bigpest88

I'm a newbie here, but I'm also a member pirate4x4 and I was wondering if anybody can help me with my tranny problem. Here it goes:

I have a 4x4 95 4Runner with an auto tranny and the stupid tranny wont shift into the overdrive when Im driving. I can go drive it for about 3-5 mins to let it warm up stop, turn the truck off for a minute, take off then it will shift into overdrive. But if I dont stop, I can drive almost 15-20 miles with out the stupid thing shifting!!! And I hate it if I stop and go somewhere for about 30 minutes after warming up, it wont ลลลล again into O/D. Also if im driving on the highway for about 20 minutes doing 60-70, it will kick it out of O/D. Ive already replace my thermostat, powerflushed the cooling system, powerflushed the tranny, and installed an new tranny filter too. All these thing have helped a little but still nuthing. I took it to the dealers, and they say its normal and show no codes. I too pulled out the codes, and no codes show up. WHAT WRONG WITH MY TRANNY!!!

littlerunner

could possibly be tps,controls shifting according to throttle input,may not set ce light

bigpest88

What the ce light????

regularguy412

CEL = Check Engine Light. Could also be one of the fluid temp senders that are ON the the tranny case.

Mike in AR

bigpest88

Yeah my check engine light is on but i only have codes 25 and 71. I know my EGR vale needs to be replaced, and my oxygen sensor is connected wrong. But dose this have anything to do with my tranny??? How can I find out if one of my fluid senders on the tranny???

regularguy412

Look here for more info:

http://personal.utulsa.edu/~nathan-b...34electron.pdf

Mike in AR

snap-on

id say get rid of any CE lights, and get it running right.

never know what the trans ECU thinks it needs to do when its getting odd electrical readings...

definintly sounds electrical...

celica

do a search, there was another guy on hear with the same problem, can't remember the solution though

bigpest88

I've looked at all the pages and post, but nobody has really fixed their problem.

bigpest88

Anybody...

mendozart

Mine was my overdrive solenoid. It was getting stuck. It is external so it was an easy fix. I just made sure that the voltage was there when the overdrive button was selected, which it was. I could audibly hear it clicking, but at times it wasn't actuating. I agree with getting rid of CEL first though.

bigpest88

I would get rid of the light, but the stupid EGR valve cost too much.(I is a koolege student...enough said) How much was the overdrive solenoid, and where did you get it?

mendozart

I've got a buddy at Garden Grove Toyota in So. Cal. I get his cost on parts. I think it was about $130. I actually tried to get a non OEM part, but it looked totally different. I decided to stick with genuine.

bigpest88

YIKES!!! thats alot of $$$

mendozart

Yeah, don't buy until your positive it's the problem. Dealer won't take electrical parts back.

bigpest88

Where is the o/d solenoid on the A340H?