Was driving down a very steep crooked road here in Oahu, and the car lost third, as i was in that gear.Then I shifted down to second, and she was gone too. So, I coasted to a safe spot. I put it in first and it went in and held while I drove to a safe spot.Checked fluid and it was overfull by a quart. I put it in first as the fluid was not brown, but a nice pink color and smelled fine. I then retained 1-4th. It slipped a little going into gears 2-4. If I manually shifted the transmission it was delayed in shifting but hit hard. I then put it back in 4th and slowly drove home and it went all the way through the gears and I just got home.
I was going to drain some fluid out and make sure it is full, and not over full.
Any other things to check?
The TV cable is set and not loose, and the tranny has less than a 1000 miles on. The converter was redone by Vigilante as it was recommended when rebuilt. It also has, and has had before the last rebuild, a Trans Go shift kit in 3rd stage, or whatever stage it is before you make the tranny a full manual valve body.
Dexron III was used, and I have a BeCool radiator with a 7 row 24,000GVW internal to the radiator and a external cooler. Runs around 160-180 degrees, using my laser gun to check fluid temp. Not the most accurate but all I have.

 

Sounds like your 2-4 band is going on you. Obviously, if someone used a Trans Go shift kit, they have to be lacking 4L60 (700) knowledge. The servo and the band are the two common connections between 2nd and 4th.

Frank
CPT

 

Thanks Frank,
Well, I changed the filter and fluid. No change. now all I have is 1 and reverse. If I rev it up real good it will finally shift into 2-4th. But, I am thinking it is a gonner.
What do you charge for shipping to Oahu HI, Zip 96789. Cheapest as in no hurry freight!
Another thing to is ensuring the shop checks the TV cable on mine, and the pressure is correct. I have a place that is very reputeable, and honest. I should have know better than to take it back to the original builder, as he drives an F430 Ferrari.

 

Checked the operation of the TV cable.Had my daughter floor the gas pedal a few times and it moved the TV cable and the plunger in and out. Granted I dont know if this means its okay or not, but it showed me the system was/is moving.
Well here is the governor. Looks good, no wear. Had a green and white spring in it.All GM stuff, as this was and has never been changed.

 

A bad governor will usually cause a "no shift" problem. Is the valve free in the governor? Hold it with the gear facing up, and push in on both weights at the same time. Does the valve drop? Does it return easily when the weights are pressed back in? Make sure the valve DOESN'T drop if you only push one weight in.

The plunger for the TV will still move when the throttle is pushed. There is a smaller valve on the other end of the TV spring (that you can't see) that can get stuck.

Frank
CPT

 

The governor works fine, and the valve drops when the weights are pressed. I was hoping my lookse of the TV was good enough.
I am going to have to weight and see total costs, with shipping, before the wife and I can go forth with a new tranny. Its very frustrating haveing these 4L60's beak with my 396. I took it to the track maybe four times, and after the rebuild I did 4 autocrossing which is in second gear the whole time for 35-40 seconds of left/right turns at slow speeds. Very frustrating.