Slammd Sol

Car is a 95 civic CX. Just finished having the head decked/rebuilt on my LS/VTEC turbo. Car started up and ran fine for about a minute, then the dash lights flickered and the car turned off. Went to restart and it now has a solid CEL (no codes can be pulled) and the fuel pump doesn't prime. Tried starting and it just cranks over. So far I have:

-Replaced the main relay
-Checked ALL fuses, twice.
-Checked all grounds (valve cover, tranny and T-stat).
-Checked the fuel pump, it works when i supply it power directly from battery.


Pretty much having the same exact problem as this guy/thread:
https://honda-tech.com/zero...age=1


Any ideas? Could the ECU have just died?


*Update see a few posts below* Still not working

Modified by Slammd Sol at 11:43 AM 7/17/2007


Modified by Slammd Sol at 11:48 AM 7/17/2007

Slammd Sol

I think the problem is that the ECU isn't getting power/sending out power

Syndacate

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slammd Sol &raquo;</TD></TR><TR><TD CLASS="quote">I think the problem is that the ECU isn't getting power/sending out power</TD></TR></TABLE>

Sounds like the ECU got roasted .

Though they usually don't go by themselves, it usually needs a power surge of some sort, but it's possible to go by itself. Try another ECU and see if it works.

You're using an LS/VTEC - There's no ECU for that, so what kinda ECU setup are you using?

Slammd Sol

Chipped P28. Car ran fine for a few months on this ECU.

Slammd Sol

t t t any ideas?

Slammd Sol

Update: After doing some research, I've found that Pin # 3 on the main relay is supposed to be getting 12 volts at ignition on.. my wire isn't getting power. It's a yellow/black wire, which i believe goes to the ecu and gives it power?

Pin # 7 (yellow /green) is also not showing 12+v for the first 2 seconds during ignition on. Pin #8 (green/yellow) is also not showing a ground signal during the first 2 seconds of ignition on.


Does the Main relay send power to the ECU or does the ECU send power to the main relay via the yellow/black wire?


Modified by Slammd Sol at 12:17 PM 7/17/2007

Slammd Sol

problem is back agian





Modified by Slammd Sol at 11:30 AM 7/22/2007

Slammd Sol

bump

92ehatch

when you jump your service connector to show codes does it stay solid?

solid means 1 of two things.

no codes or bad ecu.

since your check engine light is on, and its not pulling codes, and your main relay isnt getting power, i would say your ecu is caput.

try another ecu and get back to us

Slammd Sol

yeah, CEL stays solid with service connector on. The weird thing is, it works sometimes.. I just had the car running fine yesterday, and again out of no where the problem came back.

92ehatch

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slammd Sol &raquo;</TD></TR><TR><TD CLASS="quote">yeah, CEL stays solid with service connector on. The weird thing is, it works sometimes.. I just had the car running fine yesterday, and again out of no where the problem came back.</TD></TR></TABLE>

that sounds like a bad main relay.

have you tried tapping it when it wont start?

Slammd Sol

yeah. I also tried swapping it out with one from another car.

92ehatch

i would still try swapping ecu's and see if that fixes it

4potnick

ever fix the problem? My car is doing the same?

bigb16

I had the same problem 2 weeks ago. After a couple of minutes with the tester, I found out that the main relay was working right. So I checked the wires going from the main relay to the fuel pump. It turns out the yellow/green wire was bad. So I routed a new wire, and the pump came on normally.


BTW, this problem started when my friend used the cig lighter (which hasn't been used in years), so I had no idea what to look at first when the car didn't start up.