Auto sticks in 3 rd

[Aussie Q45a]

Q45A 1990 98000 Kilometers JDMAs long as I drive like I'm going to church all is OK. However, when I plant it and start driving like ya should the thing drops back into 3 rd and stays there till the next day, then we're back to normal again. Anyone got any ideas on what the problem could be?

[GreenQ45a]

[URL] zerothread?id=120069 [URL]

[240sick]

check your shift solenoids.?. do you have a check light on?

[PopPop]

First check your TCU for codes just as if you would check your ECU. It could be your over drive isn't disengaging or VSS ( Vehicle Speed Sensor). If you don't pull a code off TCU then most likely its something mechanically internal.

[Aussie Q45a]

[URL] zerothread?id=120069 [URL]

Thanks Green, All that wiring has been checked when I was searching for the short in my tail lights and its still good.

[Aussie Q45a]

check your shift solenoids.?. do you have a check light on?

Thanks, transmission bloke checked the shift solenoids OK. No check lights or warning lights at all ????

[Aussie Q45a]

First check your TCU for codes just as if you would check your ECU. It could be your over drive isn't disengaging or VSS ( Vehicle Speed Sensor). If you don't pull a code off TCU then most likely its something mechanically internal.

The transmission bloke bypassed the ECU with a gadget he sat on his lap with a cable out the window and under the car. He recons that the transmission is ok mechanically as he was able to go through all the gears with his gadget. Then on the other hand he couldn't find anything wrong with the ECU either. I'll try to find someone who is able to check the "SPEED SENSOR" Thanks for the tip PopPop