2005 transmission question

[Chaser503]

Sorry if this has been addressed previously, quick search did not reveal much.

2005 LC with 133k miles.

When I rapidly decelerate to a stop, sometimes the transmission will "hitch / lurch", for lack of a better word. Then when normally accelerating from stop, it won't shift at the correct intervals - like it's stuck in 1st gear. When it does shift, it does not accelerate under normal power - seems significantly down on power in 2nd or 3rd.

I can then park, turn off/on vehicle and the transmission problem seems to "re-set" and everything goes back to normal.

Thoughts???

 

[looking4lc]

I would check the fluid level on the tranny.

 

[elk]

The 5 speed has a sealed transmission, so unfortunately you can't check fluid levels. See if hooking up an OBD tool reveals any stored trouble codes for the shift solenoids inside the transmission.

PO750 - PO770 indicate solenoid errors that can be caused by dirty or worn fluid.

 

[camino70]

Checking fluid level isn't as easy without a dip stick.

From agaisin: WS ATF Flush Procedure

Fluid Level Check (point here is to get vehicle Level and Fluid at correct temperature so that the Fluid level can be checked accurately).
15. Ensure vehicle is level
16. Jump pins 4 and 13 in the DLC3 OBD port (left of center console, but your right foot).
Flip the picture in the FSM around to mathc the way the OBD port looks when you are looking up at it - I reversed it the first few times and jumped pins 5 and 12 accidentally. Practice this ahead of time to make sure you know how to get into the fluid temperature check mode b/f jumping into the whole procedure.
17. start engine
18. go from P to N, hold for a second, then switch from D to N three times within 6 seconds and you should see A/T Oil Temp flash on the dash.
- If it stays lit, you're at the correct temperature and are ready to proceed.
- If it stays off, you're too cold and need to continue idling (or drive around the block) to warm up the fluid
- If it blinks you're too hot and need to let the fluid/car cool down
19. Once you're at the correct temperature, you leave the car idling and undo the overflow plug. You want to see fluid come out and once it's down to a trickle you can put the overflow plug back in. If no fluid came out of the overflow plug, shut off the car and add another ~.5Qt, start the car and idle for 10 seconds and then verify that fluid comes out of the overflow hole. (At first I thought I needed run through the DLC3 test again, but according to the manual you just wait 10 seconds based on what I understood).

 

[SWUtah]

Take it to the dealer and have it serviced