topher469

I am putting my brother car together and it was a 4cyl. I have a harness from an 89 and the car is a 89. Any clue why I would get power to the pump? I have checked the pink/blue wire and it has no power and that is the one from the computer. Does the computer power the pump? or what else should I check before spending the money for new box? PLEASE HELP IF ANY IDEAS

shinysideup

is the fuel cutoff relay wired in and reset? you know the one for an accident.

evocrazy1

try the inertia switch over the left rear tail light, or you could have a bad fuel pump relay itself.

$hawn

does your chassis harness have a pump relay in it? under the drivers seat ? or is the F/P relay under the hood?

herrcomestrouble

If you have power coming from the ignition, then check under the drivers seat. There is a lil black relay there. Take a small wire, strip both ends. Jump out that relay and see if you have power then.... Those relays shit the bed without any notice at all. 1 minute the car will crank and run fine. The next it wont start at all...

-Cody

topher469

Ok there is only one wire with power under the seat. VERY WEAK VOLTAGE! I assume that it is for the sending unit. The relay will click when tested but I put different relay in and still nothing. Yes the inertia switch is fine and wired. I even took the one out of my coupe and put in his and still nothing. I dont need the inertia switch in mine but it is different then his. My car is a 90 and his is 89. Is there a difference in the chassis harness from 4 cyl to 8?

topher469

I am not getting any codes to flash from computer. Could this cause my problem too? Bad computer? PLEASE HELP IF YOU CAN

trey

just hot wire the f/p to a toggle switch

topher469

I would but that kinda cheesy, and with the money that is in this car I think I would rather it be right. I did hot wire to make sure it wasn't a junk "new" pump LOL. Had that happen once too, new bbk pump and it was junk.