Tranny acts like it is 2lo?

[flyingwil]

My 2001 DC acts like it is 2Lo when the temps drop below 30°F. It has a high RPM and doesn't want to move.

I have done the grey wire mod, and double checked that, and everything is OK there. The ATF in it has about 20K on it, and looks clean from the dip-stick.

I am thinking of doing a flush on the ATF, but I:

• Do not know how much ATF to use since I have the TRD Tranny Cooler,
• Do not know which ATF to pick (was looking at Valvoline 75K ATF or Toyota)
• Can not find a good write up for a flush since I have never owned an auto before this!

Anything else I should be looking for?

 

[slooowr6]

Does it go back to normal after heat to normal operation temp? ATF should last longer than 20k.
________
drug testing

 

[flyingwil]

Does it go back to normal after heat to normal operation temp? ATF should last longer than 20k.

Yeah, goes right back to normal... it is only for about the first 500' of driving on a cold start up, and if the temp is below 40°F to 30°F.

 

[detailbarn]

my 01 did that it actually may not be the tranny. its sounds like the throttle position sensor. this may not show on the check engine light right away, mine did not show for months but on a cold morning it would drag like a dead dog. When this happens do you give it more throttle but it does hardly go anywhere?

 

[detailbarn]

forgot to ask how many miles do you have?

also if you do need a tranny flush here is a site with some great info on that, toyota specific too. http://www.gadgetonline.com/TransFlush.htm

 

[erin]

Wil , are you parked outside at night? Have you tried leaving it come up to temp first? I would think others in cold climates would complain of this alot more, makes me think it could be something with the throttle also. I would think if it was a common prob, Scott would notice much more in his location.

 

[Grim Reaper]

I am going to give you my standard Pirate4x4 Reply.


GET A FREAKING FACTORY SERVICE MANUAL!

The FSM is awesome If you do some searching on the Toy forums there is a good chance you may be able to score a PDF version for free of for cheap.

I don't know a lot about Toy autos but that one I do know is computer control. Like was pointed out this may well be a sensor issue. The FSM will have a full trouble shooting chart to walk you through diagnostic checks to isolate the problem. This could be TPS, VSS (speed sensor) or a sticking valve or solenoid in the transmission.

 

[p1michaud]

Transmission Flush

[*]Can not find a good write up for a flush since I have never owned an auto before this!

Will,
This is a decent write up, keep in mind it's for A340F transmission.

GSGALLANT is one of my friends and I helped him out. Not bad, took about 3 hours with both of us taking our time.

Good luck,
Cheers :beer:,
P

 

[Desertdude]

I remember reading something about this ( ttora) or here?

IIRC it is a normal operation of the tranny in certain conditions

I have no real facts to back it up - other than a feeble memory :smiley_drive:

 

[slooowr6]

If all is fine after driving 500' I don't think you NEED an ATF flush, My 06 Taco I just got drives a little funny when it first start in the morning after sitting on the driveway over night, I'm in San Jose, CA so the overnight low is around ~35. The Taco will rev up to 1500rpm and stay there for awhile to warm itself up, if I start driving at this time the tranny feels like it's hunting for gear and feels like in 4LO. After it "think" it's warm the idle will drop to 600-500rmp and it drives normal from this point.
Try let the Taco warm up for 1-2 minutes in the morning see if you still feel the same.
________
full melt hash

 

[flyingwil]

I am going to give you my standard Pirate4x4 Reply.


GET A FREAKING FACTORY SERVICE MANUAL!

The FSM is awesome If you do some searching on the Toy forums there is a good chance you may be able to score a PDF version for free of for cheap.

I don't know a lot about Toy autos but that one I do know is computer control. Like was pointed out this may well be a sensor issue. The FSM will have a full trouble shooting chart to walk you through diagnostic checks to isolate the problem. This could be TPS, VSS (speed sensor) or a sticking valve or solenoid in the transmission.

Got an OEM one... It doesn't include the tranny cooler!

 

[Mlachica]

Now I haven't done any research on this, but here's my theory.

BTW, both of my taco's do this, and I think all taco's will do this when the water temp hasn't reached a predetermined temp. And I think it does this (revs higher) to get the water temp to it's normal operating temperature quicker.

And as far as a tranny flush, I always have the dealer do it, and I use the toyota fluid. If you simply drain fluid from the pan you'll only drain a very small portion of it. Toyota uses a pump to actually flush and replace all of the old fluid.

 

[flyingwil]

And as far as a tranny flush, I always have the dealer do it, and I use the toyota fluid. If you simply drain fluid from the pan you'll only drain a very small portion of it. Toyota uses a pump to actually flush and replace all of the old fluid.

How much does this normally cost you?

 

[Grim Reaper]

Got an OEM one... It doesn't include the tranny cooler!

More meant that for the shift issue.

Tranny coolers don't use much fluid. Probably a pint additional.

As for the flush..What most places do with the "machine" is that disconnect the cooler and let it pump into a cylinder. the opposite side of the cylinder has fresh fluid in it and it forces the fresh fluid back in the return line. Best case those change about 80% of the fluid. There is a second style where fluid is forced through the pickup tube but its rare to find a place that does this method.

The fluid in the torque converter generally cant be completely changed.....Now some manufactures do put a drain plug on converters but I don't know if Toyota is one. Those you can drop the pan and drain the converter and get 95% or better but really draining a converter and having to refill it has risks so even if the converter has a drain...I personally don't think I would drain it except if I was removing the transmission.

Here is a pretty good little write up about flushing transmissions and more on the machine.
http://www.gadgetonline.com/TransFlush.htm

 

[Mlachica]

How much does this normally cost you?

My local dealerships usually put out coupons to have it done for 129