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Username Post: Stumped on Troubleshooting A Powerglide        (Topic#357306)
NicolasRomero 
Poster
Posts: 50
NicolasRomero
Loc: California
Reg: 12-25-14
07-20-19 04:20 PM - Post#2771167    

About three and a half years ago I did a rebuild on my Aluminum Powerglide. Replaced all the seals and gaskets and put everything back together the way I found it. I did not fill it back up with ATF though, I let it sit dry for about a year while I was doing work to the rest of the car. After I had my engine rebuilt, I filled the transmission with ATF and tried driving it. I put it into drive and gave it gas but the car wouldn't move at all. Even when I had the car up on jacks and was running the engine, I did not see the rear wheels turning. I let another 6-9 months go by without diagnosing what the problem was. I flushed out some of the ATF because it was slightly overfilled and had the valve body checked by a shop (they said it was working just fine). This time the wheels started turning while it was on jacks. So, I got it back on the ground and tried driving it but this time, the car would only roll forward in all gears unless I had my foot on the brake.

I'm wondering if anyone on this forum has had a similar experience or might know what else I could try so that I can get this thing driving again before I decide to just take it to a shop and have them rebuild it again. Hopefully I provided enough context but if something is unclear or if there is more information needed to better answer my question, please ask. It can sometimes be hard to include every little detail when typing these things out.

P.S. my reason for letting months go by before getting around to troubleshooting again is because I am out of the state most of the year for school. The only real time I get to work on it is when I go back for a couple weeks to a month at a time.

Nick
1963 Chevrolet Bel Air 4-door sedan


 


junky 
Valued Contributor
Posts: 3700

Loc: Northeast CT
Reg: 06-27-10
07-20-19 06:22 PM - Post#2771179    
    In response to NicolasRomero

Can't say what is wrong with your transmission, but I can tell you what was wrong with mine, with similar problems. Mine had hard gaskets, and the lining on the clutch plates was coming off. Also, when it was take apart, the man doing it was extremely experienced, and he found that an important spring wave washer was missing. He had to do some machine work to add another clutch to make up the difference for the missing part.
You have no idea who or how often someone had their hands in that transmission in the past, and if they left out an important part, that can cause you big time problems. My original problem was poor shifting from the day that I purchased the car. While the engine was out for rebuilding, I felt that it was also the time to do the transmission.
It is possible that the parts that you installed, might have gone bad from just sitting and exposed to the atmosphere. I don't know enough about the transmission to give you an honest opinion. I trusted mine to a fellow that builds transmissions for racing, so I felt that he was the perfect person for the job.


Never argue with an idiot. He'll drag you down to his level, then beat you with experience.


 
Rben26 
Newbie
Posts: 3

Loc: San Francisco Bay Area
Reg: 06-23-20
08-09-20 01:12 AM - Post#2800651    
    In response to NicolasRomero

Hello,

I have a 1963 Bel Air 4-dr sedan, as well, with 230 6-cyl 2speed Powerglide. I have been having an issue that seems similar to what you've posted. I am curious if you are still experiencing the issue.

To provide more details, my transmission locks up after driving it for about an hour. It won't reverse, go forward, nor roll while in neutral. I have to wait a couple of hours for everything to cool down, then it drives with no problem. I am trying to avoid getting the transmission rebuilt or replaced. I am hoping it's something that could be fixed easily.

I appreciate any information you can provide.

Thanks!



 
DZAUTO 
Member #51
Posts: 9025

Loc: Mustang, OK, USA
Reg: 12-25-99
08-09-20 05:13 AM - Post#2800659    
    In response to Rben26

The absolute best way to fix a Powerglide (or any auto tranny for that matter), is to remove it and throw it in the river.

This is the auto tranny in our 70 Chevelle----------------- ---------it's called a Muncie!

https://www.youtube.com/watch?v=Xra1mG1yE8Y



Attachment: DSCN0531.JPG (865.25 KB) 6 View(s)






 
rcr3 
Site Ambassador -"17th Year" Silver Supporting Member
Posts: 3445
rcr3
Age: 69
Loc: MANHEIM PA. U.S.A.
Reg: 11-24-02
08-09-20 09:35 AM - Post#2800682    
    In response to DZAUTO

This is a recording........... recording......recording..........

'67 Camaro survivor
'06 Z71 Sierra Ex Cab
'37 Chevy cp.SOLD!!6/7/14
'00 S10 Ex Cab BUILT FOR EVERYDAY,NOT JUST THE HOLIDAYS
'73 Nova pro-street project
'17 Chevy Trax LT







 
DZAUTO 
Member #51
Posts: 9025

Loc: Mustang, OK, USA
Reg: 12-25-99
08-10-20 05:50 AM - Post#2800767    
    In response to rcr3

What is a recording?



 
Tri5man 
Valued Contributor
Posts: 3952
Tri5man
Loc: Possums Crotch, KY
Reg: 06-26-07
08-10-20 09:58 AM - Post#2800786    
    In response to DZAUTO

I think Tom is just voicing his opinion on Powerglide transmissions.



 
DZAUTO 
Member #51
Posts: 9025

Loc: Mustang, OK, USA
Reg: 12-25-99
08-10-20 10:59 AM - Post#2800794    
    In response to Tri5man

  • Tri5man Said:
I think Tom is just voicing his opinion on Powerglide transmissions.



ALLLLLLLLLLLLLLLLLLLL auto transmissions. I DO NOT like any of them!
We have a 2004 Impala SS and a 2012 Tahoe which we bought new. The ONLY reason that they do not have manual transmissions is because a manual tranny was not available with either. The Tahoe is my wife's primary vehicle, but she can (and has) put many guys to shame with a 4sp shifter!!!
Even though The Chevelle title is in both of our names, actually, the 70 Chevelle is her car. Her first car was a 3sp 69 Mustang, so she does great with a manual tranny car. And if the Imp SS or Tahoe were manual tranny vehicles, she would be just fine.
I've been banging gears since 1954 (started sneaking my mom's 49 Plymouth out when I was 12) and still using (and PREFER) 3 pedals.
YA, YA, YA, YA, YA,YA, maybe an auto tranny is faster on the drag strip ------------------- but I'm not drag racing every day!!!!!!!!!!!!!!!
Nope, no auto trannys for Tom Parsons!



 
rrausch 
"16th Year" Silver Supporting Member
Posts: 14588
rrausch
Loc: L.A, Cal. & St. Louis...
Reg: 04-07-03
08-11-20 04:10 PM - Post#2800890    
    In response to DZAUTO

Well, lets try to help this guy. If it were mine, I'd keep trying it, on jack stands. Let it sit for awhile, then fire it up and run it through the gears. Hopefully you'll keep seeing progress.

1953 210 Convertible, 261 with dual Carter YF 966S carbs, P.S., Remote Bendix P.B. Booster... shade-tree restoration about done.




 
rcr3 
Site Ambassador -"17th Year" Silver Supporting Member
Posts: 3445
rcr3
Age: 69
Loc: MANHEIM PA. U.S.A.
Reg: 11-24-02
08-12-20 11:26 AM - Post#2800933    
    In response to rrausch



'67 Camaro survivor
'06 Z71 Sierra Ex Cab
'37 Chevy cp.SOLD!!6/7/14
'00 S10 Ex Cab BUILT FOR EVERYDAY,NOT JUST THE HOLIDAYS
'73 Nova pro-street project
'17 Chevy Trax LT







 
rrausch 
"16th Year" Silver Supporting Member
Posts: 14588
rrausch
Loc: L.A, Cal. & St. Louis...
Reg: 04-07-03
08-12-20 12:11 PM - Post#2800937    
    In response to rcr3

Your Powerglide won't lubricate in P, so when you are running it on jackstands, keep it in N or in gear.

1953 210 Convertible, 261 with dual Carter YF 966S carbs, P.S., Remote Bendix P.B. Booster... shade-tree restoration about done.




 
1941srodcoupe 
Member
Posts: 123

Reg: 07-08-03
08-19-20 06:20 PM - Post#2801544    
    In response to NicolasRomero

The first thing I would do would be a line pressure test. There is a least one plug you should be able to remove from the outside of the case. Maybe do a search on utube. Did you replace all the piston and servo seals? It is possible the test all the clutch packs and servo with air before installing the valve body.



 


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