C6 Issues
Elder User
Joined: Dec 2007
Posts: 739
Likes: 1
Different set of issues in play for that problem Campinnut.
Loss of forward is caused by several different possible issues.
For example, if you can put the truck into manual first gear, and it takes off normally? That would point right to the one way roller clutch being bad. That same part is also used for reverse---so it's not that likely to be the cause.
Bad bands/clutch pack....pressure issue...gummed up valve body..etc..
It's worth a shot to start your own thread onto the problems you are having, we will do our best to lend a hand with figuring it out.
S-
Loss of forward is caused by several different possible issues.
For example, if you can put the truck into manual first gear, and it takes off normally? That would point right to the one way roller clutch being bad. That same part is also used for reverse---so it's not that likely to be the cause.
Bad bands/clutch pack....pressure issue...gummed up valve body..etc..
It's worth a shot to start your own thread onto the problems you are having, we will do our best to lend a hand with figuring it out.
S-
Elder User
Joined: Dec 2007
Posts: 739
Likes: 1
That's about par for the course for a rebuild. Just be sure they install and use a new/rebuilt torque converter. I've seen some shops just flush out the old one--
Main problem with re-using the old one? All that sludge that gummed up the system in the first place, gets pumped around the TC. And it does have internal parts that do wear out. In general it might be a good idea to replace it at the same time it's rebuilt. They normally run about $85-$100. It's good insurance, plus the input seal at the pump? Normally cuts into the flange of the torque converter over time. They do make "Sleeves" that can solve that problem, but why bother taking a chance?
S-
Main problem with re-using the old one? All that sludge that gummed up the system in the first place, gets pumped around the TC. And it does have internal parts that do wear out. In general it might be a good idea to replace it at the same time it's rebuilt. They normally run about $85-$100. It's good insurance, plus the input seal at the pump? Normally cuts into the flange of the torque converter over time. They do make "Sleeves" that can solve that problem, but why bother taking a chance?
S-
More Turbo
Joined: May 2002
Posts: 594
Likes: 5
From: Wetumpka, Alabama
How difficult is it to change out a vacuum pump on a 6.9 ?
i ain't rite
Joined: Mar 2005
Posts: 65,561
Likes: 5,593
From: Marlboro Mental Hospital.
very easy. but check vacuum first. you need at least 17 inches for the trans to work properly. and also check all the vacuum lines for leaks.
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