Acceleration Issues (3 Viewers)

[Skadushums]

Hello all! Wondering if I could get some minds on this"
Accelerating in my KJJW78, I get good shifts on 1--2, but it almost seems like it stays in 2nd. I turn O/D on, but I dont see the rpms decrease and the O/D light does not illuminate. I was thinking perhaps I need to replace my O/D solenoids? Megazip seems to be all out of them however. Thoughts?

 

[AirheadNut]

You should be getting another shift, 2-3, before overdrive will kick in (basically 4th gear and torque converter lockup). What happens when you manually shift through the gears when accelerating? Definitely could be solenoids, the O/D solenoid was bad on my first Prado about 10 years ago, I replaced all three solenoids with a kit I got on eBay. The A343f and A340e use the same solenoids IIRC.

 

[Skadushums]

You should be getting another shift, 2-3, before overdrive will kick in (basically 4th gear and torque converter lockup). What happens when you manually shift through the gears when accelerating? Definitely could be solenoids, the O/D solenoid was bad on my first Prado about 10 years ago, I replaced all three solenoids with a kit I got on eBay. The A343f and A340e use the same solenoids IIRC

You should be getting another shift, 2-3, before overdrive will kick in (basically 4th gear and torque converter lockup). What happens when you manually shift through the gears when accelerating? Definitely could be solenoids, the O/D solenoid was bad on my first Prado about 10 years ago, I replaced all three solenoids with a kit I got on eBay. The A343f and A340e use the same solenoids IIRC.

unfortunately I have an automatic and can’t shift past second. I get up to 100 km and I don’t see the o/d kick on and I’m at about 3x rpm’s. Do you have another source for the solenoid? Mega zip is out. Thanks for the help dude!

 

[AirheadNut]

You should still be able to manually shift the automatic through the gears: turn the O/D switch off, manually perform the 1-2 shift and the 2-3 shift (2-D), and then turning O/D back on will engage 4th (overdrive) above about 70-80km/h if I remember correctly. If you don't get noticeable shifts on these gear changes then it is likely one of your solenoids is bad. Also, if I am not mistaken the torque converter should lock up in 3rd gear with O/D off, but it has been about 9 years since I've had an A343f equipped Prado.

Replacing the solenoids is not difficult, and as I recall they're not terribly expensive parts either. It is a good opportunity to refresh your transmission fluid too.

 

[GTSSportCoupe]

Check your ECU for failed/leaking capacitors. It can cause transmission issues.