Strange c6 problem
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Senior User
Joined: Aug 2002
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From: Chattanooga US
Strange c6 problem
I recently had the c6 rebuilt in my 68 ranger (390). A few weeks ago, after sitting for several hours it wouldn't go into gear, no reverse, no drive, nothing. After several minutes of running in neutral it went into gear and was fine all the way home. several days later I drove it again with the same symptoms but I noticed that if it is in drive it won't move until the rpms come up quite a bit (1500 or more ) it will barely move, then as the revs come up it will take gear suddenly and lunge forward. After it has been through one complete shift cycle everything is fine and it'll drive fine the rest of the day.
Any ideas as to where to start? The man that rebuilt this has been doing it quite a while with a great reputation but is unfortunately unavailable for a while.
Thanks
Greg
Any ideas as to where to start? The man that rebuilt this has been doing it quite a while with a great reputation but is unfortunately unavailable for a while.
Thanks
Greg
Cargo Master
Joined: Jun 2003
Posts: 2,982
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From: Somewhere Saskatchewan
The first thought that came to my mind is low fluid level.
You probably know but it should be checked running in Park.
One other thought is convertor drain back.
Fluid from the convertor could drain back into the transmission and the vehicle won't move until the convertor is refilled.
You probably know but it should be checked running in Park.
One other thought is convertor drain back.
Fluid from the convertor could drain back into the transmission and the vehicle won't move until the convertor is refilled.
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Senior User
Joined: Aug 2002
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From: Chattanooga US
Fluid level is dead on level. The convertert is still under warranty, it only has about 1000 miles on it. I guess I can pull it out and change it. I really hate to pull this heavy thing back out though.
Thanks
Greg
Thanks
Greg
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Senior User
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From: Chattanooga US
All the lines are new. And to the best of my recollection I flushed the cooler thoroughly.
Greg
Greg
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How long should I wait?
If you've got an idea I'd love to hear it.
Greg
If you've got an idea I'd love to hear it.
Greg
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Cargo Master
Joined: Jun 2003
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From: Somewhere Saskatchewan
sorry
I took a week off and drove to Las Vegas.
The convertor is filled with pressure from the pump.
If the pressure is too low the convertor can't be filled properly.
Remove the valve body, disassemble and clean it.
Also check the separator plate gasket for blocked or missing holes.
The convertor is filled with pressure from the pump.
If the pressure is too low the convertor can't be filled properly.
Remove the valve body, disassemble and clean it.
Also check the separator plate gasket for blocked or missing holes.
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Senior User
Joined: Aug 2002
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From: Chattanooga US
WOW
You drove from Canada to Vegas? Now that's a road trip.
Thanks for the reply. I'd like to add that for the first month after the rebuild all was well with no problems at all. This all started a couple of weeks ago. I plan to pull the pan this week, anything in particular I need to be looking for?
I avoid auto transmissions at all costs since they operate on magic and voodoo. LOL
Thanks for the help.
Greg
Thanks for the reply. I'd like to add that for the first month after the rebuild all was well with no problems at all. This all started a couple of weeks ago. I plan to pull the pan this week, anything in particular I need to be looking for?
I avoid auto transmissions at all costs since they operate on magic and voodoo. LOL
Thanks for the help.
Greg
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