<VV> Lockup Problems Re: more PG vs 4spd thoughts

[frankcb at aol.com]

Jim,
True, but from my research, the problem was a hydraulic one, not an electrical one.  The stock switch opened as designed but the hydraulic pressure in the lockup was too slow to release (maybe a clogged valve??) so the system stayed locked-up until it could slowly release the pressure over a period of time.  Not what you want when you suddenly have to stop for a light or a traffic emergency.
Regards,
Frank Burkhard





Frank, 
 
Too late to worry about it now, but couldn't you have put a switch in somewhere that allowed you to enable or disable the lockout?? Kinda like selective overdrive... 
 
Jim Houston 
 
On 6/7/2010 11:52 AM, frankcb at aol.com wrote: 
> Ken and Matt, 
> True, but problems can arise from the lockup mechanism as I found out one evening when I drove?my late wife's 89 Chevy Beretta (3 speed auto with lockup) to a?NJACE club meeting.? All was well until I got near and slowed down to enter?the meeting place.? The car acted like it had a manual trans and I needed to put the clutch pedal in.? So I shifted to neutral and coasted to a?parking place.? The lockup solenoid had failed to function correctly and kept the trans "locked up" even when it should have released it.? After the meeting, the lockup had finally disengaged and I was able to begin driving home, but I was afraid of a?reoccurrence of the problem so I had to choose highways and avoid?local roads that had stoplights and stop signs.? After exiting the highway near my house I had to slow down for a light and could?feel the same problem beginning to reappear, but I was able to get throught the light without having to completely stop.? As soon as I got the car in my own drivew 
> ay and braked to a stop, the engine shuddered and stalled since the trans (a 125C as I remember) remained locked up.? Subsequent research on the?Internet revealed that this was a known problem with this?GM 3 speed trans and with more research (and the shop manual that I always buy when I get a new car) I was able to locate and disconnect the wiring to the lockup solenoid.? From then on the problem was solved but the trans would never lockup again so I only used the car for local trips.? I was afraid that long trips with?NO lockup would lead to overheating of the ATF.? This?is not a problem with our Corvair PGs since they are designed?without a lockup feature. 
> Frank Burkhard?????? 







-----Original Message-----
From: Jim Houston <jhouston001 at cfl.rr.com>
To: frankcb at aol.com
Cc: kenpepke at juno.com; virtualvairs at corvair.org
Sent: Mon, Jun 7, 2010 12:28 pm
Subject: Re: <VV> Lockup Problems Re: more PG vs 4spd thoughts


Frank, 
 
Too late to worry about it now, but couldn't you have put a switch in somewhere that allowed you to enable or disable the lockout?? Kinda like selective overdrive... 
 
Jim Houston 
 
On 6/7/2010 11:52 AM, frankcb at aol.com wrote: 
> Ken and Matt, 
> True, but problems can arise from the lockup mechanism as I found out one evening when I drove?my late wife's 89 Chevy Beretta (3 speed auto with lockup) to a?NJACE club meeting.? All was well until I got near and slowed down to enter?the meeting place.? The car acted like it had a manual trans and I needed to put the clutch pedal in.? So I shifted to neutral and coasted to a?parking place.? The lockup solenoid had failed to function correctly and kept the trans "locked up" even when it should have released it.? After the meeting, the lockup had finally disengaged and I was able to begin driving home, but I was afraid of a?reoccurrence of the problem so I had to choose highways and avoid?local roads that had stoplights and stop signs.? After exiting the highway near my house I had to slow down for a light and could?feel the same problem beginning to reappear, but I was able to get throught the light without having to completely stop.? As soon as I got the car in my own drivew 
> ay and braked to a stop, the engine shuddered and stalled since the trans (a 125C as I remember) remained locked up.? Subsequent research on the?Internet revealed that this was a known problem with this?GM 3 speed trans and with more research (and the shop manual that I always buy when I get a new car) I was able to locate and disconnect the wiring to the lockup solenoid.? From then on the problem was solved but the trans would never lockup again so I only used the car for local trips.? I was afraid that long trips with?NO lockup would lead to overheating of the ATF.? This?is not a problem with our Corvair PGs since they are designed?without a lockup feature. 
> Frank Burkhard?????? 
> 
> 
> 
> 
> -----Original Message----- 
> From: kenpepke at juno.com<kenpepke at juno.com> 
> To: virtualvairs at corvair.org 
> Sent: Mon, Jun 7, 2010 6:57 am 
> Subject: Re:<VV> more PG vs 4spd thoughts 
> 
> 
> 
> 
> 
> 
> AND ... when the converter locks up it feels like the transmission has shifted 
> up one more gear; makes a 3 speed automatic feel kind of like a 4 speed or an 
> overdrive. Sure would like one in a Corvair :-) 
> Ken P 
> 
> ******************** 
> Matt Nall<patiomatt at aol.com> wrote: 
> 
> ron, Torque converters SLIP..200-300 rpm 
> 
> 
> Why today's cars, since '81, have "lockup Converters" 
> 
> 
> Matt Nall 
> Charleston, Oregon 
> http://mysite.verizon.net/nalllm 
> 
> 
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