Alright tranny experts, I have a good one for ya...

I've got a 93 700r4, it's got about 30-40k on a rebuild. Shifted strong in the donor car. Pulled it out of the caprice and stuck it in my mercury. It promptly stuck in 1st gear. I have pulled the governor, and it's still good and the valve still moves freely. I pulled the pan and the fluid is clean and doesn't smell burnt. There's a reasonable amount of sediment in the pan. I rolled the ****** over and the TV cable operates freely. The throttle valve in the valve body operates smoothly and doesn't stick. I'm at a loss as to what to check next. Should I look at how it's wired? Is there anything I can check while it's on the ground? I'm thinking about to sticking a transgo sk700 shift kit in? Is that a good investment? Thanks.

 

OK, you won't wanna hear this, but...
The 93 700(4L60) has electric solenoids to control the shifting via the ECM. Without the computer(or a standalone unit) you will only have first gear. Nothing is telling it to shift.

 

there's got to be a way around that. google it and see what you get.

 

Yeah, it's called a big money aftermarket computer to run the transmission, unless you can scare up a truck with a pre-computer control 6.2/6.5 diesel and a 4L60E and pull the stock computer/harness out of that.

 

This ****** has the same 4 prong plug just like all the other 700's I've seen.

 

see if they make a manual **** conversion for this trans. it's just a bunch of gears and levers. there has got to be an easy way to make it work.

 

To the others commenting that it's an electronically shifted trans, it can't be if it has a TV cable as the electronically shifted ones (4L60E) don't have this.

Is the TV cable hooked up to the carb and properly adjusted?

 

Now that there is funny. Sounds like the question at the start of an ethnic joke!

Oh yeah, Pull the governor out of the trans and check the plastic gear on the end of the governor. They break at the rollpin. And they made 700r4s in 93, with the TV cable.

 

That's the kind of **** I DO NOT watch!

 

Not an expert however T700 (4L60) is non electronic and doesn't require a computer. The 4L60E however is electronic and does require a computer. www.optishift.com makes a computer as do other manufacturers. Try reputable dealers, www.gearstar.net, www.monstertrans.com. Here's a HGM computer sold by www.transmissioncenter.net. Not cheap, however it's a necessity, not a luxury. I believe the later electronic transmissions don't use a Throttle valve (TV) cable as electronics have taken over. 4L60 on left, 4L60E on right. Note the electronic module on 4L60E to the rear of the servo.

Plenty of articles out there on newer electronic transmissions, have a read of this as it explains technical issues in lay man's terms. www.cl***ictrucks.com/tech/0711ct_gear_star_4l60e/index.html

 

I adjusted the TV cable as per various instructions on the web. I also had a mechanic friend come by and double-check my work.

 

there should be only one wire prong inside of the 4 plug connector on the trans,that's the 12v lead from the stand alone engine ecm controlling shifting the computer tells it when to ground for OD,thats all.Sounds like you have an internal lip seal rolled over or cut causing a pressure leak,another weak point in those trans were the reaction sun shell splines would let go,but you would lose 1st,3rd and reverse if that happened.

 

g o v e r n o r

 

1993 was the last year of 700r4 renamed the 4L60. Does have lock up converter but not computer controlled like 4L60e. As poster said before since you have TV cable....

If it's not TV stuck, governor gears stripped or governor broken it's gotta be torn down. But first? Have you checked line pressure for TV adjustments using shop manual?

 

The pic on the left is a 700 and the one on the right is a 4l60e. The 4l60e has the plug on the p*** side. My plug is on the drivers side and a TV cable make it a 700.

 

'93 was a transition year between 700R4 and 4L60e,they were calling late built 700's, 4l60e,they had TV cable,4 prong lock up provision for overdrive,and a governor for shift point calibration...

 

Just remembered as already stated in thread, know a fellow with a T700 in his '56 Nomad that wouldn't shift out of 1st. Once he repaired the governor it started shifting in all gears again and is still shifting OK today. Hopefully a simple fix.

 

Mine has done that a few times after doing adjustments on the TV cable, and each time it has been the Plunger sticking a little in the valve body. Even though the TV cable seems to working. They make a 700r4 JR kit that fixes it, check Bowtie Overdrives.

 

I think I'm going to throw a new governor and a shift kit at it and cross my fingers.

I haven't done that yet. Would the ATSG tell me how to do that?

 

if you only have first, your hemoraging pressure somewhere inside.

 

my thoughts exactly!!,what he said ^^^possible low/reverse drum lip seal,internally

 

Ok, if it did roll a seal internally, what would cause it? I did let the ****** set for a few months while I got the Merc ready to transplant the engine/******. I did change the fluid before I fired it up.

 

sometimes in cheap rebuilds,the kits come with "marginal" seals at best,sometimes the seals just swell from sitting and when the trans finally has pressure after sitting,slices,gets ****ed,pinches between the drums and thats it..to be sure the only real way to know is a teardown..these are fairly easy transmissions to rebuild.But if you wanna slap a governor in it by all means it's easy to do,you won't hurt anything and it can be done on the car,do you have any other gears?that you know of ? reverse? did you try to run the car in any of the manual modes? 2nd,3rd?

 

OP,

If your governor is free, then your TV valve is stuck. The plunger that you can see from the outside, depresses a spring which acts against the TV valve. The only way to tell if its stuck, is pull the valve body. The Transgo shift kit comes with a special self cleaning TV valve that also has an auxiliary return spring.

 

I do have reverse. Thats what made me think it was the TV valve.

 

i had a mopar ****** that had first, and reverse. Would not shift into high. Turned out that one of the chrome vadnium sealing rings on the main shaft was too small, and didnt seal. when the governer told the ****** to shift into high range, all the ****** fluid pressure that was suppose to, in my case, go to the direct drive cluth, was leaking by that seal.

Governer tells everything. make sure to check your valve body too. Could have stirred up some **** when you moved the ****** around.

Another possibility is that the pump is bad, but thats not what anybody wants to hear. Not likely if the ****** was fine before.

 

Anyone on the morning crew wanna take a look?

 

Potshot is right. Pull the valve bodyand inspect the throttle valve close. Im sure you will find that the one you cant see is stuck.It was a common problem.There are two valves in that bore.

 

Yes, it will have the same 4 prong plug, but...
Pre '88 models that have a carb only use 1 terminal. '88 and newer injected models use all 4 terminals.(and still have a TV cable and govenor)
Pull the pan off and you will see more than 1 wire inside.
The later 4L60E models use a 20 way connector, no cable or govenor.

 

Torture update #1: I flipped the ****** over and pulled the pan. I got the TV linkage off and pulled the TV plunger and spring out. I worked for about an hour trying to get the TV valve out (which moved freely in the bore) but it was stuck on a ridge or something. I finally gave up. How the he'll do ya get that SOB valve out?