Transmission skipping second gear

1977 FORD E-SERIES VAN
130,000 MILES • 5.8L • V8 • 2WD • AUTOMATIC
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MI30189
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I have an e-150 van, 351w, automatic (C-6). I had the transmission rebuilt about eight to ten years ago, but have only put about 200 miles on it since then. The van has sat for the last three to five years, I had engine rebuilt and when I tried to drive it, I noticed that it was skipping second gear. When you start to slow down it sounds and feels like it is banging into gear. Please help me get it running again. Thank you, M
Oct 4, 2018 at 3:08 AM
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STRAILER
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Hello,

It sound like the transmission vacuum modulator line fell off can you check the vacuum source and connection to the modulator?

Cheers, Ken
Oct 6, 2018 at 9:21 AM
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MI30189
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Hi Ken,
Thank you for the start to my problem. I will look into it tomorrow. I appreciate your time.
Thank you,
Mark
Oct 6, 2018 at 1:14 PM
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STRAILER
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Let us know :)
Oct 7, 2018 at 3:48 AM
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MI30189
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Hi Ken,
I checked the line to the vacuum modulator and changed out the modulator and found it not to be my answer. I was driving around and it seems like there is a governor on it, went to accelerate it is trying to shift with no luck. Can you give me some other pointers?
Thank you,
Mark
Oct 30, 2018 at 1:59 AM
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STRAILER
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Is there a throttle pressure rod on this van? Sorry it has been awhile since I have worked on one. How does the fluid look and smell?
Oct 30, 2018 at 5:17 AM
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MI30189
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Hi Ken
Thank you for responding so fast. No throttle pressure rod on this model. I had changed the fluid and filter just last month. Help
Thanks,
Mark
Oct 30, 2018 at 5:33 AM
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STRAILER
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It sounds like something inside the transmission let go like an accumulator seal, might be time for a rebuild. I would try a new vacuum modulator just to see what happens might be worth a try. Make sure the vacuum supply is good.
Oct 31, 2018 at 3:34 AM
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MI30189
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Thank you Ken
You have been quite helpful, so on my next day off, I will start tearing it down, I have nothing to lose now. Will let you know.
Thank you,
Mark
Oct 31, 2018 at 5:44 AM
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STRAILER
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Sounds good mark. Let us know what happens and please upload pictures or videos of the problem.
Nov 1, 2018 at 4:42 AM
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MI30189
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10-4
Nov 1, 2018 at 6:24 AM
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