Re: Calling all 700R4 Experts!
 

Really good stuff there. It will take me a while to get through it all.

Re: Calling all 700R4 Experts!
 

Very cool to see that it looks like you are on the right track to getting this properly addressed; good for you!!

Re: Calling all 700R4 Experts!
 

https://www.youtube.com/watch?v=uaPzcSFCr_E

You may be able to borrow this gauge from Autozone or Oriellys for free.

Line pressure test... run the hose through a hole in your firewall and check pressure while driving. I may do this myself. There is a chart floating around here somewhere to tell you what you should read. I'm still learning so if you already know this and it seems common sense, bare with me.

Re: Calling all 700R4 Experts!
 

http://67-72chevytrucks.com/vboard/s...d.php?t=169445

This link shows you pressures you should have. I would think that at 45 mph right before 4th is supposed to engage, you are suppose to have a min of 90-100 psi and a max of 190-230??? Again, im learning so do some reading....

Re: Calling all 700R4 Experts!
 

https://www.youtube.com/watch?v=Av6Xh8Fwuy0

Real world test in all gears.....

Re: Calling all 700R4 Experts!
 

Looking at the link to the cable you have: I've never seen a TV cable with the brass thing at the end.

There are 5 types of OE TV cables shown here
Attachment 1786904

They are of varying lengths but again none have the brass thing. I think you have a Th350 kickdown installed. Google search image shows this, with brass thing.
Attachment 1786907

Also I know you have the carb throttle corrector piece but do you have the cable bracket corrector?

https://www.ebay.com/itm/TH200C-2004...-/322530942176

Re: Calling all 700R4 Experts!
 

This does have the brass thingy, and not the TH350 end.

Re: Calling all 700R4 Experts!
 

Driving to work this morning, the trans didn’t shift into 4th. At one point, it felt ready to, so I gave the gas a quick whomp and into 4th it went. Went into 4th as it should after that. To me, that reinforces the sticky valve theory. Low pressure could also be the problem, I admit. I’ll try to find a port and see if I can borrow the gauge. Also, as stated before, it shifts better when cold, but won’t go into 4 until very warm.

Re: Calling all 700R4 Experts!
 

OUTTA here....

Re: Calling all 700R4 Experts!
 

How far a drive is work?

Re: Calling all 700R4 Experts!
 

Are you using Dextron 3?

Re: Calling all 700R4 Experts!
 

You started having trouble after a fluid change so im wondering if the viscosity of the ATF has anything to do with it? When its warm its thinner and works, when cold its thicker and doesnt. I wonder if this effects pressure. I would also be driving 30 mins and checking the level often. Almost sounds a quart low to me. But im just thinking out loud

Re: Calling all 700R4 Experts!
 

I think the video in post #105 matches what a couple of links reference on pressure readings.

Re: Calling all 700R4 Experts!
 

If you stomped on it and it went into 4th, doesn't that sound like the cable being too loose at normal throttle and when stretched a tad (while stomping on it) the pressure goes up enough to shift?

Re: Calling all 700R4 Experts!
 

the port is on the drivers side and is also a port to measure trans temp. If I do my pressure tests, I might as well put a temp sensor in it when im done and run a temp guage.

Re: Calling all 700R4 Experts!
 

Now is this thread about your activities or is it for MR freeze...maybe you can add some fancy buttons to your dash too....just a thought... Have a great day folks !!!

Re: Calling all 700R4 Experts!
 

Nope, but I was pointing out where to hook up a temp gauge......

Re: Calling all 700R4 Experts!
 

I agree. Cable is wrong and brackets are wrong. nothings going to work right until those are addressed.

Re: Calling all 700R4 Experts!
 

Qq.............

Re: Calling all 700R4 Experts!
 

qq............

Re: Calling all 700R4 Experts!
 

Qq...........

Re: Calling all 700R4 Experts!
 

Step 1: get correct cable and brackets.

Step 2: check pressure with gauge.

Step 3: drive and adjust TV cable tension as needed for shift point.

Step 4: stop talking about this.

Re: Calling all 700R4 Experts!
 

LOL!!!!! I think the buttons on the dash are not aligned.... no wait, its the fluid, to thick of fluid...it works when its hot...gots to be the fluid...and its exactly a quart low.....

Re: Calling all 700R4 Experts!
 

Actually wait lol

Step 1: replace 700r4 with Th350.

Step 2: talk about why the kickdown cable is wrong.

Step 3: turn K5 into flintstone-style foot propelled truck.

Step 4: stop talking about this.

:lol:

Re: Calling all 700R4 Experts!
 

I think the answer was in post #100, I copied and pasted this from post 100 below....
--------------------
"Wow. Well... for starters, the short piece of shroud that actuallu goes in to the transmission is bigger than the “correct” cable, meaning the hile is bigger and the cable won’t seal. "
=========================================================================
the hole is bigger and the cable wont seal.......I would love to see a pic of the cable bolted to the transmission......really sounds like a T350 cable bolted to the 700R4....not even sure it can be done, but .........

the T350 cable is smaller in diameter at the trans than a 700r4 TV cable is...thats why the "HOLE IS BIGGER AND THE CABLE WON"T SEAL "

DOES YOUR TRANS LEAK ?
LOL!!!!!!!!!