Honda Car Forum

Took the 91 Civic to the shop yesterday to look at why the fans wouldn't
come on .... after a lot of testing, they determined there's no signal
from the ECU ..

My ECU's part number is "PM6A09" according to the mech. .. Says that's
what needs to go in it's place.

I searched for that number and couldn't find anything.. though searching
for PM6 ECU got me a lot..

My questions:

1) What parts of the part # need to match up for another ECU to work in
my car?

2) Would one from a 90 Civic work? Would it have to be from an automatic
(mine is auto)

3) What kind of work is involved in replacing it?

--
-Chris

http://www.ChrisGarcia.com <- My Homepage
http://www.chrisgarcia.com/cars/ <- *NEW* My cars
http://www.chrisgarcia.com/dogs/ <- *Sort-of NEW* My dogs
http://starwars.chrisgarcia.com/ <- Centerpoint Station, the "ghost-
town" of the Star Wars Universe!

The coolant fan is control my the coolant temperature switch on the back of
the engine block. It is the sensor with 2 wires going to it near the oil
filter.

You do NOT have a bad ECU!

90-91 PM6 for a automatic is what you would need though, if it is bad.

--
Charles Tague
93 Honda Civic DX HB
1.6L SOHC VTEC 14.85 @ 89 mph,1.98 60 ft.
With ZEX 85 hp ZEX 13.09 @ 103 mph, 1.81 60ft.
86 Pontiac Trans Am
225/50/15 GForce Drag Radials
305 peanut cammed 15.29 @ 88 mph
http://home.cinci.rr.com/mistab0ne/
"Chris Garcia" <NcOhSrPiAsM@chrisgarcia.com> wrote in message
news:Xns93EBBC6DF34BANcOhSrPiAsMchrisgarc@68.12.19 .6...
> Took the 91 Civic to the shop yesterday to look at why the fans wouldn't
> come on .... after a lot of testing, they determined there's no signal
> from the ECU ..
>
> My ECU's part number is "PM6A09" according to the mech. .. Says that's
> what needs to go in it's place.
>
> I searched for that number and couldn't find anything.. though searching
> for PM6 ECU got me a lot..
>
> My questions:
>
> 1) What parts of the part # need to match up for another ECU to work in
> my car?
>
> 2) Would one from a 90 Civic work? Would it have to be from an automatic
> (mine is auto)
>
> 3) What kind of work is involved in replacing it?
>
> --
> -Chris
>
> http://www.ChrisGarcia.com <- My Homepage
> http://www.chrisgarcia.com/cars/ <- *NEW* My cars
> http://www.chrisgarcia.com/dogs/ <- *Sort-of NEW* My dogs
> http://starwars.chrisgarcia.com/ <- Centerpoint Station, the "ghost-
> town" of the Star Wars Universe!

"Mista Bone" <MistaB0ne@cinci.rr.com> decided to join the conversation
on 04 Sep 2003 with message news:%mA5b.3$Kt1.2@fe3.columbus.rr.com:

> The coolant fan is control my the coolant temperature switch on the
> back of the engine block. It is the sensor with 2 wires going to it
> near the oil filter.

yes, but the condenser fan and a/c compressor don't come on either. it's
not JUST the radfan

--
-Chris

http://www.ChrisGarcia.com <- My Homepage
http://www.chrisgarcia.com/cars/ <- *NEW* My cars
http://www.chrisgarcia.com/dogs/ <- *Sort-of NEW* My dogs
http://starwars.chrisgarcia.com/ <- Centerpoint Station, the "ghost-town"
of the Star Wars Universe!