Calling all 700R4 Experts!

[mister.freeze]

I was looking at a YOUTUBE video for an automatic lockup using a pressure switch. The location of the switch is also where I would hook up such a gauge. Unfortunately, my case does not have that port...

[YoungPup1977]

What did YOUTUBE indicate what to do in that case ? ya gots to drop the pan again ? As fir as the lockup, you see where ya can wire up the TCC solenoid to the two prong pressure switch screwed into the 4th gear oil circuit ? I read that on here too, not sure how it works in town when that there trans shifts into 4th it goes right into lockup of the TCC, at lower speeds it might bog that motor down unless you gots lots of horse power under that hood, and if you got one of those huge duration camshafts it will chug a lug at low speeds...I read that to on this forum someplace, not sure where at this time. I been told every thing you read is true on this here internet......I believe it.

Well good luck to ya. Gots to go try out that Lucas “rebuild in the bottle” stuff on this here ZF transmission on this here customers jaguar. Wish me luck

[made2drag]

Originally Posted by mister.freeze

I was looking at a YOUTUBE video for an automatic lockup using a pressure switch. The location of the switch is also where I would hook up such a gauge. Unfortunately, my case does not have that port...

If you or anyone is looking into a lockup kit....

I hooked up a lockup kit I bought for $40 off ebay. Superior K013 99411 kit. Run 12v from your fusebox (switched power) to a toggle switch, then from toggle switch to one side of pressure switch you screw into side of trans, then the other side of switch goes to pin "A" and pin "d" goes to frame ground. You can leave it on all the time or toggle it on and off. The 12 volts waiting at one side of the pressure switch connects the path to pin "a" when the 4th gear pressure triggers the connection and when 4th gear pressure falls lower than that pressure it disengages by itself. I can be in 4th and turn toggle off and on and watch my tach drop or rise 200 rpms. It feels like a 5th gear when it engages and there is a 2 sec delay. Very gentle too.

I have seen advertised that the governor cover can be drilled and tapped to screw the pressure switch in but do your research and make sure first. The kit is really easy and straight forward to install.

[mister.freeze]

Not too sure about tapping that cover. Is there another option, seeing how my case doesn’t have the conventional ports?

[YoungPup1977]

When hooking up an external pressure switch, How do you really know how it is wired in the VB ? Without dropping the pan ? What if someone else changed something in the wiring inside.....this trans has been rebuilt how many times ?

Since Mr.freeze doesnt have the external port for the 4th gear oil circuit (Located externally by the 2/4 servo), this all can be done off the 4th gear oil circuit off the VB which is very easy to do, most likely you already have the wiring there from the 4th gear oil circuit to the TCC solenoid.

The kit mentioned above can be used for internal and external usage...... wiring it to a fancy Green toggle switch on that there dash would really look cool.....your buddies would love it... make sure when ya cut the dash ya wear them there safety glasses, safety first....its as easy as when ya cut those nice holes in the bottom of your doors to put them there speakers in....getter done!!!