Combustion Contraption

92 integra LS...

fuel pump isnt priming, so i narrowed it down to main relay and fuel pump. I can hear the main relay clicking, but im wondering if i hear it clicking does that for sure, 100% mean its good, or is there another test i can do? Thanks...

Combustion Contraption

Anyone?

WAFFLES

Oh man...my car was down for a month over this ****.

Here's what I found.

My fuel would not prime, but once I gave it a power supply it worked. So that lead me to believe it was my relay. It would click on, but it still wouldn't start the car. I blew up a few relays in the process of figuring out the problem. I ended up having a bad wire running from the relay to the fuel pump. I hope that helps some.

I have a few stock fuel pumps and a few relays left over. If you need anything PM me.

Combustion Contraption

ok, sounds good. im gonna give some power to the pump tonite and see if it whirs on by itself. ill also check that connector for voltage while its in the 'on' position. Thanks alot for the reply.

Glen Tennis

Man, I had this problem with my EG! It would stall at stop lights and everywhere, I had to push it out of traffic many times! So yeah, might as well get it over with and replace the mail relay and the pump, always good to just go ahead and replace them.

Combustion Contraption

any ideas on an average price for a main relay?

Glen Tennis

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LsVtec92Hatch &raquo;</TD></TR><TR><TD CLASS="quote">any ideas on an average price for a main relay?</TD></TR></TABLE>

Mine was around $35

WAFFLES

I've got a few relays laying around that I could send you.

Combustion Contraption

That would be cool but this main relay is 'clicking' though im not 100% sure if that means its good or not. Ill be testing the fuel pump in a few days (ah the joys of a project car and not having to worry about 'what happens if i cant get to work ) but thanks for the offer man. I'll definately let you know.

WAFFLES

Is your fuel pump priming? I would say most likely if your relay is clickin that it is working, so probably your fuel pump. If both are working however, I would say its wiring like the problem I had.

Combustion Contraption

no priming whatsoever. I would have checked it already however its on a DA so i gotta drop the tank. Im saving that little project for a day when i have some time....

eda6

main relay repair

WAFFLES

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by eda6 &raquo;</TD></TR><TR><TD CLASS="quote"> main relay repair </TD></TR></TABLE>

Turbogixxer

Stop guessing



fig: 3



wiring diagram for it




You need a test light and/or multi-meter

Combustion Contraption

Narrowing down a problem to one of two things is hardly guessing, but thanks.

I finally got my helms back and conducted those tests with my multimeter yesterday. The main relay is fine.

When i get a full day off, im gonna drop the tank and relpace the pump. Thanks for all the help guys.

Turbogixxer

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LsVtec92Hatch &raquo;</TD></TR><TR><TD CLASS="quote">When i get a full day off, im gonna drop the tank and relpace the pump. Thanks for all the help guys.</TD></TR></TABLE>

You check to see if you have power to the pump?

Combustion Contraption

i was under the assumption that to check and see if i have power to the pump i would have to drop the tank to check at the connector.

Turbogixxer

No, they are the same as EG/EK, under the seats you have a access plate.

Combustion Contraption

ok this is contradictory info, ive heard from multiple people you have to drop the tank on DA's. One of my buddies with a b18a turbo just a few months ago.

Turbogixxer

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LsVtec92Hatch &raquo;</TD></TR><TR><TD CLASS="quote">ok this is contradictory info, ive heard from multiple people you have to drop the tank on DA's. One of my buddies with a b18a turbo just a few months ago.</TD></TR></TABLE>

I swear I saw it on my friends DA. I mean, it is easier to check for it then drop the tank.

Combustion Contraption

http://www.g2ic.com/forums/sho...ation

http://www.g2ic.com/forums/sho...stall

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no, youre completely right, it is easier to check for it, and ill be sure to do so before i drop the tank!

Combustion Contraption

anyone have a positive answer on whether i have to drop the tank or not to replace the fuel pump on a 92 integra?

Jaker

You definitely have to drop the tank to replace it the pump. However, to check for power going to the pump, there is a 4 pin connector right where the sheetmetal under your bum when sitting in the back seat drops down to the floor under where your knees would be if you were sitting in the car. This 4 pin connector brings power and ground to the fuel pump, as well as power and signal from the fuel level sender to the instrument cluster.

Here is where you would check to see if power from the main relay was making it to the fuel pump (at least as far as this connection). There is a further 30-36" of wire that winds its way around the tank to the pump in the right rear corner of the tank.

Even if your relay clicks, there is still a possibility that the solder joints are bunk. They will go hot and cold (open and closed) depending on the ambient temps at the realy. Its soooooo easy to just resolder all the joints on the bottom of the circuit board in the relay (10 mintue job), that I would not go any further until such time as you have done this.

I just (last week) changed my fuel pump to the Walbro 255LPH (regular pressure), and now I'm faced with blowing the fuse that supplies power to the main relay on occasion. Looks like it time to upgrade the wiring and relay and run a 15 amp fuse instead of 10 amp.

Combustion Contraption

Thank you very much for the info, sir.