The most likely reasons are that the alternator has been upgraded to a larger unit or that the alternator voltage is too high. A high alternator voltage can cause the generator to generate too many amps and overheat the alternator, causing the alternator to fail prematurely (burnout), which also happens very quickly.
The smell of hot wire can be caused by an overheated generator, a generator that is pushing too much current through the rotor and stator. Yes, there is another option thanks to the rubber strap that keeps the alternator running, as well as the rubber sleeves on the wires that connect everything in the electrical system.
6 symptoms of a bad generator
- Indicator light.
- Headlights are dim or flashing.
- Other electrical faults.
- Strange noises.
- The car stops or has starting problems.
- The battery dies.
On many other cars, the generator output lead goes directly to the battery (or the POSITIVE battery lead near the starter solenoid). The power cables for the operation of the dashboard and the electrical system are also connected to the battery.
Burnt rubber smell The smell of burnt rubber or burnt wires is sometimes an indication of a generator failure. Friction between a misaligned belt and pulley creates a burnt rubber smell. The smell of hot wire could be due to an overheated generator.
The battery measures 12.2 volts when the engine is off and the alternator produces approximately 13.2 volts when the engine is running. The alternator can quickly become uncomfortable in just a minute or two while the rest of the engine is still cold. After 5 minutes it is intact.
In the 1960s, the typical cooling temperature at the generator inlet was 90 ° C. By the 1980s this value had risen to 110 ° C. Today applications are approaching the 130oC series. But the requirements for thermal design don’t end there.
I can now give you some general connections (for example: the terminal marked with B + is the output, the terminal marked with D + goes to the charge lamp, the one marked with W is the speedometer socket), but this assumes that your L ’ alternator uses conventional markings.
Check the battery first.
Repairs are another cause of generator fires. When replacing a generator, the outlet should be checked. If the plug is not in good condition, it should be replaced. A damaged contact can melt the wire and cause a fire.
Terminals R and F are the reference or voltage measurement terminal and terminal block.
The three types of cables in a three-wire generator are the positive battery cable, the voltage sensor, and the ignition cable. The positive battery lead is connected to the starter motor. The voltage sensor cable is connected to the battery and the ignition cable from the alternator to the key switch.
The cable is connected to the L terminal of the generator. The power cord is used to turn on the voltage regulator. This cable, once disconnected, should be approximately 12.5 volts with the key inserted.
An alternator is a vehicle component that transfers energy from the power system to the battery for vehicle accessories such as radios, headlights, and air conditioning fans. A wire called an exciter creates the voltage needed to run a generator every time a vehicle is started.
Turn the ignition key to ON, but do not start the car. The warning lights on the instrument panel come on and the voltage regulator has been activated. Repeat the test with a screwdriver. Place the metal end of the screwdriver next to the nut on the generator washer.
Look for a regulator under the washer bottle and / or the bracket on the driver’s side of the radiator bracket. With the pens aligned like this, there is an internally controlled generator. A 10SI has a metal fan or a 12SI has a plastic fan.
The 1-wire generator only has an idea of where the electricity is sending, which is the battery. The three-wire generator measures the voltage at the fuse block and at ignition, so the alternator charges more to supply power to all systems, summarizes Overholser.
There are some car models that have alternators that depend on a specific fuse. However, these fuses can ■■■■ due to voltage fluctuations or simply age. In this case, the alternator will no longer charge the battery.