I have a 1992 305 Camaro RS and i recently discovered that the wire for the fusible link had burned out. so i replaced it and it worked for about and hour, then the car stalled out. i looked and the whole wire that i just replaced for the fusible link had lost the plastic insulator and wont start again. my electric fan motor also seized up. could it be shorting it out and causing the wire to burn? please help

 

Yes.. If your fan motor is seized, then that is most likely what is causing things to overheat.. I'm going to guess that it was the seized fan that blew the original link too..

When a DC electric motor is spinning, it generates its own internal voltage that 'pushes back' against the 12 volts that is being fed to it. This back voltage (called back EMF), limits the current flowing through the motor and prevents the motor from spinning faster and faster until it flies apart.

If the motor is bound up and not allowed to turn, then the 'back voltage' doesn't get created. This will cause excessive current will flow through the motor windings. It can burn insulation and cause shorts. This can also blow the fusible link.

You can temporarily 'unshort' the system by by unplugging the connector from the bottom of the fan relay (you may find the plug is burned too).. If your fan is seized and doesn't turn, you'll have to replace it before you replace anything else....

 

i figured it was that but i found out that on top of that when i had the wire replaced the person didnt use a fusible link wire or a fusible link, causing it to short out again. this also fried my ignition switch which was going bad, and my coil. my friend who came over who is a mechanic said he never heard of it frying the coil but he said it was possible. i unpluged the coil and re wired it under the steering column and it didnt short out with the coil wire unpluged so that is what fried the second time i had the normal 12v primary wire put on. Thanks for the reply and help GTA

 

Hey this is kind of off topic but i think my problem might stem off of the same thing, My car over heated one day and since then i only have power to half of my car, like the electric hatch motor doesnt work, the car cranks but wont start, so im assuming that theres no power to the fuel pump or computer im not that technical but its easier to get things fixed when you can narrow down the possible problems, also lights work as well, but where is this wire?

oh and this is a 305 tbi motor in a 1988 camaro...thanks

 

General electrical statement: Fuses/fusible links do not usually blow because they are bad. They blow because the circuit is drawing more current than the fuse rating. Use an ohmmeter to find the short to ground.