Motor Vehicle Maintenance & Repair Asked by emmanvazz on June 19, 2021
I am beating my head in with this issue. EFI fuse blows randomly, I have found no patter. When it blow, it will keep blowing them and not start. I have to disconnect the battery first and then replace the fuse. Then it will run a good while till it blow the fuse again. Looking for a short but I can’t find one but the battery thing makes me think it is something deeper. I am trying to track down the short right now but since it is operating normally it is fine. Guess I have to wait till it blows and get it home like that to figure it out. However the car works normal just does that randomly.
1996 Toyota Rav4
Any ideas?
There are several EFI components protected by that fuse and any one of them can cause the fuse to blow, my bet is on the fuel pump needs replaced as it draws the most current and will draw more current as it ages.
One other thing can cause it is a short to ground in the wiring, which is rare.
Answered by Moab on June 19, 2021
It was a short somewhere with the O2 sensors. It would blow randomly because it was the ECU was trying to read them and the short blew the fuse. I disconnected them and the car worked fine.
Answered by emmanvazz on June 19, 2021
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