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Re: Alternator fuse replacement
You dont say what type of fuse it is toyota changed the fuse types a couple of times if its a spade type buy a new one and take a good look at it, because the alternator puts a lot of amps the fuse will be 25 to 30 amps.Please note before you attempt to carry out this procedure disconnect the battery,your old fuse is most likly melted so it might neet a bit of TLC to get it out ;look at the new one and see how it fits this will give you a fair idication how to proceed ,if you get it out without breaking it proceed and fit new fuse;lets pause for thought why did it happen in the first place,i think a new or good second hand alternator might be the way forward.adrian
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When the alternator went out, it may have also smoked your fusible link that the output wire is on. There are 2 or 3 fusible links on the starter relay on the passenger side fender. This is where they catch battery power from the positive cable there, or in the case of the alternator fusible link, this is where the output wire connects to battery for recharging it. The gray colored link I believe is the one on the output wire from the alternator. When a fuse link blows, the insulation on the wire may bubble or get rough spots. You cut the old one out and splice in a new fuse link. Make a soldered joint for best practice. Or just replace the whole wire and fuse link, from alternator to starter relay, from a donor car, a salvage hunt.
The procedure to replace alternator is as follows:--
1) Determine which alternator your Toyota Corolla needs. Be sure the new alternator is compatible with your Corolla's engine.2) Disconnect the negative battery cable with a socket wrench. Remove the gravel shield if you need to access the alternator from under the car. Remove the electrical connector and unfasten the retaining nut on the alternator terminal with a socket wrench. This allows you to remove the battery terminal wire. 3) Remove the drive belt. Unfasten the two mounting bolts on the alternator with a socket wrench and take the alternator off the vehicle. 4) Install the new alternator assembly. Use a torque wrench to tighten the smaller mounting bolt to 18 foot-lb. and the larger one to 40 foot-lb. 5) Connect the electrical harness and battery terminal wire to the alternator and fasten the retaining nut to the alternator terminal with a socket wrench. Thanks. keep updated for any more
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If the alternator light is on then you need to get it tested.A blown diode in the alternator can cause this with very little effect on the car until you need more amperage from the alternator,it won't be there and the car will let you down.
loosen the mounting bolts on the alternator, remove the old belt, replace with the new belt, slightly tighten the top mounting bolt, pull the alternator up until the belt is tight or if there is an adjustment bolt, crank down until tight (shouldn't bow more than 1"), and tigten other hardware.
The alternator fuse is BOLTED onto the power feed bar under/inside the fuse box; you cannot pull it out; you have to remove the top/bottom of the fuse box to gain acccess to the bolt that holds the fuse to the big metal bar that branches power to the other fuses.