ohiojack
Active Member
My 1987 bronco 2's auto is a little slow in shifting in overdrive. It sometimes takes 2-3 miles before it finally shifts in. Once it's in it's fine until I stop or downshift. Filter/oil change or vaccum mod??? Any ideas?
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Shifting in overdrive
- Thread starter ohiojack
- Start date
ohiojack
Active Member
vss? Where is it located on the transfer case? Is it vaccuum controlled?
ohiojack
Active Member
Is it the vaccum modulator?
The VSS is in the transfer case and it's electric controlled. If the gears on it are slipping it will mess up your shifting. Trust me... Been there.I don't think the vacuum does anything for OD
Shran
Junk Collector
TRS Forum Moderator
Supporting Member
Article Contributor
Solid Axle Swap
Truck of Month
Bad vacuum modulator would cause weird/late shifts in all gears. There is a 3-4 shift solenoid that could be part of the cause, as could fluid level.
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