Transmission won't downshift

[PhatRoyale]

I have a 97 Corolla with 4-speed auto w/ OD and lately it's been refusing to downshift, even with the gas pedal floored there is a 4 or 5 second delay until it starts accelerating.

It feels very sluggish and I can't get up to speed on the highway quickly enough to merge safely. Any help is appreciated.

[w203]

Change in tranny fluid might be beneficial.

[toyomoho]

See if the engine/trans setup has a downshift throttle cable going from the throttle pulley to the trans. This tells the trans the throttle is fully open. The cable can get out of adjustment.

[PhatRoyale]

The transmission fluid and filter was just changed a few months ago.

How would I go about adjusting this cable? Where can I find it?

[crypticlineage]

Just a thought: May be you should also clean the throttle body and plate? Google is your friend.

[toyomoho]

When driving on a hwy the trans should kick down when you floor the pedal, if not there is a problem. Start looking at the throttle body pulley there may be two cables, one going to the pedal, the other to the trans.

[PhatRoyale]

Checked out the cables, there seems to be no slack in them at all, no need to tighten.

Is there any other possible culprit?

[daniel2002p]

check the level of ur tranny fluid again, make sure there is enough in there after the change

D

[PhatRoyale]

Just checked the level and everythings okay.

What else can it be?

[PhatRoyale]

Ttt