any info on adjusting the tv cable?Here's pics on the 2 overhaul in 9000 km?

[Mopar1973Man]

Disconnect the field lead on the alternator and see if the problem goes away. If so the alternator is bad...

[notlimah]

When replacing the stock alternator with another stock, sometimes the 'new' one shows up out of what we consider spec but what's considered normal for parts stores to sell. Keep that in mind and let get those lifetime warranty returns goin!

[Dynamic]

That's a lot of AC voltage, but I'm not 100% sure that's your problem if you're having shuttle shifts. Again, what governor pressure solenoid was used in the build? It looks like a pretty generic "box build", so I would guess they used a stock replacement, if they replaced it at all. This, coupled with installing a "shift kit" (likely a Transgo), can flood a stock solenoid and cause all manner of weird shuttle shifts.

 

Set the TV cable so that your WOT 1-2 shift occurs at 2800-2900 rpm. If it occurs earlier than that, tighten it. If it occurs later than that, loosen it. Set it to 2800-2900 rpm...done.

 

I guess beyond these things, I'd need a bit more thorough description of what the symptoms are.

 

Yes, a well-built 47RE will put up with a whole lot more than just oversized tires with 3.55 gears. Ideally, whenever a tire size is changed, your differential gearing should be changed to match. Pretty much only the most thorough of customers actually do this. But, there's a lot more to being well-built than just a "shift kit" and "HD clutches"...

 

Stepping off of soap box, before I even get started.........!

[wagntagn]

I'll check with the Tranny guy for what governor press solenoid he installed for the Tv cable where can I find info on adjusting? Tomorrow I will go for a test drive can I just pull the alternator fuse out easier access than the lead on the alternator.

[notlimah]

Yes you can just pull the alt fuse to act like it's disabled.

[Mopar1973Man]

9 hours ago, wagntagn said:

Tomorrow I will go for a test drive can I just pull the alternator fuse out easier access than the lead on the alternator.

Hua?  The green and blue wires on the back of the alternator. No tools needs just squeeze the release tab and pull. The alternator fuse you'll need an 8mm socket to remove. 

[wagntagn]

So pull the fuse out and disconnected the 3 leads on the alternator and same thing so the alternator is ok next is do the tv cable and check what governor pressure solenoid was installed in the rebuilt?If no luck I'll try to find another Tranny shop for advise and double check the overhaul??

[notlimah]

So you're saying you pulled the alt fuse and wires and still had the same issues? If yes then that sorta clears the alternator of any fault (for now), so next like @Dynamic suggested, I'd find out what governor pressure solenoid was used and report back.

[Mopar1973Man]

Also, check the output speed sensor it could create an issue too if it's failing.

[wagntagn]

What's the procedure to check the output speed sensor?

After the Tranny overhaul even with the 35" you wouldn't think it would slip causing premature wear especially after 9000 kms?I only pull my 18' boat a few miles from home but going slow up the hills I have to leave the tranny in 1st otherwise the Tranny high temp light comes on.On heavy pulls at low speed do these trannys need xtra cooling?

[notlimah]

The heavier the load and the longer the torque converter stays unlocked, the hotter the transmission will get. I can't imagine your 18 foot boat weighs that much, but if you're driving really slow twisty roads and the trans is constantly shifting between 1-2gear, never giving the TC a chance to lock, it'll definitely get warmer. IMO that shouldn't get so hot that it's setting off the factory trans high temp light, which I think is something crazy high like 260*! 

 

A properly built trans and a lockup switch would solve this issue.

[Dynamic]

Easiest way to check an output speed sensor is to just screw a new one in there. They cost $10, and take 2 minutes to change.

 

I still think you're chasing a governor pressure solenoid issue. If you don't have a Borg HD in there, put one in...

 

The TV cable adjustment is not causing your issues, but you do need to verify that the WOT 1-2 shift is at 2800-2900 rpm.

[Mopar1973Man]

TV cable is easy to set according to the FSM books you just need to make sure they move together. So start with excessive slack in the cable and keep tightening till the cable just starts to move together and should move through a full range of movement with the throttle so if the throttle is WOT the throttle valve on the transmission should be wide open as well.