ok. My 94 accord with a 94 H22 keeps blowing the ECU fuse. The V-AFC shuts down, and everything else stays on..... headlights, stereo, you name it. But I have no go. I checked everything that I could see as far as wiring but I havent really checked everything. We tried a little trial and error, so we drove it and tried tapping on the ECU as we were going to see if someting shorted out inside the ECU. Also while the car was at idle, I tried shaking all of the wires that I could reach. Nothing seems to trigger it. It will drive fine when I am driving around town, but when I get on the freeway I wont last 2 exits before it pops again. I can just drop in a new fuse and it will drive fine.

I'm pretty much at my wits end.

Anything I might want to check before I pay to have it looked at?


Modified by HRDCORD at 1:59 AM 9/14/2003

 

Something is obviously shorting out or grounding out. Check over you wiring a little closer than just shaking it

 

A friend had this problem. His o2 wire had rubbed on the subframe and skinned the insulation off. when the bare wire would touch the frame, he would blow the fuse.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTECVillain &raquo;</TD></TR><TR><TD CLASS="quote">Something is obviously shorting out or grounding out. Check over you wiring a little closer than just shaking it </TD></TR></TABLE>

Definately, I bet you something is grounding out. Check any recent wirings you may have done.

 

Check your o2 sensor wires ...sounds like its grounding out on your exhaust or something metal near it ...Have you re wired it ?

 

DAX ..... I freakin love you man!

I noticed the other day my o2 wire was hanging down right around my exhaust and I had a hunch about that, but all my friends that looked at it didnt think it was the problem. If thats what it is, I swear I'm going to kick myself in the head......

Thanks for the input everybody!

 

I deff say its grounding out. Just go back and double check all wires

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HRDCORD &raquo;</TD></TR><TR><TD CLASS="quote">ok. My 94 accord with a 94 H22 keeps blowing the ECU fuse. The V-AFC shuts down, and everything else stays on..... headlights, stereo, you name it. But I have no go. I checked everything that I could see as far as wiring but I havent really checked everything. We tried a little trial and error, so we drove it and tried tapping on the ECU as we were going to see if someting shorted out inside the ECU. Also while the car was at idle, I tried shaking all of the wires that I could reach. Nothing seems to trigger it. It will drive fine when I am driving around town, but when I get on the freeway I wont last 2 exits before it pops again. I can just drop in a new fuse and it will drive fine.

I'm pretty much at my wits end.

Anything I might want to check before I pay to have it looked at?


Modified by HRDCORD at 1:59 AM 9/14/2003</TD></TR></TABLE>


My H22 was doing the same thing. what the shop told me was that I didn't have the right injectors(i had an h23 and was still using it at the time when I put the h22 head on) but now its a full h22 and once they put the h22 injectors in it was ok. but you might want to check your ground as well.

 

Ok, so I fixed the problem. I looked under the car and noticed that the 02 censor wire was hanging down. After climbing under and looking a little closer, I saw that it had been burned through exposing the wire, due to rubbing up against the exhaust piping and melting the wire loom and the plastic coating around itself. Which caused it to arc and thus blowing the ECU fuse. If anyone ever has this problem, Honda does not sell just this part ( the wire extending the 02 censor wire and the main harness). They want to sell a whole new harness or direct you to the nearest junk yard. Re-wrapping each individual wire with electrical tape is enough.

So all of you guys that had bets going, there's your answer..... Again thanks for all of your suggestions.