C4 Problem

[jmantle]

Originally Posted by Dave Noll

No dice. As I said, it goes in & stays in gear now. But I only have 1st, 2nd, & reverse, no 3rd at all & sometimes it freewheel's in low on decel. From a clutch/band app. chart the Forward & the High clutch are engaged in 3rd. I have 1st & 2nd so that rules out the forward clutch & reverse works so it can't be the high clutch. No bands in 3rd. The low sprag overruns In 2nd & 3rd Valve body ? What is that spring & plug that the screen holds in ?

The spring and plug are the throttle pressure limit valve and spring. Most manual shift valve bodies do not apply the rear band in 1st, most "shift kits" do, what do you have for a valve body? If the filter was plugged with clutch material, I suspect that's why you have no high gear, all the high clutch lining is in the filter. You may still have reverse but only because the pressure is higher.

Jim Mantle
V/SA 6632

[Dave Noll]

Thank you for the input, really appreciate it. The valve body is a stock ford with a B&M kit in it. The vacuum modulator is not hooked up. The filter wasn't plugged with clutch material, it looked more like thrust washer. I checked line pressure & it pegged my gauge (100 psi).

[C and W Racing]

Originally Posted by Dave Noll

Thank you for the input, really appreciate it. The valve body is a stock ford with a B&M kit in it. The vacuum modulator is not hooked up. The filter wasn't plugged with clutch material, it looked more like thrust washer. I checked line pressure & it pegged my gauge (100 psi).

You probably answered your own question. If you had a thrust washer fail, You would now have excessive end play which can affect location of drums to sealing rings and cause fluid pressure to bleed off.
Chuck

[Bill Harris]

A 100psi gauge ain't gonna cut it.. you will likely see almost 300 in reverse. If you have brass on the filter, it's tear-down time.

[mattexner]

The B&M kit you put in it a manual valvebody kit or a street and strip kit?

[Dave Noll]

Originally Posted by mattexner

The B&M kit you put in it a manual valvebody kit or a street and strip kit?

mattexner-Street/Strip kit.

[mattexner]

Before you pull it out, hook the modulator up.

[Dave Noll]

Found the problem's. The forward planetary was destroyed. Metals shavings ALL thru the valve body enough so that only a few valves moved. Thank you ALL for the help. I learned from you.

Dave