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relays

Related articles

How Long Does an Automatic Shutdown Relay Last?
When you start your car, a number of things happen. The fuel pump delivers gas through the fuel lines to the fuel injectors, and the battery delivers voltage to the ignition...
How Long Does a Condenser Fan Relay Last?
The condenser fan relay allows the cooling fan to pull air through the radiator and the condenser to cool the vehicle. This part is connected to the condenser fan and is...
How Long Does an ECM-Power Relay Last?
As technology continues to advance and move forward, so does the way our vehicles operate and run. It seems more and more parts rely on computers and sensors than ever before. The...
How Long Does a Fog Light Relay Last?
All vehicles come equipped with headlights, and some vehicles offer you more in terms of lighting. Fog lights are a popular option with drivers as they are perfect for foggy conditions...
How Long Does a Main Relay (Computer/Fuel System) Last?
Common signs include the engine not starting, inability to stay running for a long time, and no communication with scan tools.
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.
How to Replace a Door Lock Relay
Electric door locks work via a door lock relay located near the brake pedal, behind the stereo, behind the passenger air bag, or under the hood.
How to Replace an Air Conditioning Compressor Relay
The air conditioning compressor relay supplies power to the compressor for AC function. This relay should be replaced if it's proven to be faulty.
How to Replace an Intermittent Wiper Relay
If the windshield wipers function on high and low but do not work on the intermittent setting, then your intermittent wiper relay may be faulty.
How to Replace a Cooling Fan Relay on Most Vehicles
Cooling fan relays fail when the radiator cooling fan no longer receives an electrical signal. A broken fan relay means the radiator cannot cool down.
How to Replace an Ignition Relay
Common signs of a damaged or broken ignition relay include a low/dead battery, the car stalling or not starting, or loss of power to the dash lights.
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 to Replace a Starter Relay
Starter relays are faulty if there are problems starting the engine, the starter stays on after cranking, or a clicking noise comes from the starter.
How to Replace a Fuel Pump Relay
The fuel pump has a relay that fails when there is no audible humming sound as the ignition is turned and when the car cranks after longer than usual.
How to Replace an Anti-Lock Brake System (ABS) Fuse or Relay on Most Cars
Anti-lock brake systems have a fuse that fails if the ABS brake light is on or when the fuse is blown. The wheels may lock up if the ABS fuse is bad.
How to Replace a Heater Blower Motor Switch or Relay
The motor switch on your heater and air conditioning goes bad when the switch gets stuck in certain positions or will not budge at all.
How to Replace a Horn Relay
A car horn uses a horn relay to power it and make sound. A faulty relay can be replaced by safely disconnecting the old one and plugging in a new one.
How to Replace a Headlight Closure Relay
Your headlights depend on the headlight relay located in your vehicle’s fuse box. Occasionally these relays need to be replaced.
How to Replace a Condenser Fan Relay
A condenser fan relay operates the fan that removes heat from the engine. If faulty, it will not allow the A/C to blow cool air or function at all.
How to Replace an Anti-Lock Control Relay
ABS brakes use an anti-lock control relay to regulate the pressure of the brake fluid in the ABS system. The control relay breaks down over time.

Related questions

Question
Rough idling and shaking very bad at low rpm's.
Hi there. Check the fuel pump relay to see if its activating. This sounds as if the fuel pump relay is having an intermittent sticking off condition. The relay may be getting too hot and shutting off causing the pump...
Question
no power to fuel pump
Hi - Check the ignition switch. You are going to have one wire from the fuel pump relay to the ignition switch. As you turn the key on, this is what powers the relay to turn on the fuel pump....
Question
What is an ECM-relay and where is it located?
Hey there. The ECM relay on this vehicle is called an auto shutdown relay and is located in the engine compartment integrated power module control box. The P0052 code you are getting is for the passenger side O2 sensor closest...
Question
The turn indicators are not blinking, they just turn on. And the hazard lights are not working at all..
The body control module (BCM) is a possible cause but not the most likely. The flasher relay is the most common fault for signals and hazards lights not functioning properly. The relay is both electrical and mechanical. Power to the...
Question
Automatic Shut down relay going bad? Car starts and then stalls at irregular times. 2001 Chrysler PT Cruiser
Hello - yes, the Auto Shutdown (ASD) Relay the likely failed component here. The behavior you describe is precisely the failure pattern for this component - car runs for a while, relay contacts (which are burned at this point) get...
Question
Everything turns on, but when I turn my key, the car won't turn on
Hi there. There are a few things that instantly come to mind that could be causing your starting issues. If you can activate all of your accessories but nothing happens when you turn the key forward, the cause is most...
Question
My 2007 Grand Caravan has hard detonation problems.
Hello. Engine detonation and power loss can be caused by a few different things. Keep in mind that engine detonation can quickly become a bigger issue if left unchecked, and in serious cases can even lead to engine damage. It...
Question
My fan blower won't work
The blower motor circuit has a relay for high speed only. The other speeds of the blower motor are controlled by voltage through a resistor block. There should be power to the resistor block, which wire depends on the switch...
Question
Starter replaced. Battery at 12V. Still clicking
Hi there. Check all of the connections from the battery to the starter and to the ground. Make sure that all of the connections are tight and free of corrosion. Then check the relay to the starter relay that is...
Question
Car will not crank
This may potentially be related to a faulty starter relay. This is a unit that directs power from the battery to the starter solenoid which then engages the starter when you turn the key. When this is not working properly,...
Question
Doesn't turn on without the Check Engine Light coming on
Hi there. It sounds like the EFI relay is sticking or has resistance internally. This relay provides power to the engine computer. If it delays that power, then there is a delay in the Check Engine Light displaying and the...
Question
Does the main relay also affect the turn signals?
Hi there. It sounds like you may have blown a fuse during your repair of the main relay. Check all your fuses and relays and replace them as necessary. Then, using an electrical wiring diagram, verify that the wiring harness...
Question
The power locks are not working on three of the doors
As unlikely as it may be, you could have three failed door motors; it has happened to me in the past. However, fuses, relays, a master switch, or the BCM could also be at fault. Check all fuses/relays and replace...
Question
Only starts if I use starting fluid
Hello. To start, lets locate your fuel pump relay. It will be in the main fuse box, in the engine compartment. It will be black box with a lid which houses most of the fuses. The inside of the lid...
Question
How do I know if I have a bad starter or a bad ignition actuator? Sometimes when I turn the key the starter doesn't work.
If the engine will not crank some of the time it can be a few different things. It can be the starter or it may be an issue in the circuit. I usually start by checking for power at the...
Question
No heat, no sound, no nothing
Hi. An electrical diagnostic by a certified professional would determine if the blower motor, resistor, relay, wiring, and switch are operational. It is not unusual for the resistor block to go bad and certainly that can be looked at first....
Question
My blower motor is not working on 2008 Hyundai Sante Fe
Hello, thanks for writing in. The blower motor resistor is what controls the different modes (i.e. high speed, low speed, etc.) of the motor. The blower motor relay is what controls the power to the motor in general. I would...
Question
What other parts do I need to have besides the throttle body and the gasket? I have already purchased both items.
Hi and thanks for contacting Your Mechanic. Before you replace any parts, get a fuel pressure tester and test the fuel rail for pressure. There should be 35 psi or more on the rail for the engine to run. If...
Question
Only the driver's door will unlock with the remote or door switch
Hi there. On your particular vehicle, there is a central control that receives the signal from the key remote and relays that information to the other locks. This could be the component that is damaged. To be certain, you might...
Question
Engine swap project, fuel pump relay wont engage from the ECU.
Hi there. Check the wiring from the fuel pump relay to the computer and see if there is a break in the wire. If there is no break in the wire, then check the power to the pin where the...

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