Automatic Transmission 2-Speed thru 10-Speed GM Autos | Converters | Shift Kits
Sponsored by:
Sponsored by:

What's my problem? Trans or convertor?

Thread Tools
 
Search this Thread
 
Old Dec 4, 2013 | 02:52 PM
  #1  
Wicked69's Avatar
Thread Starter
TECH Fanatic
 
Joined: Oct 2011
Posts: 1,425
Likes: 0
Default What's my problem? Trans or convertor?

Last week the car would not go into gear. Finally got it to go into gear and limped it home. Once I got home the car would not go into any of the gears to include reverse. I checked all the fluids and was good to go.

Today I drained the E85 and put in 5 gallons of 87 to run the engine and get any E85 out of the injectors, fuel lines, etc.. Before it sits for the winter. I started it up and let it run to operating temps. Just for ***** and giggles I tried the gears. I went into all the gears, normally but it sounded like it was "clattering" then the clatter would go away. Finally, would not go into gear again.

First I was thinking it was the trans but now I am thinking maybe a broken flex plate or the convertor. I am not sure. Going to pull it but thought maybe someone new what it might be.

Its a power glide, a PTC 9.5" convertor. Flexplate is stock that I modified the holes for but have been running it like that for 2 years without issue. Lately it has felt as though it was dragging in gear. Especially reverse.

In the past we burned up a pump because I didn't space the convertor enough. This time I used two thin washers to space. Maybe it's too much of a gap now. I measured it to be a 1/4" gap which I thought was correct.

Let me know what you think.

Last edited by Wicked69; Dec 4, 2013 at 04:45 PM.
Reply
Old Dec 4, 2013 | 04:50 PM
  #2  
fbody_brian's Avatar
12 Second Club
 
Joined: Feb 2012
Posts: 419
Likes: 4
From: Long Beach, MS
Default

I usually associate "would not go into gear" with a manual trans.
Is it slipping in all gears?
Does it just feel like neutral?
Is it physically not letting the shifter move?

confused
Reply
Old Dec 4, 2013 | 06:54 PM
  #3  
Wicked69's Avatar
Thread Starter
TECH Fanatic
 
Joined: Oct 2011
Posts: 1,425
Likes: 0
Default

I can move the shifter freely and it is like it is in neutral. However, if I go out a day later and fire it up, I have all the gears for about a minute then you hear some rattling and no more going into gear. The shifter still shifts like it always does. When it did go into gear it would drag. It was worse in reverse. It felt like you was riding the brake.

Sometimes you can be in Park when it won't shift but the shifter is in park and if you rev it up it tries and moves the car just a little. Almost like your foot braking it but you aren't.
Reply
Old Dec 5, 2013 | 08:15 AM
  #4  
Wicked69's Avatar
Thread Starter
TECH Fanatic
 
Joined: Oct 2011
Posts: 1,425
Likes: 0
Default

No ideas?
Reply
Old Dec 5, 2013 | 03:24 PM
  #5  
Wicked69's Avatar
Thread Starter
TECH Fanatic
 
Joined: Oct 2011
Posts: 1,425
Likes: 0
Default

No one? I am thinking broken planteries would rattle.....
Reply
Old Dec 5, 2013 | 03:28 PM
  #6  
mrvedit's Avatar
Moderator
15 Year Member
Photogenic
Photoriffic
Community Favorite
 
Joined: Aug 2010
Posts: 7,323
Likes: 529
From: Ann Arbor, MI
Default

Very few people here are familiar with PowerGlides.

Since it sometimes works, it cannot be a broken part like planetaries.
Sounds like a pump/pressure problem.
Reply
Old Dec 5, 2013 | 07:06 PM
  #7  
slow67's Avatar
Gingervitis Addict
15 Year Member
iTrader: (2)
 
Joined: Nov 2004
Posts: 2,399
Likes: 3
From: DFW
Default

It tries to pull forward because in a glide you are always turning the planetaries (friction). I would put a pressure gauge on the cooler line and the line pressure and see what your pressures are.
Reply
Old Dec 5, 2013 | 07:21 PM
  #8  
Wicked69's Avatar
Thread Starter
TECH Fanatic
 
Joined: Oct 2011
Posts: 1,425
Likes: 0
Default

Well I know I am losing pressure because the fluid shows overfill with it running and in neutral. So the pump isn't sucking down any fluid.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-1

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-2

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-3

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-4

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-5

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-6

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-7

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-8

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-9

10 Camaros You Should Never Buy

 
Old Dec 7, 2013 | 01:13 AM
  #9  
l96a1's Avatar
Registered User
 
Joined: Dec 2013
Posts: 2
Likes: 0
From: Orange County
Default

That's odd. I don't know what the problem could be
Reply
Old Dec 7, 2013 | 09:58 AM
  #10  
rotary1307cc's Avatar
8 Second Club
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (5)
 
Joined: Jan 2007
Posts: 2,790
Likes: 123
Default

When u say doesn't go into gear what do mean?

If you chip the planet set it is going to growl badly in neutral.

Low and reverse will bind and make noise

High should stay quiet for the most part
Reply




All times are GMT -5. The time now is 04:21 AM.

story-0
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-1
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-2
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-3
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-4
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-5
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-6
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-7
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-8
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-9
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE