Ive got one for $75 shipped.

 

That's a decent deal.

 

all the junk yards around here crushed all the old stuff, might have to hit up Thexjfiles.

 

Go for it. I would.

 

I just installed a "428" '90 ECU into my manual trans "87 and am very impressed in the supposed 6 horsepower increase. At 3rd gear it pulls noticeably harder. My fuel gage previously stuck past Full now works. $55 well spent.

 

Grab every one you see in the JY!!!

 

ok, found a 1990 on craigslist and its an automatic

please confirm if this is right.. (only the ...428 model will work in my 88xj auto?)

i have an 88xj automatic so i want the ecu from the 90 also automatic with model number ending in 428 ??

429 is manual transmission and that one wont work in my 88xj auto ?

the guy is asking 80$

i just dont want to spend 80$ on an ecu that doesnt work cause i didnt verify the numbers

marc

 

im a bit confused cause of this video, ecu and abs units look just the same

 

the reason i ask this,

on oreilly i get 4 results 2 manual and 2 automatic and both automatic seem to have different numbers

https://www.oreillyauto.com/shop/ign.../jeep/cherokee

marc

 

It will work fine.

 

thank you

 

Cruiser: Any reason you say to remove the 10MM nuts to pull the ECU with the mounting plate? I found it way easier to take the two small screws out of the plate and drop the ECU without removing the plate.

Also, I'm in need of an ECU for a manual trans 4.0 (dead injector driver) if someone has an '89 or '90 ECU to sell.

 

YOURS HAS LIKELY BEEN REMOVED BEFORE. sHOULD have been 3 screws that way with the third one being an absolute *****.

Buttstripe here on cF likely has an eCU for you.

 

I didn't have a third screw in either one and didn't notice a spot for it, guess I got lucky then.

Yup. We talked yesterday and probably meeting up Wed to get one.

 

Anybody have a line on these ECUs? Looking for a 429 for my manual.