Folks,

I just spent over 780.00 on trying to get my check engine light to go out on my subj Civic. (I live in San Diego and I have to get it smogged). The final answer is "you have a bad computer" and to replace will cost 980.00. Well, if they ran diagnostics on it in the first place to correct a temperature Hi/Lo sensor and a transmission part (which makes the car run excellent now) how can that be. I found several on ebay and the web but sometimes the numbers do not match up.

I own a car made in Japan (I bought new in Guam), with a JHMED VIN...

it states on the computer:

37820-PM5-A550
601-139748
8 B
with a manufacture date of 87-12-24

Obviously, I am not a mechanic. Will others be compatabile? Do the numbers matter all of the way? I found a ECU that has

37820-PM5 but the rest is different.

Is this something I can just swap out myself?

I bought this car new in 1988, it has over 178,000 miles, it drove me to 5 ships and 5 shore stations and will be featured in my retirement ceremony after I get to 25 yrs in the Navy. Everyone hates it but I loove it. It is my baby blue car!

Happy Holidays!

Kevin, Senior Chief, Unitied States Navy

 

37820-PM5-XXXX
37820 means ECU
PM5 means ECU model
letters/digits after this mean ECU version, which you basically don't care much, except for the type of transmission.
If you post your tranny type (auto/manual) and the code of ECU you are targeting, I can probably tell you if it fits.

 

Should have included that. It is an automatic transmission. Thanks for the reply.

Senior Chief

 

Based on the data I have following codes should work for auto:
L57
L58
A58
A57
305
306
A51
L51
A80
L80
A59
L59
Obviously the list is not limited to those, but those are for auto I'm sure.

Those are for manual and you don’t want them:
A09
106
A06
L06
L07
L17
L21
A16
L16
A30
L30

Hope this helps.

 

if you can get by without it for a short time - think i would send it in for repair.
i know of a place in texas that repairs the ecu's.