overdrive problem :(

2ndlovetoyota

New member
hey guys im new to the site and also to toyota this is my first toyota truck/suv but i am not new to car/truck forums so yes i have searched and searched for the last 2 weeks before joing hopeing to find a cure to my problem...i am new to toyota but work at a small shop where i work on toyota and honda everyday so i know what im doing for the most part...i have a 1990 sr5 toyota 4runner 3.0 v6 (junk munk motors) with the auto tranny its 4wd the problem is it shifts into overdrive 20% of the time and will stay in overdrive for about 5 min then kick back down i have searched and only found "my overdrive dont work when cold" thats not my problem i understand o/d will not engage till it reaches 120 degrees or operating temp i have replaced thermostat and even re soldered the known e-17 splice located behing the powersteering pump in the wireing also the previous owner (my buddy) replaced the temp sending sensor i am stuck and i need this fixed i get crappy mpg and its just annoying lol i do a ton of hwy driving thanks for reading and i hope to get some usefull advice
 
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Sounds like the O/D solenoid may be going bad.
I've had them be intermittent before crapping out altogether.
The good news is it's mounted on the outside of the trans, so replacing it is easy.
 
forgot to ad that the o/d light flashes every now and then what could that it is saying there is a code how do i check the codemean if
 
tahnks ill checkthe code tomorrow as i am done with her tonight its time to relax....i appreciate the quick replies with helpfull advice ill post tomorrow thanks
 
Sorry if this doesn't help but this is what I know:

Long Flash is increments of ten
Short Flash is increments of one

ex:
2 long flashes + 1 short flash = 21

Not sure if you need to jump a service connector to read the codes....?? Sorry....I'm pretty new to Toyota
 
So the o/d light just flashes and keeps flashing then stops I don't get how to read a code from that :(

Read the PDF I linked to. You'll have to pin out TE1 and E1 with a paperclip in the diagnostics port under the hood.

car-computer-diagnostic.jpg
 
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I am having a similar issue with my 91 4runner 4wd that I recently bought. If I get the engine warm and the park for a few minutes so that the temp really gets warm I can get on the road and the o/d works fine for about five miles until the temperature drops just slightly. I put a 195 degree thermostat in it with no luck and replaced the temperature sensor with no luck. I can disconnect the temp. sensor and it will shift fine at all times but then it is hard to start when cold and runs a little rough. I have not check for the bad splice but have read some on it, I just need to know how to locate the suspect splice. Anyone have anything that may help
 
I've heard a couple people refer to the "E – 17 splice" in regards to overdrive problems but I can't find any information on this and I have done a search here many times. I'm also having trouble with an overdrive kicking out after being on the freeway and knowing that it's up to temperature. Can someone please elaborate on where to find this splice and what to do? 89 4 runner/auto trans/v-6
 

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