You’re on your way to an important meeting, coffee in hand, when your car stubbornly refuses to start. Panic starts to set in, and the dreaded thought of a costly repair bill flashes before your eyes. But what if the culprit wasn’t a major engine problem, but something as simple (and affordable) as a faulty engine relay? It happens more often than you might think! Before you call a mechanic, consider checking the relay – it could save you a lot of time and money.
That’s why we’ve put together this comprehensive guide to the best car engine relays under $20. We’ll delve into reviews of top-rated options, discuss crucial factors to consider when making your purchase, and equip you with the knowledge to confidently troubleshoot and potentially solve your car’s starting issue yourself. Let’s get you back on the road without breaking the bank!
Before we start our review of the best car engine relays under $20, here are some related products you can find on Amazon:
The Unsung Heroes: Why You Should Care About Car Engine Relays (and How to Find the Best Ones Under $20!)
Ever been stranded on the side of the road, scratching your head and wondering what went wrong? While it could be a number of things, sometimes the culprit is something surprisingly small and inexpensive: a relay! These little electrical switches are the unsung heroes of your car, quietly orchestrating the flow of power to vital systems like your engine, headlights, and fuel pump. When a relay fails, it can cause a whole host of problems, from a car that won’t start to lights that refuse to turn on.
Think of your car’s engine relays as tiny gatekeepers, allowing a small electrical signal to control a much larger flow of power. They protect sensitive circuits from overload and ensure that high-power components get the juice they need when they need it. According to a recent study by the National Institute for Automotive Service Excellence (ASE), relay failure accounts for approximately 5% of all electrical system malfunctions. That might not sound like much, but considering how many cars are on the road, that’s a significant number!
Now, you might be thinking, “Relays? Sounds complicated and expensive!” But the good news is that replacing a faulty relay is often a simple and affordable DIY fix. And that’s where we come in. We’re diving into the world of affordable automotive components to help you find the best car engine relays under $20, saving you time, money, and a potential headache.
This guide will walk you through everything you need to know about car engine relays, from understanding their function to choosing the right replacement. We’ll be looking at various types, compatibility, and the key features that separate a reliable relay from a potential dud. So, buckle up, and let’s get started on finding the perfect, budget-friendly relay to keep your car running smoothly and reliably.
Top 5 Best Car Engine Relays Under $20
Bosch 0332019150 Relay
Looking for a reliable and budget-friendly relay? The Bosch 0332019150 is a solid contender. This little guy is known for its dependable performance in a variety of automotive applications. It’s a single-pole, single-throw (SPST) relay, meaning it’s a simple on/off switch controlled electrically. Installation is typically a breeze, and many users have reported it lasting for years without any issues.
While it might not have any fancy features, its simplicity is its strength. It’s a workhorse that gets the job done, whether you’re using it for headlights, horns, or other electrical components. The Bosch name carries weight, and this relay lives up to the reputation for quality and value. Just be sure to double-check the pin configuration to ensure it’s compatible with your vehicle.
HELLA 4RA 933 332-551 Mini Relay
The HELLA 4RA 933 332-551 mini relay is a great option when space is a concern. This compact relay packs a punch, delivering reliable performance in a small package. It’s a versatile relay that can be used in a wide range of automotive applications, making it a handy spare to keep in your glove compartment.
HELLA is a reputable brand in automotive lighting and electronics, and this relay reflects their commitment to quality. It’s designed to handle moderate current loads and provides consistent switching. It’s a solid choice for anyone needing a dependable and space-saving relay solution.
Nilight 50040R Automotive Relay
Need a relay that can handle a bit more juice? The Nilight 50040R automotive relay might be the answer. This relay is designed for heavier-duty applications, boasting a higher current rating than some of its competitors in this price range. It’s often used for accessories like fog lights, electric fans, and other power-hungry components.
The Nilight 50040R offers great value for its price. While the brand might not have the same name recognition as Bosch or HELLA, it has gained a following for its reliable performance and affordable price point. If you’re looking for a relay that can handle higher loads without breaking the bank, this is definitely worth considering.
ONLINE LED STORE 5-Pin Relay
The ONLINE LED STORE 5-Pin Relay provides flexibility with its single-pole, double-throw (SPDT) configuration. This means it can switch between two different circuits, offering more control over your electrical system. This type of relay is commonly used for functions like controlling accessories that require both on and off states, or for switching between different power sources.
This relay provides a robust and cost-effective way to manage more complex wiring setups. It’s a versatile option for adding custom features to your vehicle. For those who need the extra switching capability, the ONLINE LED STORE 5-Pin Relay is a great value.
EverStart Relay
The EverStart Relay is a dependable and widely available option, often found at your local auto parts store. This relay is designed to be a direct replacement for many common automotive relays, making it a convenient choice when you need a quick fix. Its straightforward design and ease of installation make it popular among both DIYers and professional mechanics.
While it might not have all the bells and whistles, it offers reliable performance for everyday applications. It’s a no-frills option that gets the job done. The EverStart Relay is a solid choice for anyone looking for a readily available and dependable replacement relay.
Why Buy Car Engine Relays Under $20?
Think of your car like a complex orchestra, and the engine relay as one of its tiny but vital conductors. It’s the little component that ensures your engine gets the power it needs to start and run smoothly. Over time, these relays can wear out or fail, leaving you stranded or experiencing frustrating engine problems like intermittent stalling or difficulty starting. Replacing a faulty relay is often a straightforward and inexpensive fix, especially when you can find reliable options for under $20. It’s like giving your car a quick and affordable tune-up that can prevent bigger headaches down the road.
Imagine this: you’re running late for an important meeting or picking up your kids from school, and your car just won’t start. The dreaded click-click-click. While it could be a dead battery, it could also be a faulty engine relay. Instead of facing a hefty mechanic bill and waiting for days for a replacement, you can quickly swap out the old relay with a new one you’ve proactively purchased and kept in your glove compartment. It’s peace of mind in a small package, and it can save you time, money, and a lot of stress.
Investing in a few high-quality, affordable engine relays is like having an emergency kit for your car’s electrical system. These relays are designed to meet or exceed OEM specifications, ensuring reliable performance and compatibility with your vehicle. By choosing relays under $20, you’re not sacrificing quality. You’re simply being a smart and proactive car owner. Plus, replacing a relay is often a DIY-friendly task, meaning you can save on labor costs and gain a sense of accomplishment.
Ultimately, buying car engine relays under $20 is about preventative maintenance and preparedness. It’s a small investment that can make a big difference in the reliability and longevity of your vehicle. By having a few spares on hand, you can avoid costly repairs, inconvenient breakdowns, and the stress of being stranded. So, take the time to research the best car engine relays under $20 for your vehicle and enjoy the confidence that comes with knowing you’re prepared for the unexpected.
Relay Types and Their Common Applications
Think of relays as tiny electrical gatekeepers in your car’s electrical system. They’re switches that control circuits using a low-current signal to activate a higher-current circuit. Understanding the different types can really help you diagnose issues and select the right replacement. We commonly see SPDT (Single Pole Double Throw) and SPST (Single Pole Single Throw) relays, but also specialized ones for starting or fuel pump control.
SPDT relays, for instance, have a common terminal that can switch between two different circuits. This is useful for things like controlling a device that needs to be either on one setting or another. Imagine using it to switch between high and low beam headlights. SPST relays, on the other hand, simply open or close a single circuit, like turning on a fog light.
The specific application dictates the relay type needed. For example, your starter motor requires a heavy-duty relay designed to handle the significant amperage needed to crank the engine. A smaller relay simply wouldn’t cut it and could even melt down. Always check your car’s manual or the relay itself for the correct replacement.
Don’t underestimate the impact of using the wrong relay. It’s not just about functionality; it’s about safety. Using a relay not rated for the intended current can lead to overheating, electrical fires, and damage to other components. So, take a moment to identify the correct type and amp rating before replacing any relay.
Troubleshooting Common Relay Problems
Ever had your car refuse to start or experience intermittent electrical issues? A faulty relay might be the culprit. Common problems include a relay that’s stuck open (won’t turn on the circuit), stuck closed (won’t turn off the circuit), or has corroded terminals. These issues can manifest in various ways, from a non-functioning horn to a fuel pump that won’t prime.
A simple test you can perform is the “swap test.” If you suspect a relay is bad, try swapping it with a relay of the same type from a less critical system, like the rear window defogger. If the problem moves to the defogger, you know the original relay is likely faulty. This is a quick and easy way to narrow down the problem.
Another helpful tool is a multimeter. You can use it to check for voltage at the relay coil and to test the continuity of the relay contacts. If you’re not getting voltage to the coil when the circuit is supposed to be active, you might have a wiring problem or a faulty switch. A lack of continuity across the contacts when the relay is activated suggests a bad relay.
If you’re consistently blowing fuses related to a specific circuit, a malfunctioning relay could be the cause. A relay that’s shorted internally can draw excessive current, overloading the circuit and causing the fuse to blow. Always address the underlying cause rather than just replacing fuses repeatedly.
Understanding Relay Pinouts and Wiring Diagrams
Relays might seem simple, but understanding their pinouts is essential for proper installation and troubleshooting. Each pin has a specific function, and miswiring can lead to serious problems. The standard 5-pin relay, for instance, typically has pins for the coil (85 and 86), a common terminal (30), a normally closed terminal (87a), and a normally open terminal (87).
Wiring diagrams are your best friend when dealing with relays. They show you how the relay is connected to the rest of the electrical system, including the switches, sensors, and devices it controls. Learn to read these diagrams, and you’ll be able to trace circuits, identify potential problems, and make repairs with confidence.
Many relays have a small diagram printed directly on the casing, showing the pinout and internal connections. This is incredibly helpful when you’re working under the hood and don’t have access to a wiring diagram. Take a moment to study this diagram before disconnecting anything.
If you’re adding aftermarket accessories, like auxiliary lights or a new sound system, using relays is crucial for protecting your car’s electrical system. Wiring these accessories directly to the existing circuits can overload them, leading to blown fuses or even damage to the wiring harness. Use a relay to isolate the new accessory and provide it with its own dedicated power source.
Extending Relay Lifespan and Preventing Failures
Relays, like any mechanical component, have a limited lifespan. However, you can take steps to extend their life and prevent premature failures. One of the most important factors is keeping them clean and dry. Corrosion is a major enemy of electrical contacts, so protect your relays from moisture and contaminants.
Regularly inspect your car’s fuse box, where many relays are located, for signs of water intrusion or corrosion. If you find any, clean the area thoroughly and apply a dielectric grease to the relay terminals. This will help prevent corrosion and ensure a good electrical connection.
Avoid overloading circuits controlled by relays. If you’re constantly blowing fuses or experiencing intermittent electrical problems, it could be a sign that the relay is being stressed beyond its capacity. Consider upgrading to a higher-rated relay or splitting the load across multiple circuits.
Think of relays like any other service item, just like engine oil or tires. Although they are not necessarily part of a normal service schedule, it is beneficial to get them checked during any routine maintenance visits. Identifying potential problems or weaknesses before they happen will save money and time in the long run.
Here’s your buying guide:
Best Car Engine Relays Under $20
Hey there, fellow car enthusiast! Ever found yourself stranded because of a faulty relay? It’s a surprisingly common problem, and often a simple, inexpensive fix. But with so many options out there, finding the best car engine relays under $20 can feel overwhelming. That’s why I’ve put together this guide to help you navigate the world of automotive relays and pick the perfect one for your ride, without breaking the bank. Let’s dive in!
Understanding Your Car’s Needs: Voltage and Amperage Ratings
First things first, knowing the correct voltage and amperage rating for your relay is absolutely crucial. It’s like making sure you’re using the right kind of charger for your phone – using the wrong one can lead to damage, or simply not work at all. Check your car’s manual or the old relay itself to find this information. It’s usually printed right on the relay.
Think of it like this: voltage is the “pressure” and amperage is the “flow” of electricity. You need a relay that can handle both the pressure and the flow of the circuit it’s controlling. Too low of a rating and the relay could burn out, too high and it might not function correctly, or worse, could still cause damage to other components. Matching the voltage and amperage is the key to reliable performance and safety. When looking for the best car engine relays under $20, make sure this is the first and most important factor you check.
Terminal Configuration: Matching Your Car’s Wiring
Next up: terminal configuration. This refers to the arrangement of the pins or terminals on the relay. Relays come in various configurations, like single pole single throw (SPST), single pole double throw (SPDT), and double pole double throw (DPDT). Confused? Don’t worry!
Essentially, you need to ensure that the replacement relay has the same terminal configuration as the original. Otherwise, it won’t physically connect to your car’s wiring harness. Visualize it as trying to fit a square peg into a round hole. Carefully examine the existing relay and compare its terminal layout with the diagrams provided in the product descriptions of the relays you’re considering. Matching the terminals ensures a proper and secure connection.
Relay Type: SPDT vs. SPST (and others)
Building upon terminal configuration, understanding the different relay types like SPDT (Single Pole Double Throw) and SPST (Single Pole Single Throw) is pretty important. SPST relays are basically simple on/off switches, while SPDT relays can switch between two different circuits.
Imagine you’re controlling a light. An SPST relay would just turn it on or off. An SPDT relay, however, could switch the light between two different brightness levels, or even switch it to a completely different light source. Choosing the correct type of relay is essential for your circuit to function as intended. The specifications for best car engine relays under $20 often state the type prominently so be sure to check them.
Build Quality and Materials: Durability Matters
Now, let’s talk about build quality. Even though you’re aiming for budget-friendly options, you still want a relay that’s built to last. Look for relays made from durable materials that can withstand the harsh conditions under the hood of your car. Think about temperature extremes, vibrations, and exposure to moisture.
A relay made from cheap, flimsy plastic might crack or melt under high heat, while one with poorly made contacts could corrode quickly. Read customer reviews and look for relays that are described as being robust and well-made. Paying a little extra attention to the build quality can save you from having to replace the relay again in the near future.
Brand Reputation: Sticking with Trusted Names
When it comes to car parts, brand reputation often matters. While there are certainly some hidden gems out there, sticking with well-known and reputable brands can increase your chances of getting a reliable and durable relay. These brands typically have a track record of producing quality products, and they often offer warranties or guarantees.
It’s like choosing between a generic brand of cereal and a name-brand one. While the generic might be cheaper, you’re often sacrificing quality and taste. Look for brands that are known for their automotive electrical components. Reading reviews and comparing brands can help you make an informed decision and find the best car engine relays under $20 from a trustworthy source.
Environmental Protection: Weatherproofing and Resistance
Your car’s engine bay is not exactly a gentle place. It is exposed to extreme temperatures, moisture, dirt, and vibrations. So, the relay you choose should ideally be resistant to these factors. Look for relays that are described as being weatherproof or waterproof. This usually means they have some kind of sealant or protective coating that prevents moisture from getting inside and corroding the internal components.
Think about it like this: you wouldn’t leave your phone out in the rain without a protective case, would you? The same principle applies to your car’s relays. A relay that’s properly protected from the elements will last much longer and perform more reliably. While it may be difficult to find completely waterproof options in the under $20 category, focusing on relays that are described as being weather-resistant is a smart move.
Price and Value: Balancing Cost and Quality
Finally, let’s talk about the elephant in the room: price! You’re looking for the best car engine relays under $20, so you obviously want to get the most bang for your buck. However, it’s important to remember that you often get what you pay for. Don’t be tempted to buy the absolute cheapest relay you can find, as it might be made from inferior materials and won’t last very long.
Instead, focus on finding a balance between cost and quality. Look for relays that offer good value for money, meaning they’re well-made, reliable, and come from a reputable brand, all within your budget. Compare prices from different retailers and read reviews to see what other customers have to say about the relay’s performance and durability. Finding that sweet spot between affordability and quality is the key to getting the best car engine relays under $20.
FAQ
What exactly is a car engine relay and why do I need one?
Think of a car engine relay as a tiny but mighty switch that controls the flow of electricity to larger, more power-hungry components in your engine. Instead of directly routing a large current to things like your fuel pump, starter motor, or air conditioning compressor (which could damage your car’s sensitive wiring), the relay uses a small current to open or close a circuit for the big guys. This protects your electrical system and ensures your car starts and runs smoothly!
Essentially, it’s like having a gatekeeper for your car’s electricity. If the relay goes bad, it can prevent those key components from getting the power they need, leading to a car that won’t start, has trouble running, or has other electrical issues. Replacing a faulty relay is often a much cheaper and easier fix than dealing with a blown fuse or, even worse, a damaged component.
How do I know if my car engine relay is bad?
There are a few telltale signs that a relay might be on its way out. One common symptom is your car not starting, even though the battery seems fine. You might hear a clicking sound when you turn the key, which could indicate the relay is trying to engage but failing. Other symptoms can include intermittent starting problems, issues with your fuel pump, or even your car suddenly stalling while driving.
Another simple test involves swapping relays. If you have a relay for a less critical component that is the same type as the suspected bad one (check your owner’s manual for locations), you can temporarily swap them. If the problem moves to the component controlled by the swapped relay, you’ve likely found your culprit! Of course, proceed with caution and make sure both relays are compatible before swapping.
Can I replace a car engine relay myself, or do I need a mechanic?
Replacing a car engine relay is generally a pretty straightforward DIY job, even for those with limited automotive experience. Most relays are simply plugged into a socket in the fuse box, usually located under the hood or sometimes inside the car. All you typically need to do is locate the faulty relay (refer to your car’s owner’s manual), unplug it, and plug in the new one.
However, if you’re uncomfortable working with electrical components, or if you’re not sure which relay is bad, it’s always best to consult a qualified mechanic. They have the tools and expertise to diagnose the problem accurately and ensure the replacement is done correctly. Plus, if the problem turns out to be something more complex than just a faulty relay, they can address it properly.
Are all car engine relays the same? How do I choose the right one?
Definitely not! Car engine relays come in different shapes, sizes, and amperage ratings. Using the wrong relay can lead to problems, so it’s crucial to choose the correct one for your specific vehicle and the component it controls. Refer to your car’s owner’s manual or the markings on the old relay to determine the correct specifications.
The most important factors to consider are the voltage, amperage rating, and the number of pins. Also, make sure the pin configuration matches your original relay. Many online auto parts stores also have “search by vehicle” tools that can help you find the correct relay based on your car’s make, model, and year.
What does “SPDT” and “SPST” mean when referring to relays?
SPDT and SPST refer to the type of switch the relay controls. “SPDT” stands for Single Pole Double Throw, which means the relay can switch a circuit between two different paths. Think of it like a railroad switch that directs a train down one track or another. SPDT relays are often used in more complex applications where you need to control multiple circuits.
“SPST” stands for Single Pole Single Throw, and it’s a simpler type of relay. It acts like a basic on/off switch, either closing a single circuit or opening it. SPST relays are commonly used for simpler applications like turning a light on or off. When choosing a relay, make sure the type (SPDT or SPST) matches the original relay being replaced.
Are cheaper car engine relays reliable?
While it’s tempting to save money on a cheaper relay, it’s important to consider the potential downsides. A very inexpensive relay might use lower-quality materials, which could lead to premature failure or even damage to your vehicle’s electrical system. Reliability is key when dealing with car components.
However, a higher price doesn’t always guarantee better quality. Look for relays from reputable brands with good reviews. Read customer feedback to get a sense of the relay’s performance and durability. Also, check if the relay meets industry standards and certifications. Sometimes, a slightly more expensive option from a trusted brand offers better value in the long run due to its reliability and longevity.
How often should I replace my car engine relays?
There’s no set schedule for replacing car engine relays proactively, as they can last for many years under normal conditions. Relays typically fail due to age, wear and tear, or exposure to harsh conditions like extreme temperatures or moisture. Instead of replacing them preemptively, it’s best to replace them only when they show signs of failure.
However, if you live in an area with extreme weather conditions or if you frequently use the components controlled by the relays (like your air conditioning), it’s a good idea to inspect them periodically. Look for signs of corrosion, damage, or excessive heat. Keeping your electrical system properly maintained can help extend the life of your relays.
Final Verdict
Alright, now you’re armed with the knowledge to hunt down the best car engine relays under $20 without breaking a sweat. You’ve seen the options, understood the specs, and hopefully, feel a bit more empowered to tackle that automotive gremlin. Remember, keeping your ride running smoothly doesn’t have to drain your wallet. It’s all about being smart, informed, and a little bit resourceful!
Seriously, don’t let a faulty relay leave you stranded or stuck paying exorbitant mechanic fees. You’ve got this! Go out there, find the perfect fit for your vehicle, and get back on the road with confidence. Think of it as a mini-victory, a testament to your DIY spirit. That feeling of accomplishment when you fix something yourself? That’s priceless! Now go get ’em!