Tranny problems

[250for750]

My transmission (auto) in my 1991 es250 has been acting up as of late. When I crank the car and put it into gear (any) it revs up to about 1500rpms, hesitates, and then catches and the car jerks violently. What could be the problem here? I changed the tranny fluid about 1000 miles ago and it was doing this even before that.

[Doctor J]

This can be sign of low pressure [as forward and reverse are acting the same]
make sure that the fluid level is normal;
second, drop the pan and inspect filter [remove it ] and pressure regulator the spring loaded spool valve next to filter.

[250for750]

Well I don't really have a way to check the filter or any of that because the apartment complex I live at doesn't allow and fluids to be changed on the property. But I'll look into it. Thanks!!!!

[Doctor J]

try to do it ASAP.

[toyomoho]

Engine idles OK in Park and Neutral but revs up when put into any gear without any throttle input?

[250for750]

It seems as if the engine tries to idle high until it's warmed up, regardless of what gear it's in. And yes it revs up a few hundred rpms above what it's idling at when I put it in gear. Also when I put the car in park then ease off the brakes the car continues to roll forwards a few inches. It's really starting to piss me off.

[250for750]

The fluid level is above the hot mark when cold. I think it might be overfilled, but it was acting the same before I changed the fluid like I stated before. When I drop the pan and filter, what am I supposed to be looking for on that valve? Not much detail on that.

[white90dx]

Originally Posted by 250for750

It seems as if the engine tries to idle high until it's warmed up, regardless of what gear it's in. And yes it revs up a few hundred rpms above what it's idling at when I put it in gear. Also when I put the car in park then ease off the brakes the car continues to roll forwards a few inches. It's really starting to piss me off.

Definitely make sure the fluid level is correct. Being off just a little will definitely hurt the operation of the transmission (my A540 was about 1/2 quart high and it wouldn't downshift coming to a stop sometimes).

Regarding putting it in park... are you on a hill at all? Make sure to use the parking brake too. There is always some play forward and back while in park - you should always have the parking brake on when parking.

-Charlie

[250for750]

I know to put the parking/emergency brake on when on a hill, but I am speaking of just a few degrees of incline.

I appreciate the response. Should I just drain a small amount of fluid out and monitor it until it's correct?

[white90dx]

Originally Posted by 250for750

I know to put the parking/emergency brake on when on a hill, but I am speaking of just a few degrees of incline.

I appreciate the response. Should I just drain a small amount of fluid out and monitor it until it's correct?

Any automatic that is in park will move back an forth a few inches. Just watch in a parking lot sometimes, almost nobody uses their parking brake.

It would probably be best to suck the fluid back out the fill hole if you can find a cheap pump. Just take out a 1/4 or 1/2 quart, drive 4-5 miles, check the levels and repeat until you are at the correct level. Add a bit back if you go too far.

-Charlie

[250for750]

Originally Posted by white90dx

Any automatic that is in park will move back an forth a few inches. Just watch in a parking lot sometimes, almost nobody uses their parking brake.

It would probably be best to suck the fluid back out the fill hole if you can find a cheap pump. Just take out a 1/4 or 1/2 quart, drive 4-5 miles, check the levels and repeat until you are at the correct level. Add a bit back if you go too far.

-Charlie

I know they're supposed to have some forward/rearward movement when in park, but mine seems extremely exaggerated compared to most any other auto I've driven. I'll get on adjusting the fluid level immediately. Thanks!!!