My fuel pump doesn't start, when i turn key or use the ADLD. And before i replace it, i want to check the fuel relay, but cant figure out where its placed, does anybody got time to tell?

 

3.1 is over by the break booster on a rack on the firewall. Has a gray wire.

 

On my 91 3.1 it is as stated, behind the booster but there are 3 on the relay mounting bracket.
If standing in front of the car, the one on the far right is the A/C,
the one in the middle is the fan relay, the one on the left (sits sideways) is the fuel pump relay.

 

He has a 2.8... Any difference?

 

The Fuel Pump should start to run after about 5 seconds of cranking. There is a bypass in the Oil Switch that allows for an energized pump once you get oil pressure even if the relay doesn't work. Check the fuse first, then if you can't start the car by cranking it for a few seconds, the pump is history.

 

Well, the pump doesn't start after 5 sec. or with direct 12volt to the pump, So guess i better buy a larger pump for my project, are there any ways to make an easy replacement? without having to disassemple the whole rear of the car?

 

some say to cut a hole in the bottom of the car. I disagree, I prefure to have full body strength.


Get an acdelco pump for an 89 vette. bolts right in, flow more, suppose to have metal gears rather then plastic.

 

I was thinking of buying a Aeromotive A1000 or pehaps 1x Bosch 044 pump. Thou they won't fit in the tank.
Guess a fuel pump reneweal is a great time to upgrade suspension to an adjustable

 

I've dropped the tank to change a fuel pump twice already; aside from a bent track bar brace that really puts up a fight, it's not "rocket science", just a few hours of hard work- and in my opinion, a lot less risky then cutting sheet metal that sits right above the tank!!

But plan to change the fuel hoses up there; by now they're probably in bad shape. You can use regular fuel hose for the vent & return lines, but you'll need to special order (or have specially made) the high-pressure fuel feed line. Some "real" auto shops make high pressure lines (such as for air conditioning systems) with the hydraulic-pressed-on fittings.