Hey everyone! I have a 93 Honda hatchback with a b20b swap. I've had an issue recently where fuse 24 would blow while driving. I would put a new fuse in and I'd be good. Recently I went over a hard bump and now every time I put a fuse in it blows instantly. I've checked the ECU, the wires, the pgmfi relay everything looks good. It doesn't blow when the pgmfi relay is unplugged. I don't believe it's the fuel pump as its a newer walboro 455 fuel pump and it has worked before after the fuse blew. Could it be a ground in the fuel tank I'm missing? Any help would be great. I'm out of a car right now

 

A bad ground would not cause the fuse to blow. The fuel pump is the prime suspect.

I assume the fuse blows only when the key is turned to ON(II). If so:

1. Unplug the fuel pump.
2. Install a new fuse 24.
3. Turn key to ON(II).
4. Does fuse 24 still blow?

 

I was really hoping against that as I can't afford a fuel pump right now. Especially not another walboro fuel pump like the one in it. Could I maybe have jarred a wire loose inside the tank or is it just bad?

 

See test I posted.

 

Noted. I'll try that as soon as I get home around 6

 

But if the fuel pump is the issue is it possible there are wires in the tank connecting to the fuel pump have been knocked loose by the bump I went over?

 

The pump wires are external to the tank.

The pump test is pretty easy.

 

I know I just don't have a battery or volt meter to test it. I'm about to unplug the fuel pump and see if the fuse blows

 

Battery and meter not needed for this test.

 

Gotcha I thought you meant to test the actual fuel pump
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If fuse does not blow with pump unplugged, then the pump motor is the problem and has a short to ground.

 

The fuse didn't blow. Is there any way to repair the fuel pump? I can't afford a new one right now

 

Most likely irreparable. Pull one out of junkyard Honda. Stock Honda pump is best.

 

Update there were wires to the fuel pump inside the tank. There was an exposed wire. I fixed the issue

 

Did you pinch the wire with the pump cover?

 

No. It was out of reach of the pump cover. It just looks like when the pump was installed they did a bad job with the crimping because the wire was frayed on one side of the crimp, exposing it to the metal gas tank. I re crimped the wire and insulated it. Fixed the issue completely

 

I've never installed an aftermarket fuel pump. Why was wire crimping required?

 

I'm not sure. I shoulda taken a picture. It was just 2 halves of the ground wire were crimped together. Maybe the extended the ground wire due to the larger fuel pump and where the ground was.

 

Glad to hear you found a $0 fix.