Honda Car Forum

A frieds daughters Civic would not start today.
Gave an error code of 16 flashes. She has had this
issue a few times before. After doing all the checks,
everything looked gooed, except for the +12V across
the injectors for 2 seconds following key on.
I pulled the ECU and opened it up.
The unit had a lot of surface corrosion.
I intend to clean it this Monday, but I suspect
she will need a new (or used) CPU/ECM.
Will the ECM from a 1991 Civic work, I can pull mine
and use it to test the rest of her car.
At the moment my Civic is our only vehical and
I am a little leary of swaping least I damamge
mine.
If we need to find one in a junk yard, what years
will work? will one from a CRX of the same years work?
Has anyone had any luck with the rebuilt units sold
by Advance?
They have several, from about $450 down to $150,
the only differnce being the warrenty period.
I pulled mine just to check for corrosion and there
is not a trace. I would have thought the circuit board
would have coated with a protective spray (silicon).
Her car is a 1990, 3 door (or 2 door with hatchback),
MT, dual point fuel injection.

Terry

Is the car a 4 speed (70 hp) or 5 speed (92 hp)
I have a ECU for a 90-91 5speed 92 hp.

"Terry" <r2000swler@hotmail.com> wrote in message
news:d17275c.0408221713.199f3206@posting.google.co m...
> A frieds daughters Civic would not start today.
> Gave an error code of 16 flashes. She has had this
> issue a few times before. After doing all the checks,
> everything looked gooed, except for the +12V across
> the injectors for 2 seconds following key on.
> I pulled the ECU and opened it up.
> The unit had a lot of surface corrosion.
> I intend to clean it this Monday, but I suspect
> she will need a new (or used) CPU/ECM.
> Will the ECM from a 1991 Civic work, I can pull mine
> and use it to test the rest of her car.
> At the moment my Civic is our only vehical and
> I am a little leary of swaping least I damamge
> mine.
> If we need to find one in a junk yard, what years
> will work? will one from a CRX of the same years work?
> Has anyone had any luck with the rebuilt units sold
> by Advance?
> They have several, from about $450 down to $150,
> the only differnce being the warrenty period.
> I pulled mine just to check for corrosion and there
> is not a trace. I would have thought the circuit board
> would have coated with a protective spray (silicon).
> Her car is a 1990, 3 door (or 2 door with hatchback),
> MT, dual point fuel injection.
>
> Terry

"Terry" <r2000swler@hotmail.com> wrote
> A frieds daughters Civic would not start today.
> Gave an error code of 16 flashes.

Meaning there appears to be a problem with the fuel injectors, as you appear to
know from the rest of your post (but for others)...

I trust you've been through the troubleshooting chart for this, such as that
provided at www.autozone.com (click on the free repair guides link on the right,
put in car info, click on "emissions controls," then "troubleshooting charts").

> She has had this
> issue a few times before. After doing all the checks,
> everything looked gooed, except for the +12V across
> the injectors for 2 seconds following key on.
> I pulled the ECU and opened it up.
> The unit had a lot of surface corrosion.
> I intend to clean it this Monday, but I suspect
> she will need a new (or used) CPU/ECM.
> Will the ECM from a 1991 Civic work,

It appears yes. My reference for this is Majestic's online parts site as
follows:

www.hondaautomoviveparts.com states that the ECM from a 1991 Civic LX manual
transmission and the ECM for a 1990 Civic 3-Door DX are the same.

To check other Hondas, go to the parts site, put in the car's info, then go to
menu choice "Fuse Box-Relay-Horn."

Majestic wants $664 for a new one, plus shipping and handling.

But more below on getting second-hand ones.

> I can pull mine
> and use it to test the rest of her car.
> At the moment my Civic is our only vehical and
> I am a little leary of swaping least I damamge
> mine.
> If we need to find one in a junk yard, what years
> will work? will one from a CRX of the same years work?

I checked one model of 1990 CRX, and it too appears to have the same ECM as the
Civics above.

> Has anyone had any luck with the rebuilt units sold
> by Advance?
> They have several, from about $450 down to $150,
> the only differnce being the warrenty period.
> I pulled mine just to check for corrosion and there
> is not a trace. I would have thought the circuit board
> would have coated with a protective spray (silicon).
> Her car is a 1990, 3 door (or 2 door with hatchback),
> MT, dual point fuel injection.

I also saw at least one used ECM for a 1990 Civic at
http://www.autopartsearch.com/searchframe.cfm , going for under $150.

Updates welcome.

I'm no guru but am just trying to learn more.

Caroline
1991 Honda Civic LX, manual trans., 155k miles, ECM seems fine.

"Caroline" <caroline10027remove@earthlink.net> wrote
snip
> It appears yes. My reference for this is Majestic's online parts site as
> follows:
>
> www.hondaautomoviveparts.com

Bad link. Try instead

http://www.hondaautomotiveparts.com/...catdisplay.jsp

"Mista Bone" <mistab0ne@nospam.net> wrote in message news:<9mcWc.32970$cT6.3957@fe2.columbus.rr.com>...
> Is the car a 4 speed (70 hp) or 5 speed (92 hp)
> I have a ECU for a 90-91 5speed 92 hp.
>
Four speed.