matthevelli

well it seems like nobody can help me here...ive posted many times and ive got nothing so far..ive been dealing with the same problem for a month now and all ive gotten so far was "maybe you should do another swap"...

PROBLEM: <U>95 cx hatch with b16a</U>....car will only starts with STOCK P05 ecu..i have 3 new main relays..and two P30 ecus..now once in a while the car will start with the P30..but will always start with the P05..my relay used to click loud and fast!!! same with the fuel pump..so for ***** and giggles i plugged my stock ecu in and it started fine..so huh, i bought another P30 ecu thinking my current P30 was shot..and when i received it I gave it a try...and i still have the same problem..before i bought the P30 i had someone else look at it and he said it was even the computer..he said the my current P30ecu(came with the swap package) was making the same noise..clicking loud and fast..

so okay now im stuck with 3 main relays that are all in great condition and two p30 ecus that are either shot..or in great working condition i just have a wiring problem that only the P30s are effected by..like i said the car will only run with the stock ecu, even tho the car starts with the stock ecu i still noticed the relay clicking alot more then it used too..but it still starts..

so anyone out there..who knows why my car is doing this..or if anyone can tell me if theres a difference between the P05 ecu and the P30 ecu besides, knock senor..vtec and o2..and maybe that can link me to a wiring problem..

matthevelli

mmmm..

Josh C.

Clicking like the sound of when your battery's too low in juice? if so, maybe the p30 wants more juice than what the p05 wants? I don't know, that's my uneducated guess...

matthevelli

battery has plenty of power..its starts with the p05..starts normal..

erasable180

ok, you switched the o2 from a 5 wire to a 4 wire or however it goes right? you got a obd1 to obd2 converter harness? i'm just shooting out random suggestions. vtecd dont have nothing to do with start up so thats not a problem. what distributor are you using?

matthevelli

finally someone willing to help...its a 95cx so its obd1 with an obd1 engine..(b16a)
i had to swap out the cabin harness..(93 ex)...but i had no trouble starting the car after..but all a sudden its giving me trouble..like i said runs on stock ecu P05 wont start with the two P30s..i have battery power..fuses good..and grounds good..im thinking maybe its two bad P30s..

IVI

have someone else try the p30 in their car and see if does the same thing.

it could very well be that you have 2 bad ecu's.

any ecu should start the car. even a p2e should start the car correctly if you had the conversion harness.

matthevelli

yeah..i would have someone else try the ecu..but i have nobody else..i got a buddy with a 99si..and a buddy with a 90crx..i dont know any obd1!!!

IVI

get a conversion harness and have the 99si test it for you.

or send it to me and ill test it.

SVOboy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by erasable180 &raquo;</TD></TR><TR><TD CLASS="quote">ok, you switched the o2 from a 5 wire to a 4 wire or however it goes right? you got a obd1 to obd2 converter harness? i'm just shooting out random suggestions. vtecd dont have nothing to do with start up so thats not a problem. what distributor are you using? </TD></TR></TABLE>

Having a cx he would have a 1 wire stock, the vx is 5 wire. Test out the ecus and see. Even a dead ecu should start it up in limp mode though.

IVI

a dead ecu wont neccesarily turn the car on.. it depends.

SVOboy

True, but I'd think it'd have to be noticably dead to not run off the limp stuff, I guess if it was water logged or something, *shrug*

matthevelli

does anyone know the difference between the P05 and the P30(besides the fact it runs vtec..knock sen..and the o2 sensor is diff..)i just need to know if maybe the theres something else that can link me to a wiring problem.i get some time sunday to look at it..so im going check some more things over..but if anyone has any information..anything will help..thanks


Modified by matthevelli at 10:27 AM 3/19/2006