Need answer if TB ok...

[McLin]

Hi,

i can buy cheap an Ford Thunderbird, but the rear gear is not working, its an 1990 with 93500 Miles....

Its an Automatic Transmission an the rest are fine...

It cost me 250 $ is the Transmission Borke or can repair it?

[Decipha]

what does the trany have to do with the rear diff? if the rear diff is bad replace it, for $250 and the car runs except the bad rear diff i'd take it, just make sure the transmission is good before u get it

simple test, start the car up and put it in gear, see if the driveshaft turns

[RexNfx400]

Sounds like you mean reverse gear, maybe? If thats what you mean. The a test would be, to drive the car forward in drive, to about 15-20 MPH. Then, move the shifter lever to 1st/low gear while you let off throttle. It should back shift and slow you down(engine braking) If it just nuetrals/floats, then biggest possiblity is the low/reverse band is broke. The transmission would have to come completly apart. There is a piston that drives the band but they don't have problems, usually.

[McLin]

Thx for answer....

Foward it drive perfectly, incl. Motorbrake when i move to 1 or 2...
When i put in R no jerk happens...

[RexNfx400]

Sorry, can't think of anything else. Other than, the "reverse input" clutch is out. Which still means the trans needs to come apart, somewhat.

[McLin]

So its reparable?
Or i need a new transmission?

[RexNfx400]

It needs to be rebuilt or replaced.

Maybe some one would repair it. But most transmission shops will not just repair the defective reverse input clutch be cause of liabilty on condition of the rest of the transmission. See, the transmission has to come out of the car and the pump will have to come off. Then pull out the first drum to repair clutch. Also, when you only repair the trans, you really don't get a chance to inspect why the clutch has failed. So you run a great risk of repeat failure. Its called "cause and effect". Defective clutches are an effect. So then you must find the cause. Which can be anything from driver abuse to a hydraulic leak inside the transmission and soo much more.

[McLin]

ok i buy the car, so i need a new used tranny, so for what price will it trade?

[McLin]

ok, i get today my new tb...

Now i have time to look about the Transmission.
When the engine ring and put it on "R" or "N" then you cant move the car Backward, but is the engine off then you can...

Is it good or bad?

[RexNfx400]

The "forward clutch pack" has welded/fused itself together(probably from low fluid level). The transmission is contaminated and needs complete rebuild. Or different transmission. When you shut it off, there is no more "bind up" in reverse and nuetral. Basically, its trying to go forward and backward at same time. This is because, there is no fluid pressure on clutches once the engine is off...Thats probably about the best diagnostic I could give, over the net. It would be good to make sure with your local transmission guy though. Good luck...

[McLin]

ok thx...

hope its cheaper then a new/used one...