My 1987 grand national will start and cut off in 1 second changed fuel pump and relay still the same problem
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: 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
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: 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.
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