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Cruise-O-Matic problems

March 15 2012 at 10:14 PM
  (Login tbird6663)
from IP address 71.224.53.167

 
Cruise-O-Matic installed in a '63 Thunderbird, trailer queen. When the car was restored, the transmission was rebuilt, shift kit installed, and functioned fine for two years with intermittent use, driving on and off trailer and onto the show field 5-6 times per year. This year while tuning the carbs with the car in park, it felt like the engine did not want to accelerate. Though I didn't realize it right away, it turned out that the engine was in gear and park at the same time. When the car was eventually backed out of the garage, it would not move forward in any gear - reverse was still engaged. If the car was shut off and restarted, the car would move forward in D1 ( felt like it was starting in second gear), but if reverse was engaged the trans would again lock up when moved to D1, D2, or L. Took the trans out, removed the shift kit and noticed that the holes in the original plate did not match up at all with those in the shift kit, and thought that may have introduced a cross leak, so replaced the new plate with the original. Clutches had all been burned up and new packs were installed, trans cleaned etc.

Installed the trans back in the car and now it goes into reverse and drive (D1, D2, and L) just fine, but it won't upshift to 2nd gear unless manually shifted from D1 to D2, and then there is no 2-3 shift. If manually shifted from D2 to D1, it slams back into 1st gear and won't upshift. When starting out in D2, it starts in second, but won't upshift to third. All gears, R, D1, D2, and L initially engage very smoothly, doesn't slam into gear at all. There is good vacuum at the modulator and the line is connected. Shift linkage and manual downshift linkage have been adjusted, checked, and rechecked are functioning correctly. Could the modulator (which was installed new at the initial rebuild) have gone bad already? Governor problem? The car has been test driven about a mile so far with no change in the initial symptoms.

 
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69.106.237.179

It sure sounds like Governor

March 15 2012, 10:21 PM 

Take it out and clean it . Pete

 
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(Login tbird6663)
71.224.53.167

Re: It sure sounds like Governor

March 15 2012, 10:30 PM 

I'm not a transmission guy. Is this as easy to do as the shop manual makes it seem?Anything special to look for when inspecting/cleaning the governor? Thanks.

 
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(Login stuart40a)
Forum Moderator
71.17.81.131

Re: Cruise-O-Matic problems

March 16 2012, 8:00 AM 

The governor could be real stuck or on bassackwards.


You will have to remove the extension housing to have a look see.

Make sure the counterweight is installed properly and the governor assembly matches holes in the counterweight.

 
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(Login tbird6663)
71.224.53.167

Re: Cruise-O-Matic problems

March 16 2012, 8:05 AM 

This is an early '63 cruso and does have the removable inspection plate. Is it possible to remove the governor through that hole?

 
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(Login stuart40a)
Forum Moderator
71.17.81.131

Yup

March 16 2012, 9:02 AM 

Once you get the valve assembly removed poke something small in the holes of the counterweight to see if it is installed on the output shaft properly.

 
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