trans problems 1st to 2nd automatic

[96 cobra vert]

Hi all, The car sat for about 3 years in a garage. I finally got to rebuilding the motor,got it running great untill I went to test drive it.It took forever to shift from 1st to 2nd .When I take off from a dead stop the engine revs up to 3k rpm and it finally starts to move.when it shifts in to 2nd it shifts normally thru the rest of the gears and down shifts thru all of the gears as well.I changed the trans fluid and filter using mobil one mercon v trans.fluid. Filled to the proper level.While the car sat for 3 years it was low in trans.fluid. Also the transmission was gone thru and shift kit installed before the engine died Does anyone have any ideas of what can be wrong.can anyone help!!!!

[lowflyn]

Sounds like your torque converter is going out...or gone.

[Brent]

Check your Throttle Positioning Sensor.

[DarkShadow]

Sounds more to me like it might be a shift solenoid, but I believe that a solenoid usually controls 2 gears...

After it gets done revving up, does it actually engage in first or does it go straight to second?

[96 cobra vert]

The car will not move untill it reaches the 3000 rpm range at that point it will engage in first.

[96 cobra vert]

I also get a whistle sound or maybe a vac. leak sound when I shift it into drive or any of the forward gears but not in reverse.

[96 cobra vert]

Quote: Originally Posted by Brent Check your Throttle Positioning Sensor.

what would the tps have to do with it?

[Brent]

It controls shift points. If it's bad or not aligned correctly it will throw off your shifts and cause it to not shift unless you lift off the gas. It happened to me.

[96 cobra vert]

Quote: Originally Posted by Brent It controls shift points. If it's bad or not aligned correctly it will throw off your shifts and cause it to not shift unless you lift off the gas. It happened to me.

hey thanks a lot I would never of guest that!

[96 cobra vert]

I checked out the T.P.S it seems to be in good working order.Is there any thing else I should check out?

[96 cobra vert]

anymore ideas someone has got to know something.

[Brent]

If its not the TPS then I'm going to side with DarkShadow

[DarkShadow]

Just throwing more ideas out:

Do you know if the shift kit was installed 100% correctly?

How long did it remain in running condition after the kit was installed?

Do you remember it doing anything funny before the motor problems?

All fluids if left to sit over time lose their ability to function like they should. They begin to collect and cause buildup. You might need to have the tranny flushed, instead of just new fluid.

If it's not a solenoid or TPS, it's going to be something internal. A stuck or sluggish valve etc. If you've seen the inside of an auto tranny it's hard to believe they work as well as they do. It's just sounds to me like it's taking the transmission an extrememly long period of time to build up the needed pressure to shift, or it could even be a failing clutch pack.

My personal opinion, I think it's going to be a band, clutch pack, or something else mechanical relating to that gear only being that the rest of the gears seem to work fine...assuming the shift kit was installed correctly.

[DarkShadow]

Doing a little Googling and I found that there were a few problems with the accumulator springs and piston that seem like they could relate to your problem. These problems were remedied in `98. When failing they don't allow enough pressure. I also read a few things on the solenoid causing similar problems so you might want not want to rule that out.

[Herbstang]

check the adjustment on the tv cable also it could be a sticking governor,
or sticking valves in the valve body. Might want to try some trans additive to free them up you want something that will flush the passages. then change fluid.