I'll start off with the basics. We did a 00 b16a2 swap in a 97 cx this winter. We took the motor out of the totalled car. I converted the cx harness to work on the b16. Added all neccesary wires and extended/deleted other ones. The ecu is a 00 p2t with a katman obd2a-obd2b jumper.

The car was throwing iacv codes, so I checked over my wiring, everything is good. Now it throws a 63 for the 2ndary o2, after driving for awhile, always at nite when the lights/radio/defroster/wipers/etc on. Basically the more electrical load, the faster the code throws.

The iacv was cleaned, and that didnt work. Then it was replaced, that didnt work. Today Luke(the cars owner) dropped the car off to me, so I can replace the intake manifold and TB gasket, and check over wiring and vacuum/coolant connections. I got to drive the car for awhile.

Basically, the current issue is the idle when coming to a stop. When you push in the clutch and stop the car at a lite/stop sign, the revs will fall down to about 700, than shoot up to about 1500, surge between there and 1000 1 or 2 times, than fall into a proper idle. If you have to stop alot, I'm guessing this is when the code 14 pops up now.

We have completely eliminated all possibilty of improper iacv wiring, vacuum leaks, sticky throttle body.

If anybody has any input, it would be greatly appreciated. Every time I get the time to work on this car, I end up checking everything twice and coming up with nothing.

 

help

 

help again

 

hmm... u can try the fast idle valve. not sure if its on the b16 throttle bodys or not.. that is a common problem here...

u'll have to take the throttle body off.
on the very bottom there should be a thing attached to it that the coolant hoses run in to.. on the side. there will be 2 8mm bolts. take them off. and there is a valve in there.. tighten it up all the way. it prolly is loose. it happens alot. u should be able to figure it out.. if not. i can get u some pix later.

 

This is a stock '00 B16A2?

What does the idle sit at, with the motor hot, when you unplug the IACV? Have you messed with either of the idle screws (idle air bypass or throttle blade stop)?

The '00 B16A2 does not have a FITV; do not bother looking for it.

 

It is a bone stock b16a2 and there are no vacuum leaks. We have also set correct idle with the idle screws. Another problem that Colin didn't mention is that under partial throttle the engine hesitates, you can hear the engine getting fuel but it won't go anywhere unless you press the throttle to more than half. The hesitation doesnt happen all the time and sometimes it starts to do it worse right before I get the iacv code throws. So far to fix this problem weve replaced the iacv, tb gasket, im gasket, fuel pump, fuel filter, cap and rotor, etc. Weve been through everything and have fixed nothing, any help is appreciated. The only thing left to do that I can think of is to pick up an ex wiring harness and hope that fixes it. I don't know, were running out of options.


Modified by x-743-x at 2:56 PM 6/15/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">
The '00 B16A2 does not have a FITV; do not bother looking for it.</TD></TR></TABLE>

hey, thanks for clearing that up, i wasn't sure if the b16's had it or not.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">
What does the idle sit at, with the motor hot, when you unplug the IACV? Have you messed with either of the idle screws (idle air bypass or throttle blade stop)?
</TD></TR></TABLE>

When warm, during the day without defroster or headlites on, it idles at 700-800.

With the IACV unplugged, it idles at 500, or so.

We adjusted the idle screw with the iacv unplugged to reset the idle, since it was idling high (1100 or so).

Never touched the throttle blade stop. Throttle cable is within spec.

With the headlites/defroster/wipers/radio on, seems like every accesory you turn on, the idle will raise like 200 rpms. If its raining at night, and your are using lights/wipers/rear defroster/heater, the car is probably idling around 1300-1400. If you drive for more than 30 minutes or so under those conditions, code 14 will come up.

 

Hey Chris, you think there could be a problem with the alernator FR signal? Would this make the battery die?

How about the ELD? The ecu never threw a code 20. We will have to check all the connection s on the ELD later this week.

 

The Alt-C signal is what controls the alternator. If this line were shorted to ground, the alternator would never charge.

Honda Charging system description

 

I hate my car...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 666 y0! &raquo;</TD></TR><TR><TD CLASS="quote">I hate my car...</TD></TR></TABLE>

me too

 

bump for help

what would cause the idle to be so crappy based on electrical load?

 

I think that only Jesus Christ himself can fix my car.