Where is fuel pump relay on a 1987 buick grand national

SOURCE: can't find the fuel filter on my 1987 buick regal

its toward the back on the driver side by the rear end on the under carriage

SOURCE: I have a 1987 buick

Class car man.Try the crank position sensor it controlls the ignition and fuel delivery by sending information to the ecu in relation to the position of the crank-cam.

SOURCE: 1987 Buick Grand National losing power, changed

Symptoms Like this usually point to the Fuel pump.

Also these cars suffer from inferior wiring to the fuel pumps and a substantial Voltage drop is noted between the Fuel pump relay and the Pump harness.

The fix for this is a "Hotwire" Kit

Fuel pump kits with a Hotwire kit are available at numerous Buick performance Vendors but the best stuff in my opinion come from Racetronix,com

You should also change the Prom Chip in the ECM to a modern
Chip from Turbotweak.
This will improve driveability greatly.

HTH

SOURCE: I have a 1987 Buick Grand National. The drivers

you don`t say where they keep breaking.if its around the bolts then you can use a thicker washer this might help.if the tracking system that the seat slides on then if there is room you might be able to weld a re-enforcing plate to the system where it cracks to stop it.

SOURCE: put new fuel pump in 87 buick grand national now

i have a 1987 buick grandnational and put a new fuel pump in and the car will run about 5 min then just shut off