trans problem

[lil89ram50]

hey i have a 250c transmission (M31). i just bought the truck. its a buick 231 and a 250 c in a mazda b2200. well i start it up, runs good, put into reverse or any drive ger, and the trans drags the motor down. i have tried lots of things. i even changed the trans filter and fluid. nothing. pulled pan again, disconnected the tcc, nothing. disconnected the brake booster, and plugged the vacume line there, still nothing. tried putting straight power to the tcc, still nothing. then i bought a new torque converter, and it still doing the same thing. it starts and runs good, but when i try to move it, its loke the tq converter locks up. it is snowing out now, so i pushed it out sede, and i started it, and put it in drive, and it didnt kill out, just started spinning the tires. im confused what is wrong? or what should i check next. about to buy a new trans, but am scared it is something simple and new trans will do the same.

 

[G-Body_Vet]

hey i have a 250c transmission (M31). i just bought the truck. its a buick 231 and a 250 c in a mazda b2200. well i start it up, runs good, put into reverse or any drive ger, and the trans drags the motor down. i have tried lots of things. i even changed the trans filter and fluid. nothing. pulled pan again, disconnected the tcc, nothing. disconnected the brake booster, and plugged the vacume line there, still nothing. tried putting straight power to the tcc, still nothing. then i bought a new torque converter, and it still doing the same thing. it starts and runs good, but when i try to move it, its loke the tq converter locks up. it is snowing out now, so i pushed it out sede, and i started it, and put it in drive, and it didnt kill out, just started spinning the tires. im confused what is wrong? or what should i check next. about to buy a new trans, but am scared it is something simple and new trans will do the same.

Read this and see if it helps you at all.
http://autorepair.about.com/cs/troubles ... 61701a.htm

 

[tc1959]

hey i have a 250c transmission (M31). i just bought the truck. its a buick 231 and a 250 c in a mazda b2200. well i start it up, runs good, put into reverse or any drive ger, and the trans drags the motor down. i have tried lots of things. i even changed the trans filter and fluid. nothing. pulled pan again, disconnected the tcc, nothing. disconnected the brake booster, and plugged the vacume line there, still nothing. tried putting straight power to the tcc, still nothing. then i bought a new torque converter, and it still doing the same thing. it starts and runs good, but when i try to move it, its loke the tq converter locks up. it is snowing out now, so i pushed it out sede, and i started it, and put it in drive, and it didnt kill out, just started spinning the tires. im confused what is wrong? or what should i check next. about to buy a new trans, but am scared it is something simple and new trans will do the same.

Read this and see if it helps you at all.
http://autorepair.about.com/cs/troubles ... 61701a.htm

He disconnected the TCC

 

[megaladon6]

you may have to pull the pan and then pull the TCC solenoid valve itself. i'm assuming that it's stuck on internally. it's not a hard job at all. but it can come out FAST and with fluid behind it! beware lol

 

[lil89ram50]

ok ill try pulling it off completely...

 

[G-Body_Vet]

i'm assuming that it's stuck on internally.

That's what I was thinking even after he disconnected it from 12V. When solenoids go bad they remain stuck in one position and having power or not wouldn't matter.

Can you drive it completely removed? Is there a check valve above the solenoid after you take it out? I haven't touched one in some years, but I do remember them having an o-ring at the top of the shaft. I'm sure the last thing you'd want is any kind of loss of pressure if that ends up being the case.

 

[megaladon6]

well i didn't mean take it out and leave it out!
i meant to pull it and see if it works. IIRC it's normally open, closing it causes fluid pressure to build up and apply the clutch. i do know that you can just apply 12v power and ground to it for the test. you look for 2 things when triggering power--1)a click of the solenoid triggering (most likely you'll also feel it), 2)you should be able to blow through the valve when open and not when closed.

 

[G-Body_Vet]

well i didn't mean take it out and leave it out!

Hey you never know!

I've heard crazy ideas in the past so I had to make sure.

 

[megaladon6]

good point!

 

[anakputa]

something is broke internally. take to a transmission shop.