2013 Kia Sorento Cooling Fan Runs With Key Off
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If the radiator rooter isn't working, a unsuccessful relay is cardinal of the possible causes. The electrical relay isn't the only possible lawsuit, nor is it the most common have. If your vehicle has two fans and unrivaled of the two fans isn't running, the trouble could be the bad fan or a defective electrical relay.
Since engine inflame can be sol destructive when the fomite is stationary, an inoperative fan should be dealt with as soon Eastern Samoa you know information technology isn't working. An intermittently inoperative fan is even more problematic, because you may not know until it's too late that the fan has failed.
Bad Cooling Lover Relay Symptoms
The relay is a critical part of the temperature reduction system. When information technology malfunctions or breaks down, IT affects the fan. Keep a lookout for the shadowing bad cooling devotee relay symptoms:
The engine runs sexy or overheats
Is the engine running play hotter than habitual at traffic signals and private road-thru lines OR parked and running? Watch your gauge! Is it overheating faster and without warning? The outcome English hawthorn bow from a malfunctioning cooling fan relay, wiring, or the fan itself. If the A/C Condenser rooter isn't working the A/C may stop cooling when the fomite is in dealings and the "pop off" valve on the compressor may release the excessive high pressure attributable elevated temperatures, making a deafening noise and some clou from under the hood.
But over again, a bad cooling fan electrical relay isn't the only culprit for too tenor engine temperatures or A/C Condenser overheating. Many other issues hindquarters reason these problems.
The cooling system fans don't work
Preferably than uncommonly high engine temps, the driver may notice that the cooling fans make stopped running. A faulty or rough electrical relay cannot deliver king to the cooling fans. In turn back, the unpowered fans won't run, going the radiator to its personal devices.
Deprived of the helpful influx of flying from the cooling fans, the radiator cannot hit Eastern Samoa much heat as IT usually does. It sends even-hot coolant back to the engine, causing temperatures to rise as the coolant fails to do its occupation of cooling down the motor.
The cooling fans keep running
Conversely, the cooling fans may keep track even when the engine is offline. This odd behavior indicates a different emergence in the relay that controls the fans. A stuck closed relay can cause this, but some vehicles may run the fans by design after the engine has been shut down. The key fruit is whether this has just started happening or if information technology's a new pattern you've noticed. Normality is the key, whether you're listening to the fans, watching your gauges, or anything else. Watch for changes.
An electric open circuit in the electrical relay coil can allow electrical relay contacts to remain in their give lieu and ne'er tight. A shorted control circuit or cragfast relay contacts can go on to deliver power, retention the fans running ceaselessly.
Apparently, if the fans execute all the time, they leave drainage the battery.
Warning lights
If the cooling fan relay has failed, you may see warnings, such As the check locomotive light and the temperature warning light, crop up on the dart, but first, you May notice that the A/C stops cooling. More about that in the next paragraph.
Unprovided for air conditioning performance
A faulty cooling devotee electrical relay can also negatively affect air conditioning (A/C) performance. The reason being, happening most vehicles, is that the cooling fan doubles as a condenser fan. When the A/C is upturned on, the sports fan moves air across the A/C capacitance, thereby removing heat from the cold, which changes from a vapor to a liquidity as it gives off heat it picked up in the evaporator. That's why they call that component the "optical condenser."
Practical Causes of a Bad Cooling Fan Electrical relay
Cooling fan relays can stop workings for any number of reasons. Common causes for relays failing to manoeuvre might be:
- Bankruptcy of the computer, temperature switch, or relay manipulate module that turns the relay on or off.
- Damage caused away changing between circuits with different speeds and electrical load
- Ants in the relays (more common than you'd expect).
- Electrical relay failure due to falsetto current draw from a partially shorted fan motor or intermittently shorted fan circuit.
How to Enjoin if Temperature reduction Rooter Relay is Bad
In that respect are several ways to tell if a bad temperature reduction fan relay is to blame for an hot engine. You can buoy try the chase methods:
Swapping Relays
The easiest method is to start the engine and then wind up the air conditioning. If the fan doesn't engage, there may live something inappropriate with the temperature reduction lover relay. Naturally it may be the lover. One unspoiled rule of thumb is that the hardest working constituent in the most hostile environment is most likely to fail. That's usually the fan itself.
If the cooling fan does not lock, you can check whether the relay is to darned by swapping IT out for a different electrical relay. This only works if the fan is impelled by a single electrical relay – Eastern Samoa stated earlier, many fan systems have a module, operating theatre they whitethorn have 2 OR 3 relays working together.
Many automotive relays are similar in design, soh you send away only make a relay from a different, noncritical system and introduce it in situ of the temperature reduction winnow relay. Dissuasive: On newer cars, this can be dangerous though, so don't swap relays that have various part numbers (usually IT'll equal on the relay) even if the terminals look the same!
If you have a single fan relay and you can receive another relay with the same theatrical role number, you'll be intimate the chilling system relay is faulty if the winnow works with the substitute electrical relay. A caveat – cooling fans can work intermittently – relay race usually either work or they don't.
Measuring the Electrical relay Spiral's Opposition
You can too quantify the electrical relay coil's resistance. A normal relay's resistance will read 'tween 40 to 80 ohms. High impedance levels warn that the coil has started to flush it while lower readings mean the relay has broken down.
Listening for Noises
Still another DIY test involves quiver the cooling winnow relay and hearing for any noises. A broken armature volition rattle roughly the relay.
Thumping Oregon Bumping the Relay
You can also thump or bump the relay to see if the fan kicks on. You can listen to the relay to see if it "clicks" when it is energized, but that doesn't mean the relay is good – it can "click" and still not deliver magnate to the fan.
What Does a Chilling Fan Relay Do?
The cooling fan relay is an electromagnetic switch that controls the business leader supply to the engine's cooling fans. It ensures that the energy-modifier devices entirely run when needed, usually when the vehicle is immobile.
When the engine temperature approaches unprotected levels, the vehicle's computer or temperature swop turns on the cooling devotee relay. The activated relay completes a electric circuit, allowing an electric current to menstruation direct it and reach the cooling fans.
To learn more than about how fan relay race (and relays, in general) work in the engine cooling system, read our in-depth explanation here.
Different Types of Chilling Fan Relays
There are several types of cooling fan relay race. Their main difference involves the winding armature that they use to exhaustive an electrical electrical circuit.
Normally open electrical relay
The most common type of electrical relay uses an acceptive armature. When the electrical relay helix gets energized, the armature closes. The completed circuit allows the current to flow to the fan motor.
Normally closed relay
The other of the unremarkably open relay, this eccentric uses a closed armature. Fresh the relay coil opens the armature and completes the electric circuit.
Dual relay
This relay type uses two circuits, one of which employs an open armature while the other one has a closed armature. Thanks to its utilise of both armatures, a dual relay canful conduct an electric current in some open and closed positions.
How Relays Work in the Cooling System
Okay, most people know that a relay is an electromagnetic change over. A standard relay has a primary circuit that magnetizes a gyre with a steel core – this turns the relay on, with the magnetism pull the incident contacts together to close a circuit. These secondary terminals that carry the lode of any the relay is switching.
Relay race are used for all kinds of jobs on a fomite, from accessories to engine control components – the radiator cooling fan is unity of the more determinative underhood components operated away a electrical relay, or sometimes by two relays. Fan relays typically dribble from 30 to 50 amps, because fans consume a lot of current.
Everybody knows most vehicle engines are swimming cooled. Circulating coolant absorbs burning ignite from the block and the cylinder head by conduction, then carries the heat away by convection to the radiator, where the fire u is released from small-scale tubes into specially designed fins positioned then that air testament pass through and carry the heat away. The radiator is technically referred to as a "wake exchanger" because that's what it does.
The fomite air conditioner has a condenser – another passion exchanger normally mounted in social movement of the radiator – that also requires flow of air – sometimes there will be deuce fans for this grounds, and those fans may pass over at a lower speed at the same time, at full speed simultaneously, Beaver State one fan may runnel while the other rooter doesn't.
Vehicles either have a module dominant fan speeds or those with 2 fans often use 2 OR 3 relays working together soh that the fans can run in series (low speed, cacophonous the voltage and running slower) in nonintersecting (both fans receiving full system potential at the same time), or again, vindicatory one of the two fans might be energized sometimes, depending on prevalent conditions.
Driving down the main road, air by nature passes through with the radiator, but when the vehicle is sitting in traffic Beaver State parked and linear, the devotee (belt driven or galvanising or one of each on some vehicles) draws transmit through the radiator to reduce the temperature of the coolant, which then returns to the barricade and the head to absorb additional warmth. This is the short version of how a cooling works.
For a more complete discussion of the cooling organization, read our article here.
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2013 Kia Sorento Cooling Fan Runs With Key Off
Source: https://www.carparts.com/blog/bad-cooling-fan-relay-symptoms/
