relay board Options

[lonnie152]

problematic relay board - can not get power for fuel pump from side of board to the other. did search and note some have stripped and rebuilt them. so does anyone:
1. have an inexpensive rebuilt option;
2. know of a service or shop that does this;
3. have a fix to simply wire around problem?

thanks in advance for any help.

[swl]

CSOB hint #1. If your headlight motors are working you have a source of two known good relays. They are the same as the ones on the relay board. You can just swap them in for the fuel pump and master power relays and know if you need to buy new ones.

CSOB hint #2. Old relays sometime can be brought back to life through terminal cleaning. Perhaps this is a RCSOB hint (IMG:style_emoticons/default/smile.gif)

Probably one of the first things you should check is the fuse block. Remove power from your coil (to avoid the chance of frying your points while troubleshooting). Key on. With Volts selected on your multimeter measure from ground to each side of the fuse - it should be whatever your battery voltage is on both sides of the fuse.

[lonnie152]

thanks for suggestions.

to be precise the black wire that seems to run the pump comes in one side of relay box but exits the other end with no power. we can jump it at the relay to get it to work. but in short that is the problem. so can we just by pass the box ??

[swl]

we can jump it at the relay to get it to work.

hmm. You do understand that the pump only runs for a second when you key on. It then stops until the ecu detects that the engine is turning over. You can over ride this by removing the 4 pin plug at the back left of the relay board and jumpering pin 3 to ground. Then the pump will run continuously.

[ericread]

we can jump it at the relay to get it to work.

hmm. You do understand that the pump only runs for a second when you key on. It then stops until the ecu detects that the engine is turning over. You can over ride this by removing the 4 pin plug at the back left of the relay board and jumpering pin 3 to ground. Then the pump will run continuously.

Isn't there a negative issue with keeping the fuel pump running continuously? Or maybe not, with the return line providing pressure relief. What are your thoughts?

[lonnie152]

sorry, i have not made it clear that i have converted this car to carbs. also did the switch to correct rotary fuel pump,etc.

[bperry]

sorry, i have not made it clear that i have converted this car to carbs. also did the switch to correct rotary fuel pump,etc.

So maybe you could tell us how you wired this up and what changes you made
in wiring including any jumpers and the location and colors of
all the wires you tapped into.

If we know that, we can easily help you locate where your loss of power is
or offer a simple work around to get you up and going again.

--- bill

[lonnie152]

made no changes in wiring other than ground wire for new fuel pump. was running ignition through MSD before i made switch to carbs and am still now doing this. my problem is getting power (for fuel pump) from one end of box to the other. so looking for good fix to box or how do i wire around it.