Jgrov2
Member
- Joined
- Aug 6, 2020
- Member Number
- 2554
- Messages
- 22
Bit of a weird one but here's the setup. power runs to a 20A circuit breaker than through a relay into a connector into the intank fuel pump. The relay is controlled by the ecu relay via its secondary output which turns on with key set to on. The other day circuit breaker tripped twice. I measured the current draw and its only 12A at 13.4V. The wire going from the circuit breaker into the relay was hot to the touch as was the relay and the cable running to the pump but only near the relay end. I swapped in different breakers and a 30A breaker which didnt trip but still got pretty hot.
Im guessing its probably shitty contact on the terminals or wires frayed internally but everything looks and feels rock solid I even yanked on the bastards to try and loosen them and nothing. Ive switched out the relay and the new one still seems to be getting warm. Ive measured resistance all through the circuit and its pretty minimal so Im not sure whats causing the heat. Update, Ive forced and rammed everything together as a temp fix and so far so good only thing is the wire is getting hot and new relay gets warm. Im thinking of getting a new fuse and relay housing a rewiring it.
Im guessing its probably shitty contact on the terminals or wires frayed internally but everything looks and feels rock solid I even yanked on the bastards to try and loosen them and nothing. Ive switched out the relay and the new one still seems to be getting warm. Ive measured resistance all through the circuit and its pretty minimal so Im not sure whats causing the heat. Update, Ive forced and rammed everything together as a temp fix and so far so good only thing is the wire is getting hot and new relay gets warm. Im thinking of getting a new fuse and relay housing a rewiring it.