Weird ECU code... Help - Honda Forum / Acura Forum

OldSchoolSwap · 12-18-2002, 01:53 AM

I just finished a swap and the motor turns on but with a bad idle and super rich! So rich that the hole back yard gets smoked out and i think i killed a few squirles!
Either way, i checked the ecu (PR3) and as soon as i turn the ignition to the "on" position, the ecu's LED turns on steady, turn on the car and the LED stays on steady, at no point in time will it blink at all.

The check engine light on the dash also stays on steady.

What do you guys think this could be?
Here are the following things i checked so far and seemed to be fine:

-Ignition
-Fuel
-Injectors have been replaced, multiple times
-Injector resistor box was replaced
-ECU was also replaced (made no diffrence)
-Checked all ground wires
-Checked all sensors and connectors
-Every cyl is firing
-Don't see any wire grounding out

What would you pro's recommend?

It also idles rough and won't rev past 3 k.

-----
Update:
Well, looks like my injectors took a ****!
Yep! did i mention my injectors are taking a crap?

I'v replaced a full set allready and they go dead one by one untill non of them work and the engine won't start anymore unless i replace them again.

Side note: This is a 1st gen B16 non OBD set up.

CrZyAzN · 12-23-2002, 02:51 AM

Where did u get it swaped at? go back there and let them cheak it all out.

OldSchoolSwap · 12-23-2002, 03:02 AM

Quote:

Originally posted by CrZyAzN
Where did u get it swaped at? go back there and let them cheak it all out.

I did it all myself.

05 tC · 12-23-2002, 05:24 PM

Looks like you have done a good job of troubleshooting, but I was wondering if you checked your fuel pressure? If so, what was it? If the fuel pres. regulator was damaged, the resulting excessive fuel pres. would cause the engine to run rich and damage the injectors.

Just a guess, I hope everything works out for ya.

Toddnos · 12-26-2002, 06:27 PM

Yep...IMO its the fuel pressure regulator. Honda injectors dont just take a crap. They dont usually fail at all. This is what i was told by RC fuel injection in Gardena Ca.

temp · 12-26-2002, 06:32 PM

bad ECU.....

OldSchoolSwap · 12-26-2002, 08:21 PM

Well, i am proud to announce that 90% of the issues are now solved. The ruff idle & super rich mixture is now FIXED!
Turns out that the 1st gen B16 motor does NOT have the map sensor located at the throttle body like 2nd gens. My Map sensor is located on the right side fender inside a black box, formaly known as the "mystery box" with a bunch of vacume hoses. One of those hoses will plug up to one of the throttle body's niple to create the correct amount of vacuum for the map.

The motor idles like a baby now! =)

The ecu "no blink" and 3000 rpm limit still remains the same. =(
Its intermittent now! It turns off and i'm able to rev it to what ever RPM then the check engine will turn on and can't rev past 3000rpm and vise versa. OVER and OVER again.
Driving it is not to plesant either, it kinda pulls, then chokes consecutively.
This tells me that BOTH of my PR3 ecu's are not bad.

This is the MAP sensor box.

temp · 12-26-2002, 08:24 PM

hmmm check the dizzy

OldSchoolSwap · 12-26-2002, 08:26 PM

Quote:

Originally posted by temp
hmmm check the dizzy

Distributor?
Its almost new. can't be

temp · 12-26-2002, 08:28 PM

ok let me ask you this.....is the ECU LED indicator light blinking now? if it is what code is it blinking?

OldSchoolSwap · 12-26-2002, 08:31 PM

Quote:

Originally posted by temp
ok let me ask you this.....is the ECU LED indicator light blinking now? if it is what code is it blinking?

Nope! doesn't blink.
It turns on and off when ever the engine light turns on.
In the period of 5 minutes, the check engine light will flicker on and off every so often intermittent. So will the ecu's LED.

If the check engine light stays on. The LED will stay on as well without blinking.

temp · 12-26-2002, 08:33 PM

wow....you swapped that into an 87 model something.....how was the wiring?

OldSchoolSwap · 12-26-2002, 08:36 PM

Quote:

Originally posted by temp
wow....you swapped that into an 87 model something.....how was the wiring?

Into an 88 Accord Lxi Fuel injected model.
This is the second time i do it. Only this time i did everything myself.

The wiring is from Place Racing (mounts too) but i still had to route and plug a few pins to the ecu.

You know what, i will check the ecu plug pins for ground. Maybe the car's harness is not grounded properly. humm...!

OldSchoolSwap · 12-26-2002, 10:53 PM

Ha!
I just finished checking grounds!!!
Pin A6 on the plug does not have ground.
A2, A4 are fine, both have grounds. What should i do about A6? Just find any ground on the chassis?

kinghawk · 12-26-2002, 10:56 PM

run a6 to body ground or to one of the ground wires coming out of the ecu