C4 Governor Repair?

C4 Governor Repair?

Dean
Dean

November 3rd, 2010, 6:16 pm #1

I have a 1967 Cougar with a 289 and a C4.

Recently when it is cold, it will not shift into 3rd until the transmission gets warmed up. When it's hot, it upshifts OK, with clean shifts, but will stay in 3rd instead of downshifting when I slow or stop.

I was told that it was probably the governor.

How do I repair it?
Does the transmission need to come out, or can it be done by removing the tail section and getting to the governor?

Thanks in advance.
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Joined: November 18th, 2004, 4:20 am

November 3rd, 2010, 8:16 pm #2

Look for moisture in the vacuum line.
Pull the hose off at the modulator valve, then blow air through the hose.
Then check the KD linkage.
Make sure there is a return spring.

If that is ok then remove the housing.

I imagine the fluid is at the correct level?
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Dean
Dean

November 3rd, 2010, 11:10 pm #3

Fluid levels are OK.

I checked the vacuum line first thing.

Replaced the modulator, no change in shifting (made sure the pin was back correctly).

Fluid is a nice red color, no burned smell.

When warm, it will manually shift through all gears. No slipping.

It goes into reverse with no hesitation, also takes off without hesitation when manually shifted into low.

Is there any special cleaner to clean the governor with, or will regular parts cleaner/solvent work?

Thanks for responding so quickly.
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Joined: November 18th, 2004, 4:20 am

November 4th, 2010, 2:48 pm #4

Any automotive solvent type cleaner will work.
The governor is held with 4 small bolts.

There are 2 valves inside that must move freely under their own weight.

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