lock up woes(need help ASAP)please?!

[y26]

hi guys, heres the short, car was converted non lock up

dummy valve, and check ball removed from input shaft

reinstalled factory lock up valve,moved freely

reinstalled input shaft with checkball

new pats 12" lock up converter

ok here are the symptoms

seems to lock up right after first gear,almost feels like 3 shifts

gluging like a bugger

even more funny is, doing it even with conector unhooked from tranny

also even though feels like its locking up, highway speeds it seems like its not locked up, does this make sense??

like around 2500rpm + apx around 65-70

ok so as we come to a stop, she starts glugging like she is locked then last minute frees up

no matter connector on tranny hooked up or not

any info would be greatly appreciated, this is my daily driver and i am without transportation till this issue is resolved, i am worried that this may harm something to keep driving

also the shifts are hard like its locked up

thanks

Steve

 

[y26]

TTT

 

[MeanBuicks]

Sure sounds like a simple case of a bad TCC solenoid. They get ornery and stick regardless of being energized or not. I presume the one you're using is old?

Pop a new one in there and see what happens.

 

[WE287GN]

how to test

got three sitting here out of donor trannys

i read that resistance across coil should be in the 24 -26 ohm area


is there a way to energise them to make sure before installing

to they get a full 12v???


thanks

 

[MeanBuicks]

Unfortunately, testing outside the vehicle will only tell you so much about the solenoid. Your resistance check verifies that the diode and the coil are within spec.

Applying 12 volts and ground to the appropriate terminals will allow you to test the internal check valve assembly with compressed air. Air passes through when de-energized & does not pass through when energized.

Passing those two tests gets you close. Unfortunately, the solenoids do have a propensity to stick mechanically when they get warmed up. That's when they act like described above. I suppose you could heat one up somehow and test it again but if it's an original, 14+ year-old solenoid, it's a better bet to simply replace it with a new one.

 

[WE287GN]

thanks Greg, your right why mess with it, guess they are cheap enough ,what do they go for?

 

[MeanBuicks]

A transmission parts supplier should have the Teckpak brand solenoids for around $20. It's a better design than the original so it's less likely to stick as it ages.