Found out this is what the fuse is doing so these will need to be checked.
Circuit Opening Relay ( fuel pump relay) (most come to fail or sort out)
Data Link Connector 1
ECM E4-E7
Fuel Pump
Heated O2 Sensors (both)
IAC valve
Mass Air Flow Sensor ( low voltage)
VSV (EGR) (these can get a fault)
VSV (EVAP)
VSV (Vapor Pressure)
EFI Relay (point side)
relay for pump this can sort out if it becomes damaged. EGR can fail at any time when engine is hot. also check the wiring under the dash board near to the clutch pedal the wiring is prom to fall and get caught up in the clutch mechanism and sort out the pump relay. . so would check there first.
- The fuse you are using may be under rated.
- Extra load on the circuit. After market appliance may have been connected to this circuit.
- Short circuit in wiring harness. Positive wire shorted to ground.
SOURCE: 1990 toyota pickup 3.0 v6,engine
This is an unfortunatly common problem with this vehicle, if my hypothesis is correct. Try this: disconnect the wiring connector going to the fuel tank, under the bed. Replace the fuse and crank the engine. If the fuse does not blow, then the power wire going to the fuel tank sending unit is shorted out to ground. I change about 15-20 fuel sending units a year for this exact same issue. Replace the fuel tank sending unit if the fuse does not blow. When you get it out, you will see the cause of the short, rust at the connection on top of the sending unit. Hope this helps.
SOURCE: My toyota camry (1997, LE, 4) tail light fuse keeps broken again.
go to http://www.autozone.com/...eId=0900c1528009104f . you may find a wiring diagram there for free.Please vote.
SOURCE: keeps blowing 15a efi fuse 1991 toyota pickup 2.2 re
there's a short somewhere causing that amperage to go up
SOURCE: fuse keeps blowing and gages stop to work the car will run hot intill new fuse is back in
you got a grounded wire. check the wiring in the back of the radio if its custom radio i can almost gaurentee thats what it is. however electrical aint my best area. lemme know if i helpd any.
SOURCE: I keep blowing EFI fuses on my Toyota pickup v6 4WD.
i have had this same problem.. check the exhaust pipe near the middle of the truck.. the o2 sensor was hanging down and would blow the efi fuse when the exhaust got hot.. took me months to find it..lol
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