Fusible link blown?

89BURB

MEMBER
1989 CHEVROLET SUBURBAN
5.7L
V8
4WD
AUTOMATIC
278,000 MILES

My fuel pump fuse went out while I was on a forest road and in my misadventures to get off the mountain, I put a 20-amp fuse into the 10-amp fuel pump fuse hole. I've located a fusible link coming off of the junction block that has power going in but not going out and I'm trying to figure out what amperage it is so I can splice in an inline fuse.

3 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,643 POSTS

Most of the time an inline fuse will melt the fuse and then the holder FYI. I would go to the auto parts store and get a length to replace it with. Here is a wiring diagram to help you see how main power is distributed among the vehicle.

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Sunday, August 20th, 2023 AT 12:21 PM

89BURB

MEMBER
3 POSTS

Thanks for the reply. I got most of the electricals working. Now the car will start but it's not able to get enough fuel and will stall out if I'm not actively pressing on the gas pedal. It also keeps popping the ECM B fuse *the same fuse I tried replacing with a 20 amp*. I think there might be a short somewhere along the fuel pump wire but I'm also replacing the oil pressure sensor and cleaning/re-setting the IACV.

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Monday, August 21st, 2023 AT 9:10 AM

KEN L