Toyota 22RE ECU compatability?
#1
Registered User
Thread Starter
Join Date: May 2009
Location: Delaware
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
Toyota 22RE ECU compatability?
Will the computer and wiring harness from a 1991, 2WD 22RE work for a 1989, 4wd 22RE? If not, what is the difference? I am an instrumentation tech by day and I can probably make it work if I can identify a specific difference.
#2
Registered User
Join Date: Sep 2009
Location: Adamsville, Ohio
Posts: 61
Likes: 0
Received 0 Likes
on
0 Posts
Dont hold me to it but they should be the same. I just went through the same thing but my motor was 85-87 in a 89. And I ended up buying a wiring harness from a 91. Only thing you might want to find out for sure is about the 4x4. Dont know what that would change in the ecu. I think all you have to do on the wiring harness is cut and splice in the plug.
#5
Registered User
Thread Starter
Join Date: May 2009
Location: Delaware
Posts: 28
Likes: 0
Received 0 Likes
on
0 Posts
my biggest concern is injector pulse duration. If that's the case it SHOULD just run rich or lean. Hopefully I won't run into that and if I do and thats the only issue, at least I will know I have a good computer. Then all I have to do is get the ECU flashed for the right timing and fuel curves. The knock sensor and 4wd light can suck it!! As long as i can get it to run right until next winter. Her legally tagged days are pretty much over anyway.
#7
Overall, no.
A 2wd ECU is not compatible with a 4WD truck. The 2wd does not monitor things like "4WD" and such.
IIRC, the 91 2wd is electronic speedo and the 89 is mechanical.
I'm not going to say you can't make it work but it won't be easy.
Then again, if you're pluggin a 91 ECU and harness in an 89 truck... you might have to do other things to make the 89 truck pass 91 emissions / smog.
A 2wd ECU is not compatible with a 4WD truck. The 2wd does not monitor things like "4WD" and such.
IIRC, the 91 2wd is electronic speedo and the 89 is mechanical.
I'm not going to say you can't make it work but it won't be easy.
Then again, if you're pluggin a 91 ECU and harness in an 89 truck... you might have to do other things to make the 89 truck pass 91 emissions / smog.
Trending Topics
#9
Registered User
Join Date: Aug 2010
Location: Willamette Valley, Oregon.
Posts: 73
Likes: 0
Received 0 Likes
on
0 Posts
I don't understand why you want to do this in the first place. Don't get me wrong I understand saving on money if you already have one but just find a harness for that year and save the headache. On the other side it won't take long to install the harness maybe just plug it all in and give it a try.
Thread
Thread Starter
Forum
Replies
Last Post
MMA_Alex
86-95 Trucks & 4Runners (Build-Up Section)
25
04-18-2017 05:07 AM
1989, 1994, 22re, 86, 88, compatibility, compatible, difference, differences, dtc, ecu, flash, harness, toyota, wiring