4L80E vacuum modulator kit question.
01-01-2009, 05:20 PM
#1
4L80E vacuum modulator kit question. Here is a photo of the parts included in the Transgo kit.
Looked pretty simple, but when I actually tried to install it, the holes wouldn't line up, even when I pushed in firmly on the modulator.
After a little closer inspection I decided to modify one of the parts. Hope it works.
I will post a photo of the modification next.
Feel free to comment. I expect that the change I have made isn't really the right solution, but I did it anyway.
Looked pretty simple, but when I actually tried to install it, the holes wouldn't line up, even when I pushed in firmly on the modulator.
After a little closer inspection I decided to modify one of the parts. Hope it works.
I will post a photo of the modification next.
Feel free to comment. I expect that the change I have made isn't really the right solution, but I did it anyway.
01-01-2009, 05:29 PM
#2
I found that the bottom of the modulator has a radius that was preventing it from seating flat. The instructions don't say anything about how it is supposed to seat, and the photo in the instructions isn't close enough to tell for sure. The modulator looks like it is just a modified TH400 part with the end cut off. So perhaps this modulator just had a larger radius than normal, preventing the assembly from seating correctly. Anyway, I am not a pro builder, but I decided to radius the transgo part so the modulator would seat the way I think it was supposed to be assembled. Attached are a few photos. I may not have done it correctly, but perhaps this will help any other novice builders.
01-01-2009, 08:13 PM
#4
im not 100% sure what your saying, i have not installed mine yet, doing a manuel vb setup, but i thought my instrs. said their was a flat spot on the mod, which i assumed was for the plate to sit flush, but the mod has no flat spot-is that the problem your having?
