hey guys.... my car is a 94 civic hatch dx... with a d16z6 swap in it. What I currently had in there was a p28 with a vafc1 hooked up to it. My car was broken into and they unplugged my ecu and ripped the vafc1 off the harness. I rewired everything back and had my brother send me an ecu that he bought off a guy from florida and im located in oklahoma. When i plugged the ecu in and i started my car up.... i smelled burning from my car.. after searching for it... it was coming from the ecu that i just plugged in. I opened up the ecu and there's a burnt mark on it.... we'll i guess the pix will best explain itself... but can anyone that have knowledge in ECU please tell me what is burnt, can it be fixed, or is it still usable.
Also i checked for trouble codes and its throwing out a 40.... I have no idea what a 40 is???? If anyone knows what a 40 is let me know.... but as of right now the car can still run with that ecu

thanks


Top View of ECU notice the burnt mark towards the front of the ecu


Closer shot to the burnt mark


something that cracked (anyone know what that is)


rear view of how it is burnt


closer rear view of how it is burnt


i dont think this pix matters but its just the rear cover


Modified by blu3g at 11:13 AM 7/18/2006


Modified by blu3g at 11:42 AM 7/18/2006

 

Seems to be as if you swapped the IAT and IACV plugs, it will be fine for the most part, but your readings will be a little off.

 

hey guys your input would greatly be appreciated

 

let me guess u didnt bolt it in = not grounded?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by commotion &raquo;</TD></TR><TR><TD CLASS="quote">let me guess u didnt bolt it in = not grounded?</TD></TR></TABLE>

The case is isolated so it doesn't matter.

There is either a short in the wiring for the EVAP purge solenoid, or the IAT sensor plug and the EVAP purge solenoid plugs are swapped.

 

I thought it was my vtec selonoid and the vtec oil pressure switch.... will that mess it up? well guys if its like this... will it still be safe to use the ecu?

 

ttt plz you guys that are ecu experts plz help me out?

 

**edit**

you swapped the IAT and charcoal canister purge valve plugs
this blows up Q31 (as you did)

your IAT may be blown.
the ECU should be fine but the purge valve control will be gone. No CEL, the purgr valve is an emissions device. It runs fuel tank vapors into the intake manifold when you're cruising.


More than likely you messsed something up when you rewired things or it was always popped like this and you did something else to let out some smoke...

CEL 40 or CEL 4????


Modified by Relic1 at 6:28 PM 7/19/2006

 

thanks for an expert opinion on it....