R33 (auto) slipping out of gear

[ZILLAR5]

Hi everybody !~

i am experiencing a problem with my auto.. started when i was doin 100 km on the freeway, it changed into the overdrive gear, dropping from revs from 2750 to 2500. Then without accelerating or decelerating it changed back bringing the revs back to 2750, and it does this occasionally.

Last week, under normal driving it changed from 3rd to 2nd ???

I was told to check for dirty plugs on the Throttle Position Switch, which i have cleaned and changed nothing. I have check oil levels, color and auto diagnostics which flashed 10 - all clear ??

This forum has been a wealth of knowledge so far and I hope it can help me now.

Thanks in advance !

[knore]

Change your auto fluid will probably fix it unless there is a problem with the autobox

[r33fred]

Had the same problem in my s 2. r33 auto, she'd go to top gear and with very little throttle kept changing down. Driven me mad - kept changing all the time without any change to my throttle position.. Turns out the a/t computer was in limp mode... Turned out that the throttle positioning sensor mounted on the throttle body needed adjustment. Had to turn it to the left slightly. Best way to test it is to disconnect the plug to it - the revs will lift and drop down. Re plug it. rotate the sensor it left and right, what you'll find is that rotate right the revs will pick up at idle, keep rotating it left until the revs at idle drops and is at correct revs and set it there. Unplug the connectors and re plug to ensure that revs are still right at idle. then test drive it. That fixed my problem. No further trouble with auto box.. Run good synethic trans fluid hey.. like castrol tans z. See ya.

[knore]

Had the same problem in my s 2.  r33 auto, she'd go to top gear and with very little throttle kept changing down. Driven me mad - kept changing all the time without any change to my throttle position.. Turns out the a/t computer was in limp mode... Turned out that the throttle positioning sensor mounted on the throttle body needed adjustment.  Had to turn it to the left slightly. Best way to test it is to disconnect the plug to it - the revs will lift and drop down. Re plug it. rotate the sensor it left and right, what you'll find is that rotate right the revs will pick up at idle, keep rotating it left until the revs at idle drops and is at correct revs and set it there. Unplug the connectors and re plug to ensure that revs are still right at idle. then test drive it. That fixed my problem. No further trouble with auto box..  Run good synethic trans fluid hey.. like castrol tans z.   See ya.

Is this what your talking about?

[ZILLAR5]

thanks 'r33fred' i'll give it a shot !!

btw i'm using transmax Z..

cheers !!

[r33fred]

Yeah mate the throttle position sensor is the one on the image.. Let us know how you go and if that sorted the problem.