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fuel pump relay ground and power

Alright, I'll have to do that tomorrow. it just baffles me that pin 87 is a positive with 12v and still have continuity with the body like a ground.
- greenturdyukon
- Post #6
- Nov 15, 2022
- Forum: Engine Performance + Maintenance
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fuel pump relay ground and power

I've checked all fuses and replaced anything to fuse that connects to anything with ties to the fuel pump+relay. There must be a wire or two that somehow got connected before the relay pin 87, I can't think of why it would just spontaneously happen with no prior warning or signs.
- greenturdyukon
- Post #4
- Nov 15, 2022
- Forum: Engine Performance + Maintenance
G
fuel pump relay ground and power

1997 GMC Yukon 5.7 vortec 4X4 This started 10 minutes or so after I left a car wash, it didn't spit or sputter just died on the road. After a fair bit of diag and changing the pump i discovered that pin 87 ( should just be constant power ) is also a ground to the body. I don't know how this is...
- greenturdyukon
- Thread
- Nov 15, 2022
- fuel pump fuel pump relay fuelpump k1500 k1500 gmc wiring suburban tahoe wiring yukon yukon xl
- Replies: 7
- Forum: Engine Performance + Maintenance