THRASHER

My 86 4runner Is Starting Out In 3rd Sometimes 4th Gear ,i Manually Shift My Auto And I Have Tested A Lot Of The Electrcal All Exept The Trans/transfer Thermo Switch Sensor... Could That Thing Cause The Solenoids To Not Lock Up??? I Know It Wont Upshift 3rd To O.d... Without Warming Up The Tranny Oil To A Certain Temp.the Reason Im Asking This Is The Damn Thing Works Fine Once In A While. But Not Until The Tranny Heats Up Ive Pulled Codes 61,62 But I Dont Think Its The Solenoids Can They Be Intermiden??? I Have Not Checked The Speed Sensors Yet.can Anyone Help Me???. I Could Sure Use It Im No Mechanic. Thanks...

meswoleshane

Just get new solenoids. I replaced mine in my backyard in about an hour. Works great now.

meswoleshane

From what I've seen the ecu will throw codes because its not shifting right. After replacing mine all the other codes stoped going off.

DH6twinotter

Meswoleshane--did you use OEM or aftermarket solenoids? My 4Runner looses 1st and sometimes 2nd when it's warmed up. Pretty sure it's my #1 shift solenoid.

Daniel

meswoleshane

I used the solenoids out of a jeep. they have the same "read VERY similar" auto tranny. I got them from a u-pull-it junk yard for $6, $2 each. bolt right in and the connections are the same. Their overall size is a little bigger though. They work great, and its awsome not to haft to shift manually and start out in 2nd or 3rd.

meswoleshane

BTW some of the part #'s cross from the toyota a340 and the jeep aw4. The solenoids are also the same solenoids used in alot of vehicles as well.

steelydan

THRASHER:
The ECU uses the coolant temp to determine upshift to OD and torque convertor lock-up. Verify that your Coolant temp sensor wires are not corroded.
Shift solenoids can be NO (normally open) or NC (normally closed) be careful when purchasing from a recycler that you get the right ones that you need. FWIW I had shift problems with mine code 61 I think. I removed the shift solenoid and re-soldered connections, tested on the battery and it worked. Re-installed and it has been good ever since.

THRASHER

Thanks, all u guys for the helpful advice.- UPDATE- I actually made that call to the damn stealership yesterday.there going to charge me 196.00 for 1 solenoid good thing its not the lock-up!!!