tranny type
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New User
Joined: Oct 2003
Posts: 2
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From: Montana
tranny type
My truck is a 1988 F-250 with 351 CID and automatic transmission. I have been unable to identify the tranny type from reading the posts here. The certification label code for the transmission is "K". Any help would be greatly appreciated. Thanks!
Thread Starter
|
New User
Joined: Oct 2003
Posts: 2
Likes: 0
From: Montana
tranny problems
Now that I know the tranny type is a C6 maybe someone has had a similar problem that I am having. None of my manuals (Haynes) show this symptom in their troubleshooting procedures.
The tranny will not up-shift when in the D position. Both 1 and 2 positions work fine. The fluid level was low, but bringing it up to level did not solve the problem. I checked the vacuum modulater and it held 25 lbs. Vacuum from the engine is good as tested at the modulator. Any help would be appreciated. Thanks!
The tranny will not up-shift when in the D position. Both 1 and 2 positions work fine. The fluid level was low, but bringing it up to level did not solve the problem. I checked the vacuum modulater and it held 25 lbs. Vacuum from the engine is good as tested at the modulator. Any help would be appreciated. Thanks!
