As I said in Page 2, yea the 1-2 Shift valve VB hole needs plugged if the shift valve landing is modified with a flat.
As others said.
Elec Detent vale can be clogged open with metal debris (from Center-Support screw) but that would lose 3rd, and sometimes 2nd engine braking.
So, a reasonable person would drop the pan & take a look at the BB pluggin of the 1-2 Shift Valve EXhaust. Take a look at the VB pluggins & report back.
FUNCTIONALLY: FWD & DIR packs both have to "let go" to "Catch neutral".
So "loss of Line pressure" while in Manual 1st MIGHT is the only functional way to make this happen,while the other ranges work fine.
Anybody besides me suspect the "got no engine braking is 1st" is a bogus problem?...my BS meter a bit jumpy.
Last edited by Half-Inch Stud; 05-17-2008 at 03:27 PM.
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