First, i did search, and have not figured out the problem. SO i installed an Walbro 255 LPH High Pressure Fuel Pump and now whan i turn the car on i don't get the fuel pump priming, or turning on. The car is a 92 civic DX HB with B18b. SO i followed the troubleshouting stuff in my service manual, and got semi confused. First i tested the pump by un hooking the main realy, and connecting pin 6 and 7, and the pump turns on. THe i tested the realy, thay was good, then i did a few more tests, all good. I thought the issus was the main wiring harness was hacke dfrom the owner before me, so i got a new one from another civic, that didn't do anything. Laso tried 2 different ecu, no luck. I am confused and need help. Thanks

 

bump

 

check your main relay for any dry joints.. it could be an intermittent problem?

Mohsin

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mohsin &raquo;</TD></TR><TR><TD CLASS="quote"> it could be an intermittent problem?
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Main relay problems usually are. Check it for cracked solder joints. Have you checked your fuses?

 

well, i figured it out, it was a combo of a hacked harness and a bad ground, so it works now, so happy