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electrical system

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Symptoms of a Bad or Failing Fuse
If your car's accessories are shutting off on their own or you find a black fuse, you should inspect the car's fuses and replace broken ones.
How to Clean Battery Connections
Cleaning your battery connections, especially if the terminals are corroded, will help ensure the battery lasts longer and performs well.
How to Inspect Car Fuses
A fuse is a low-resistance resistor device that protects a circuit from becoming overloaded. It is a short piece of wire that is designed to melt...
Symptoms of a Bad or Failing Fuel Pump Relay
If the engine is stalling or not starting, or the fuel pump is not making any noise when the key is on, you may need to replace the fuel pump relay.
How to Replace an Automatic Shutdown Relay
The ASD (Automatic Shutdown) relay is failing when electrical functions in the vehicle are inoperative or when the car will not start.
Symptoms of a Bad or Failing Starter Relay
Common signs include the vehicle not starting, starter staying on after the engine started, intermittent issues starting, and a clicking sound.
Symptoms of a Bad or Failing Tail Light Lens
A cracked tail light lens will progressively get worse until the tail lights won't work, so make sure to routinely check them before they fail.
How Long Does a Fuse Last?
The electrical system that is on a car plays a large role in ensuring that everything is running efficiently. There are a number of different things in a car that will require a...
Symptoms of a Bad or Failing Electronic Spark Control
Common signs include engine performance issues, engine stalling, the car not starting, and the engine not sparking.
How Long Does an Electronic Spark Control Last?
The job of the electronic spark control is to control the engine timing. This part can also be called the "knock sensor", as it monitors any unusual knocking, or vibration that...
Symptoms of a Bad or Failing Electronic Ignition Pickup
If your car has an electronic distributor ignition system and the engine stalls or car does not start, you may have to replace the ignition pickup.
How Long Does an Electronic Ignition Pickup Last?
Your vehicle depends on electricity in order to run, and this electricity can be traced back to the spark plugs which create a spark to ignite the fuel. It’s a whole...
Symptoms of a Bad or Failing Electronic Control Relay
If your engine cranks but does not start or powers on but does not function, you may need to replace the electronic control relay.
How Long Does an Electronic Control Relay Last?
So much of your vehicle relies on electronic components nowadays. They all work in conjunction with one another, so that means when one fails a domino effect takes place, and they...
How Long Does an Ignition Coil Last?
The combustion process that happens when your car is cranked is vital in order to get the car moving. In order for this process to take place, a number of different components...
How to Replace an AC Control Module
AC control modules fail when the air does not distribute fully. If the temperature is inconsistent, the control unit may be at fault.
How to Replace an Electronic Control Relay
Electronic control relays are tied to many components in your car. When an electronic part doesn't work in your car you may need to replace a relay.
How Bad Driving Prematurely Wears Out Your Car
Bad drivers and bad driving habits can cause strain on car parts, especially the tires, brakes, body, and electrical and steering systems.
How to Replace an Instrument Voltage Regulator
The instrument cluster has a voltage regulator that fails when the panel is dim or flickering, reads erratically, or is totally inoperable.

Related questions

Question
Starter not working and lighting issues
Be sure the battery is fully charged. "New" batteries are not necessarily fully charged at time of sale. Of course, confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. If there is...
Question
Rear windows not working, heating issue
It sounds like you have two electrical issues, one relating to the power windows and the other involving control of the HVAC blower motor. With regard to the windows, yes a blown fuse is always a possible "fault" in a...
Question
Heating - A\c systems malfunction
The 1999 model year of the Intrepid has control system diagnostics for the manual HVAC system. Diagnostic codes that may be relevant to the problems you are describing may have been recorded and, if so, they are reported via the...
Question
My car will not start. It is completely dead (zero power), is it my alternator?
A failed alternator is a possibility, and is among the components that would be checked first, but it is not the only possibility. Charging system output should be verified against factory specifications. To have the alternator inspected and replaced, if...
Question
the electrical system on my nissan maxima pulsates why does it do this
Hello, thank you for writing in. Typically when you have issues with the entire electrical system, there is an issue with the charging system. You will want to look into having your alternator and you battery testing. Also make sure...
Question
car won't start.
A possibility is a faulty ignition switch. If the switch opens after the car starts, the engine will shut off. But, that is just a possibility and a diagnostic would have to be performed to rule that in or out....
Question
After I changed the clutch in my 2001 Chevrolet Cavalier I do not have power to everything
Hi there. If everything was working prior to the replacement of the clutch then you need to first check the ground connections on the transmission and the block. If all of the electrical connections were checked then I would suspect...
Question
Interior dim lights out and won't come back on
Hello, thank you for writing in. The fuses that you need to check are located inside the cabin near the dashboard. These are the fuses pertaining to lights you are concerned with. Keep in mind the vehicle should always be...
Question
We changed the alternator and battery and it ran for 24 hours and now it's doing the same thing and will run for 2 mins and die
Hello, and thank you for writing in. The vehicle may be having issues with the wiring, or it may be an issue with the replacement starter. Start by checking the condition of the starter cables, the battery's ground connection, and...
Question
the seats won't heat up and the fuse looks good
The heated seat circuit includes wiring, terminations, the switch and possibly a relay. There is the resistive element (heater) in the seat as well. Basically, all of those components would be evaluated in any electrical diagnostic of the fault. If...
Question
My dashboard lights,gauges,radio and power windows don't work. I can start my truck right up and drive.
Hello, thank you for writing in. Typically with the first symptoms you described I would direct you to check all of your fuses, focusing on the instrument cluster fuse. However considering the engine is showing signs of stress, you may...
Question
2002 Dodge Ram radio and dome lights don't work
The IOD fuse is a 20 amp fuse located in cavity #51 of the integrated power module (IPM). This fuse provides power to the instrument cluster, diagnostic connector, map lamps, glove box, courtesy lamps, radio and underhood light. First, check...
Question
My car died while driving and now the car won't start. There is just a click when turning the key but lights turn on.
The check engine light may hold important clues as to what is going on. During a check engine light diagnostic, a certified mechanic from YourMechanic would use a code scanner to retrieve the specific diagnostic trouble code(s) from your car's...
Question
electrical
Hello, thank you for writing in. There are several components that can cause the headlights to stay on and drain the battery. The include the headlight switch, dimmer switch, sunlight sensor, or the combination switch. With that being said, the...
Question
Driving and the lights on dash go dim and service light comes on and abs then also stopped in another time driving car would not g
Hello, thank you for writing in. It sounds like you are having multiple electrical issues pertaining to several different systems. When this is the case you will want to check into the charging system first. This means the alternator and...
Question
2004 Saturn wont crank after I installed backwards battery
Reverse polarity, at the battery, in a 12 volt electrical system on a car can cause a variety of effects including damaging the alternator, diodes and the numerous microprocessors on the vehicle such as those in the powertrain control module...
Question
The heater control panel don't work and the radio don't work everything else on the dash lights up all the fuses are good
Hello, thank you for writing in. The power supply needs to run to that area of the dashboard before it is divided up between the different components. Considering that two components are both having a loss of power at the...
Question
what happens to a car when you wire up a led bar incorrectly?
Regardless of the circuit that the LED unit is powered off of, if the unit is not on (powered) during these incidents when the car stalls, the LED unit could not be a cause simply because it is not on....
Question
Headlight blinking car want start
It's possible you have a weak battery and thus the jump start depleted your battery. Consider that a strong possibility if your battery is 4 years old or older. Prior to performing diagnostics be sure you have a fully charged...
Question
My tail lights stay on even after car is off. The hazard lights and turning signals all work but the brake lights do not.
If the tail lights are illuminated even after you have used the on-off switch to command them off, that means the switch supplying power is fused shut and/or the circuit is being powered when it is not supposed to be...

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