Topic: Diffrent ECUs?

[jrock]

I just pulled an ECU from an 85 runner 5-speed and was comparing to my 85 truck auto and all the numbers are the same. I thought they were diffrent ECUs. Anyone help me out. I need to figure out the right ECU to use for my auto manual swap.

[*ROKTOY*]

Don't think it matters, the one in my truck has all the connections for auto but I have a 5spd. Guess it only uses the auto stuff when you have an auto.

[jrock [OP]]

someone told me that i need a 5-speeds ECU because if i use the autos my engine, 22re, will run rich and my check engine light will come on.
The numbers on my ECU are:
89661-35020
175600-003 12V
10P 18P 14P
22R 02

[86bobbedtoy]

thats what I thought, I have read it on here a few times.

[*ROKTOY*]

someone told me that i need a 5-speeds ECU because if i use the autos my engine, 22re, will run rich and my check engine light will come on.
The numbers on my ECU are:
89661-35020
175600-003 12V
10P 18P 14P
22R 02

That is the exact same one I have in my truck and it works fine no check engine light.

[jrock [OP]]

Okay, I thing I will switch mine with the one I bought and see what happens.

[Cheesemaker]

Here's a link from Pirate!

http://www.pirate4x4.com/forum/showthread.php?t=247846

[Rocksurfer]

Toyota was very good about having all the wiring ready for any options including the auto, about the only model that had a different electrical system was the turbo.

[jimbo74]

Toyota was very good about having all the wiring ready for any options including the auto, about the only model that had a different electrical system was the turbo.

good to know, that means robrub00 needs to get a turbo harness for his truck....

he put a turbo computer into his truck and swapped a rte into the truck, but used the 85 efi harness, it runs like poop

[jimbo74]

Toyota was very good about having all the wiring ready for any options including the auto, about the only model that had a different electrical system was the turbo.

do you have more info on this?

[Rocksurfer]

Look at Haynes it will show you the wiring for all models if you have a 22r you have all the wiring from a standard to the SR5, if you have a 22re you have blah, blah, blah. 22rte ditto, even from 4Runner to extended cabs except for being longer it's all the same. The only one that may have major differences in senors would be the 4Runner turbo's since they had the digital dash. This one I know for sure since that is what my brother and I had, he bought a theft recovery and had a pregnant dog of a time getting the right parts.

[Rocksurfer]

Just a little more insight if you look even at a 80's 2wd Toyota pickup there is a plug for the 4Runner inclinometer and a cutout for it in the dashboard.

[jimbo74]

rob is using a 22rte from a truck, and ecu from same truck

his body harness is a 85 4runner with efi

should that be compatible? or does he need a rte harness?

[Stinky]

i tried mix-matchin ecu's after my trans swap... never found a 5-speed ecu that worked... i was told that the auto harness n 5-speed harnesses are different.... so you'd have to get the two wiring diagrams and change the connectors around so all the wires are goin to the right prongs in the ecu plug......

it seems like a pita, so i just drove it with the auto ecu, runs kinda shitty, but it runs..... i have a thread on here and pirate and the only thing ive heard was to piss with the plugs....

but i found a tbi 4.3 for cheap... soooo, fuggit.... chevy power here i come!

[jrock [OP]]

So what I gather is my ECU is 89661-35020 = 85 Std 22RE, 5 speed, w. A/C, Cruise. The ECUs will swap but I do not need to. I will need to find wireing diagrams and jump the reverse light, the shifter wires and mabey switch some plug wires around.

[86bobbedtoy]

plug wires? you dont mean spark plug wires do you?

[jrock [OP]]

I think the plugs to the ECU.

[aptoyota]

I just finished my auto to 5spd swap in my 85' 4runner, i got an ECU from a 5spd same generation. . .plugged it in and it runs like a top. I have read quite a few times that the ECU for the auto will richen your fuel mixture and throw codes. . . and also i noticed my auto ECU has a couple of additional numbers that differ from the 5spd ECU besides the main part number. I only had to splice a few wires under the hood none in the cab.

[jrock [OP]]

Mine has the same numbers.
What wires did you splice under the hood?

[Stinky]

I just finished my auto to 5spd swap in my 85' 4runner, i got an ECU from a 5spd same generation. . .plugged it in and it runs like a top. I have read quite a few times that the ECU for the auto will richen your fuel mixture and throw codes. . . and also i noticed my auto ECU has a couple of additional numbers that differ from the 5spd ECU besides the main part number. I only had to splice a few wires under the hood none in the cab.

ya, it runs super rich b/c it throws a code for the TPS (throttle pos. sensor) and doesnt have any info from the trans, saying that the trucks moving... so it constantly thinks the trucks under a constant accel, therefore dumping more fuel in than wat is needed... you CAN advance the timing, which i did for a while, i had it advanced about 16-17 degrees, it made a difference, but its not the smartest idea...b/c you get detonation and could risk blowing it up....

and you need to jumper the neutral safety switch so you can start the truck(cuz if not then the truck thinks its not in park or neutral, and wont start, so ya have to jumper it to fool the truck)

and by wires i mean the plugs in the connector, their just little tabs, you push a little plastic thing out of the way and you can pull the small spade contact out of the connector.