Jump to content

  • Welcome to Auto Parts Forum

    Whether you are a veteran automotive parts guru or just someone looking for some quick auto parts advice, register today and start a new topic in our forum. Registration is free and you can even sign up with social network platforms such as Facebook, X, and LinkedIn. 

     

Troubleshooting With NAPA: Why Is My Car Heater Blowing Cold Air?


Recommended Posts

Posted

Troubleshooting With NAPA: Why Is My Car Heater Blowing Cold Air?

It’s easy to take modern conveniences for granted. An electric coffee pot brewing while you step out of the room. A garage door that opens with the click of a button. Heated air pumping out of the vents into your vehicle on a cold winter’s morning. But what would you do if those conveniences just stop working? Specifically, how do you fix a car heater that is blowing cold air?

Before you panic, let’s double check the obvious. Is your vehicle warmed up enough from a cold start to push out heated air? For your car heater to function properly, the temperature gauge on your dash (which measures the heat around your engine) should read in the middle, not in the blue cold zone or the red hot zone. If you’re too impatient to wait for your vehicle to run long enough to push out hot air before hitting the road, our experts suggest

link hidden, please login to view
to give yourself some extra time. Next, let’s check the settings of your internal cabin temperature controls. Has your automatic climate control system set itself to defrost only for the first few minutes? Are the vents on your dashboard open and angled properly to disperse a strong current of air?

If those quick checks were the problem, we promise, we won’t tell anyone. However, if you still haven’t found the answer to ‘why is my heater blowing cold air into my car,’ the next step is to lift the hood to remove any possible obstructions, like leaves and debris, that might be blocking the cold air intake system. Airflow backup could also be caused by a dirty, clogged cabin air filter. A

link hidden, please login to view
keeps the air inside your vehicle clean, while also trapping dust and dirt before it enters your heater core and evaporator. Locate your air filter, and remove it for inspection. If the pleats are clogged with debris, it’s due for a change. As part of a maintenance routine, replace your cabin air filter every 20,000 miles or 12 months, whichever comes first.

Another easy solution to solving a car heater problem is topping off the coolant level. If the coolant level is low, not only will heat not reach your heater core, but the built-up heat not being transmitted properly by coolant could damage your engine. If your coolant level is low, top it off. Be aware, it is critical that you also check for signs of damaged hoses or loose connections that could be leaking.

Another common problem that causes a car heater to pump out cold air is if the control valves in the thermostat are stuck open or closed. A thermostat is a temperature regulator in the form of a valve, situated between the engine coolant outlet and the radiator inlet. If possible, fix the stuck valves, or follow these tips for a full

link hidden, please login to view

The Fix Is In, And It Won’t Be Pretty

Any quick fix for no heat in a car was mentioned above. If you are still experiencing car

link hidden, please login to view
heating problems, it is likely a more costly and time-consuming solution. Let’s start with the fan, often called the blower. You should hear the fan running if your heater is turned on, especially full blast. It is possible debris has been lodged or wrapped around the fan, which would cause a tapping noise or popping sound. 

If the airflow is weak coming out of your HVAC system, then it is likely a blown

link hidden, please login to view
. When you turn on your interior heat, a fan behind the core starts up and blows heat into the passenger compartment. If there is no air current, the solution could be as simple as replacing a fuse or as complicated as replacing the fan itself.

If your heater is blowing cold air, the fan motor might be working, but the water pump, actuator or heater core could be failing. A car heater not working could be due to the vital role the

link hidden, please login to view
performs. The water pump is typically driven by the accessory drive belt, serpentine belt or timing belt. A worn-out belt can prevent your water pump from operating at peak efficiency. A slow leak from your water pump will cause residue to build up around the pump. Look for coolant trails leading down from the pump or a gunky deposit around the outside.

Still car heater troubleshooting?

link hidden, please login to view
are critical to controlling heat, the A/C and even defrost. Knocking, clicking and fluctuating air flow could point to a bad actuator, or two. Cold air output could be an issue if either of the hoses connected to your
link hidden, please login to view
have become loose. One hose is tasked with transporting hot coolant from the water pump to the heater core. The second hose returns the coolant to the top of the engine. Worst case scenario, if the area inside your vehicle, underneath the dash, is damp from a continuous leak, it is highly likely your heater core needs replaced.

Most drivers are not equipped to fix a car heater blowing cold air. Just to diagnose the problem can require a jack, jack stand and many, many hand tools. The solution, even if simple, could involve specialty hoses, connections and clamps. To replace an entire heater core entails removing several components to get behind the firewall, or even removing the entire dash inside your cabin. Newer model vehicles, packed with sensitive electronics, make things even more challenging. When in doubt, take your vehicle to

link hidden, please login to view
.

Photo courtesy of

link hidden, please login to view
.

The post

link hidden, please login to view
appeared first on
link hidden, please login to view
.

link hidden, please login to view

Sell your car with CarBrain

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Similar Topics

    • By ronaldgbrown84
      Upgrading or replacing your car engine is a significant decision that can enhance your vehicle's performance and extend its lifespan. If you’re searching for the best New Car Engine Dubai options, this guide will help you navigate the market, explore prices, and make an informed decision. Dubai offers a diverse range of high-quality car engines for sale, catering to various budgets and vehicle types.
      Why Invest in a New Car Engine?
      A new engine can breathe new life into your vehicle, ensuring improved performance, better fuel efficiency, and reduced emissions. It’s a cost-effective solution for vehicles experiencing recurring engine problems or those looking to upgrade their existing engine for enhanced capabilities.
      New Car Engine Dubai Price
      The new car engine Dubai price varies widely depending on factors such as the engine model, brand, and specifications. On average, you can expect prices to start from AED 15,000 for smaller engines and go up to AED 50,000 or more for high-performance engines. Luxury car engines or those with advanced technology typically cost on the higher end.
      When budgeting for a new engine, consider additional costs like installation, testing, and warranty packages. Opting for a reliable service center can ensure a hassle-free installation and long-term performance.
      New Car Engine Dubai for Sale
      When looking for new car engine Dubai for sale, Dubai’s automotive market offers plenty of options. You’ll find engines for all vehicle makes and models, including sedans, SUVs, sports cars, and commercial vehicles. Here’s where to look:
      Authorized Dealerships: Guarantee genuine parts and manufacturer support. Auto Parts Stores: Offer a wide variety of engines at competitive prices. Online Marketplaces: Allow you to compare multiple options conveniently. When purchasing a new car engine, always verify the authenticity of the product and request a warranty for peace of mind.
      Where to Find a New Car Engine Near Me?
      If you’re searching for a New Car Engine near me, Dubai is home to numerous reputable service centers and automotive shops. These providers offer personalized assistance, helping you choose the right engine based on your vehicle’s make and model. Look for experienced technicians who can guide you through the selection and installation process.
      Tips for Buying a New Car Engine
      Know Your Requirements: Understand your vehicle's engine specifications to find a compatible match. Check for Authenticity: Always purchase from trusted sellers to ensure genuine parts. Consider Installation Services: Choose a service center that offers professional installation and testing. Request a Warranty: Protect your investment by opting for engines with warranties. Conclusion
      Investing in a 
      link hidden, please login to view is a smart move for anyone looking to enhance their vehicle’s performance and reliability. With a range of engines available at competitive prices, finding the perfect option for your needs has never been easier. For expert advice, high-quality engines, and professional installation services, Visit Service My Car and experience the benefits of a brand-new engine for your vehicle. Don’t wait—revitalize your ride today!
    • By APF
      When selecting parts for a car repair, it pays to know the differences between original and aftermarket parts. Whenever possible, get estimates for both.

      Choosing between original and aftermarket car parts — and even used parts of either type — is all about squaring your priorities with your budget.
      You’ll have different options depending on the part and the shop. And the best choice will depend on whether you’re trying to keep repairs cheap, restore your car’s appearance after a wreck or soup up your ride.
      » SIGN UP:  link hidden, please login to view
      Before we get into that, here are the key differences:
      Original equipment manufacturer (OEM) parts match those that came with your car, and are of the same quality as its original parts. They’re also the most expensive. Aftermarket parts are cheaper, and made by other manufacturers — often several, giving you more options. Used parts may have a bit of wear and tear, but should be inspected or rebuilt to ensure they’ll work. These are the cheapest option. Choosing between aftermarket and OEM parts
      Your decision will depend on the type of repair and the quality and price of the parts. Always look for parts that come with a warranty, even if they’re OEM, so you’ll be protected in case they fail.
      Auto body repairs
      Some aftermarket parts may be OK for 
      link hidden, please login to view, but others won’t be as good, says Michael Calkins, manager of technical services at AAA. “There’s a lot of variation in quality.” For example, he says, aftermarket parts often don’t have the same level of rustproofing as original parts, fit and finish don’t match, or panels don’t align properly. If OEM parts are used in auto body repair, the car should look and work exactly as it did before the damage, because everything will match up. OEM parts are also crash-tested, unlike many aftermarket parts.
      Aftermarket parts come at varying price points and levels of quality, but because they are cheaper, insurance companies often prefer them. If you want OEM parts but are dealing with an insurer that wants the shop to use aftermarket parts, ask to pay the difference.
      “There’s also the option of used parts, depending on the age of the vehicle,” Calkins says. “It may be cheaper than an aftermarket part but still have all of the original quality.”
      Mechanical repairs
      A used part, whether it’s OEM or aftermarket, can really save money on repairs under the hood, so long as it’s inspected first and warrantied. And some aftermarket companies reverse-engineer their products to be even better than OEM versions.
      For example, many car buffs will tell you that you can get heavy-duty shocks and struts or brake pads that are made of stronger materials. Scan some reviews online, or talk with your mechanic if you’re not sure whether an aftermarket part could be an upgrade.
      Adding some extras
      If you’d like to modify your ride by adding something like a backup camera or back-seat TV screen, you’ll probably be looking for aftermarket parts. Certain aftermarket upgrades could increase 
      link hidden, please login to view. This is especially true for improvements like a better sound system or alloy wheels, rather than mechanical repairs. Who provides OEM or aftermarket parts?
      The options you’ll have for parts depends on the nature of the repairs and what type of shop you take your car to:
      Dealership repair shops will offer only OEM parts — they have no reason to offer a cheaper product from a competitor link hidden, please login to view may be able to offer you a choice between OEM and aftermarket parts Independent garages that specialize in your type of vehicle will likely have both, but with quicker access to OEM parts, including used OEM parts, which can really save you Auto body shops can offer both, but if your collision repair is part of an insurance claim, the insurer will likely prefer aftermarket parts to save money Depending on the job, the cost of OEM versus aftermarket parts varies. Whenever you’re given the choice, ask to see estimates for both so you can weigh your options.
      Source: 
      link hidden, please login to view
    • By Clifford Auto Parts
      When it comes to maintaining your vehicle, every car owner faces one big question: "How do I find reliable auto parts without breaking the bank?" Whether you're dealing with a check engine light, a sluggish transmission, or just looking to upgrade your car’s performance, knowing where to start can make all the difference.
      At Clifford Auto Parts, we’ve worked with thousands of car enthusiasts and everyday drivers across the U.S. to provide premium-quality Engine Control Modules (ECMs), Powertrain Control Modules (PCMs), and other essential components. Here’s what we’ve learned about keeping your car in peak condition—and how the right parts can save you time, money, and stress.
      The Lifespan of Your Vehicle Depends on the Right Parts
      Let’s face it: Not all auto parts are created equal. Cheap, low-quality parts might save you a few dollars upfront, but they often lead to costly repairs and frustration down the road. Here’s why investing in the right components matters:
      Improved Performance: High-quality parts ensure your engine, transmission, and other systems run smoothly. Increased Safety: Faulty parts can lead to dangerous situations on the road. Reliable components minimize the risk of breakdowns. Long-Term Savings: Durable, well-made parts reduce the need for frequent replacements, saving you money in the long run. Signs You Need a Replacement Part
      Not sure if it’s time to replace a component in your car? Here are some red flags to watch for:
      Check Engine Light: This is often linked to issues with the ECM, PCM, or other key systems. Erratic Shifting: A sign that your Transmission Control Module (TCM) might need attention. Poor Fuel Efficiency: If your gas mileage drops, your car’s engine control systems could be the culprit. Unusual Noises: Clicking, grinding, or knocking sounds can signal worn-out parts that need immediate replacement. Why Choose Clifford Auto Parts?
      Finding reliable auto parts doesn’t have to be a hassle. At Clifford Auto Parts, we’ve built our reputation on quality, transparency, and exceptional customer service. Here’s why thousands of drivers trust us:
      OEM-Quality Parts: All our products meet or exceed OEM standards, ensuring a perfect fit and reliable performance. Fast, Free Shipping Across the U.S.: Get the parts you need delivered to your doorstep quickly—no extra costs. Lifetime Warranty: Every part we sell comes with a lifetime warranty, so you can buy with confidence. Expert Support: Not sure which part you need? Our knowledgeable team is here to help. Top-Selling Auto Parts at Clifford Auto Parts
      🚗 Engine Control Modules (ECMs): Optimize your car’s engine performance and fuel efficiency.
      🔧 Powertrain Control Modules (PCMs): Improve power delivery and keep your vehicle running smoothly.
      🚙 Transmission Control Modules (TCMs): Say goodbye to erratic shifts and hello to seamless driving.
      Our parts are available for top brands like Chevrolet, Ford, Dodge, GMC, and Chrysler.
      Pro Tips for Car Owners
      Here’s how to keep your vehicle running at its best:
      Don’t Ignore Warning Signs: The longer you wait, the more damage a faulty part can cause. Buy from Reputable Suppliers: Ensure your parts come from trusted sources like Clifford Auto Parts. Maintain Regular Service: Even the best parts need proper care—schedule routine maintenance with your mechanic. Join the Conversation
      We know the car community loves to share tips, tricks, and personal experiences. Drop a comment below and let us know: What’s the one upgrade or repair that made the biggest difference for your car?
      Need help finding the right part? Check out our webiste for high-quality, affordable components.

    • By Dorman Products
      Electric Pump vs Air Compressor Vertical Shop Press Promo Video
    • By CarPartAU
      Are you looking for some stores to buy used or new car parts? If so, then Car Part is the place for you. Rather than sharing a limited list of stores, we at Car Part have come with the list of the best link hidden, please login to view. These sites will connect you with a large number of car part sellers across Australia. Without wasting much time, fill out the form and click send a request button. To know more, visit us today.
       


×
  • Create New...