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Relay

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Question
When i shut off my car the heater blower keeps going with unit off and car off. 2006 Chevy Trailblazer
Hello - either the relay is stuck in the "On" position from burned contacts or the heater switch is similarly stuck in the "on" position (internal contacts at least). I would recommend an electrical inspection by a mobile, professional mechanic,...
Question
Car ran fine than I parked it and won't start. Changed the crankshaft sensor, ignition coils, and throttle body and the car still wont start.
Hi there. Check the fuel pressure on the fuel rail and see if there is 35 psi or more. If the pressure is at 0 to 5 psi, then the fuel pump is not functioning correctly. Check the fuel pump...
Question
How many motor mounts? 2005 Saturn Relay
Hello - for your model Saturn with the V6, there are 6 motor/transmission mounts in total. For assistance with this task, I would recommend an engine/transmission mount replacement by a mobile, professional mechanic, such as one from YourMechanic, who will...
Question
Car won't blow any hot or cold air
This may be related to a faulty blower motor or blower motor relay. The blower motor is a unit inside your vent system that blows warm air from the heater core to the vents when the heater is on or...
Question
The heater wont turn on, on any setting.
This may be related to a faulty blower motor or blower motor relay. Occasionally, the blower motor itself will wear out or become faulty working intermittently as the bruch contacts inside the motor wear out. The blower motor relay supplies...
Question
Engine cranks but wont run. Power not reaching fuel pump
This sounds like you may not have any power going to the fuel pump relay. The relay wires should have ground on two wires, power on one wire and switched power on another wire. To activate the fuel pump your...
Question
My car heater isnt working.
This may be related to a faulty blower motor or blower motor relay. The blower motor is a unit inside your vent system that blows warm air from the heater core to the vents when the heater is on or...
Question
Q: Heater not working
This may be related to a faulty blower motor or blower motor relay. The blower motor is a unit inside your vent system that blows warm air from the heater core to the vents when the heater is on or...
Question
My truck wont blow either heat or cold air?
Assuming you are referring to the blower motor resistor being replaced, this is the unit that controls the speed of the blower motor (i.e. low, medium and high speeds). The blower motor relay is a separate unit that directs power...
Question
Car won't start or crank ASD relay making rapid clicking noise when key out of ignition 1999 Dodge Intrepid
Hi there - you have pretty-well identified this problem yourself - well done! Yes, the Automatic Shutdown Relay appears to be sticking in the "power on" position, which is providing a power path to the fuel pump as well as...
Question
Q: Fuel pump relay location.
Relays are always a good location to test a system. You are on the right track in that respect. Unfortunately, your car does not have a traditional fuel pump relay. It has what is known as the Fuel pump driver...
Question
My 2001 Honda Accord keeps overheating
This can be caused by a number of things such as low coolant levels, a faulty thermostat, a clogged radiator or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant...
Question
How many Camshaft position sensor are in a Saturn relay
There is two camshaft sensors on this engine mounted in the front of the engine inline with each camshaft.
Question
Installed new delphi fuel pump and fram fuel filter. still no pressure on fuel rail valve and wont start. 2003 Chevrolet Tahoe
Hi there - I suspect you have weak power getting to the fuel pump. I would first check the voltage coming out of the fuel pump relay. If the contacts in the relay are burned, you will not get reliable...
Question
Oil light is on car full of oil runs smooth but oil light comes on
Hi there. When a motor is replaced, sometimes electrical sensors that relay information to the ECU have problems in communication and can cause multiple electrical problems as you've described. However, it's also possible this is mechanical, caused by a faulty...
Question
2007 Infiniti fx35 cranking but not starting. Do you know what the problem might be?
Hi there. The fuel pump is not energizing and causing the engine to not start. Check the fuel pump relay and listen for it to click. Also listen for the fuel pump to hum when the key is turned on....
Question
2010 Chevy Cobalt shuts off while driving
The power relay provides power to several vital fuses. The relay is turned on and off by an on board control module. A problem with this relay or any part of its control circuit, can result in a vehicle that...
Question
Overheating, white smoke from under the hood, leaking coolant, heater blowing cold air 2007 Saturn Relay
Hi there - from your symptoms, a failed water pump, or ruptured coolant hose is the likely cause of the failure you experienced. I recommend a cooling system inspection performed by a mobile, professional mechanic, such as one from YourMechanic,...
Question
Fuel pump relay location on a 96 Ford Thunderbird.
Hi there. The fuel pump relay is located on the fuse box, the second relay on the bottom near the locking tab. The location port is C1051 for the fuel pump relay. If you need further assistance with the fuel...
Question
No power to the fuel pump. 2002 Ford F150
Hello - check for a voltage drop coming out of the [fuel pump relay](https://www.yourmechanic.com/question/is-my-fuel-pump-working (in the battery junction box/fuse box underhood). That is the one link in the electrical path you don't mention checking/replacing. A failed fuel pump relay may...

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