i have a fully built b20/vtec, i just converted to obd-1, and i put my p30 in, how do i tell if its a jdm ecu, or usdm? and also why isnt my CEL going off, i reset the ecu a couple of times and right when i start the car, my CEL will come on within seconds? is it knocking or something? im stumped, if anyone can help pleez let me know ASAP!!!!!!!

-david

 

did you install a knock sensor?

the P30 requires that there be a knock sensor

go to http://www.ff-squad.com and there are a few diagrams that tell you what and where to do

 

u think that would be why the check engine comes on instantly . . . . ?

 

its running a 21 and 23, i think one is vtec pressure valve , and 23 is knock sensor, so what do u think is wrong ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DirtySol &raquo;</TD></TR><TR><TD CLASS="quote">did you install a knock sensor?

the P30 requires that there be a knock sensor

go to http://www.ff-squad.com and there are a few diagrams that tell you what and where to do</TD></TR></TABLE>

 

21= vtec trigger (not pressure) 23= knock sensor

 

alright got that figured out, now my damn ecu is messing up again, the A/C wont turn on, but i had a p72 obd2 ecu in my car and my a/c was working, now it isnt, anyone have any problems with this? it has to be my ecu, becuz i plugged in the p72 and it worked, or maybe it could be my obd2to1 converter . . . . pleez help