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Do I have a car ac leak? Where do leaks occur?

In Diagnostics by Steves Auto Repair and Tire

A functioning air conditioning is a must on those hot summer days.

When something is wrong with the system, it can make drives home feel long and unpleasant.

A car ac leak is one problem that could keep you from receiving cool, refreshing air.

What are car AC leak symptoms?

Honda HR-V AC hose leaking.

Honda HR-V AC hose leaking.

Typically, when you have an air conditioning leak, you’ll notice that your a/c system isn’t performing the way it should. When you have an air conditioning problem, it might not feel as cool or maybe it stops working completely.

For bad leaks, green ultraviolet dye could be seen if it’s been added to the system.

Another possible sign is smoke, which can indicate a fast leak.

What color is Freon when it leaks out?

Freon doesn’t have a color. The tracer oil has a color. The oil has a dye in it that’s going to be a fluorescent green. 

Refrigerant doesn’t have a color or smell. The smell comes from the inside of the system and the oil we put in there.

Can I drive if my AC is leaking?

Yes, you can drive a vehicle if the air conditioning is leaking.

A car ac leak won’t affect the overheating of the engine or the drivability. The defroster probably won’t work very well, because the compressor should be working for the defroster to be effective.

How serious is an AC leak in a car?

How serious a car ac leak is depends on comfort. 

If it’s 90 degrees, it’s very important to have an air conditioning problem addressed. If it’s in the middle of winter, it’s not that important, except when it comes to the defroster.

What are the most common leaks in a car AC system?

A car ac leak can stem from many places. Some common areas include air conditioning condensers, where corrosion could build up and pinhole leaks may develop. Impacts can cause condensers to leak, as well.

Mazda 3 S AC condenser leaking.

Mazda 3 S AC condenser leaking.

We discovered a leaking and deteriorating a/c condenser on a Mazda 3 S that was brought in for a/c diagnostics.

Condenser seals, gaskets, rubber lines and fittings are other potential sources or air conditioning leaks.

Over time, gaskets can become brittle. Meanwhile, rubber lines and fittings are affected by temperature changes.

Leaks also develop at the evaporator core and air conditioning hoses. A Honda HR-V wasn’t blowing cold air. One of our technicians found that the a/c low side hose that connects the compressor to the condenser was leaking.

Expansion valves, air conditioning compressors, and accumulators are other possible culprits.

We have also come across problems with the schrader valve. This component on the high pressure side of the a/c line was seeping on a Lincoln Navigator.

What happens during car AC diagnostics?

When looking into a car ac leak, we start by making sure there aren’t any noticeable issues. 

Ultraviolet dye and oil are added and the system is recharged with an air conditioning machine. The driver uses the vehicle for an allotted time and we check for dye when they bring it back.

The dye can be seen using a blacklight or certain glasses.

If your air conditioning doesn’t feel like it’s running or isn’t as cool as it used to be, ask a trustworthy autoshop to look into the problem so you can get back to enjoying those summer rides again.

Steve’s Auto Repair & Tire is an authorized Goodyear tire dealer located near Dumfries, Virginia. Automotive repair services are performed on all makes and models, including BMW and Mercedes. Services include oil changes, brakes, alignments, inspections, and computer engine diagnostics.

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Car window problems: What’s wrong with my car window?

In Diagnostics by Steves Auto Repair and Tire

Are you having trouble rolling your window up or down? Did a window mysteriously disappear?

We may not experience car window problems often but they can be inconvenient when they do occur.

What are common car window problems?

What can cause a window to suddenly stop working or not operate the way it’s supposed to?

We have run into various car window problems. These are some possible culprits behind them:

  • Tracks
  • Window motors
  • Window regulator
  • Window switches

Tracks: The tracks of the windows could get dry over time. Every now and then, a silicone spray needs to be used to keep those slides lubricated and keep the resistance down.

Window motors: Window motors getting weak overtime is another possibility. 

Window regulators: The window regulator can go bad. This piece mounts to the bottom of the window and almost looks like a scissor. So as the motor powers up, it pushes the window up. And as it powers down, it will go down. Regulators can be cable driven. The little plastic wheels the cables ride on may wear out, break or snap. This will cause the regulator to bind up and stop. 

Window switches: The window switches might stick or not work, especially on the ones you press one time and the windows go up or down.

Why is my car window having trouble going up?

More commonly, we see problems on the mechanical side – the window motor wearing out and sometimes other electrical issues. Maybe the motor no longer has enough power to move the window up and down.

In the case of switches, it could be something specific, such as the switch being worn out or a fuse. 

There are some problems that have to do with the regulator.

If the plastic wheel the cable rides on breaks the cable becomes misaligned. Therefore, the cable wraps around parts it’s not supposed to.

Window regulator and motor needed on Dodge Grand Caravan.

Window regulator and motor needed on Dodge Grand Caravan

If you have a regulator that breaks a bolt, the window can drop down into the door.

The driver of a Dodge Grand Caravan discovered that the driver side window was missing one morning. We learned that the window regulator had failed and the cables became loose. It needed a new regulator and motor.

How to tell if a window regulator or motor is bad?

We are able to figure out if you have a bad regulator or motor through diagnostic testing, which involves removing the door panel. 

We begin diagnostics by testing power and ground in the motor. If you have power and ground operating the motor independently, we then inspect the regulator.

A broken cable or plastic pulley can be seen through an inspection by removing the door panel. 

Typically, for the first level of testing, you will want to make sure there’s power and ground to the switch. When you apply power to the switch, does it apply power to the motor to let it go up and down?

How do I know what’s wrong with my car window?

Both of the front windows stopped working on a Chevrolet Cruze. The window regulator assembly was broken on both sides.

There are a couple of signs that could potentially alert drivers of a problem. 

If they hear a crunching noise, a lot of times it’s an indication the cable that drives the regulator is off track. What you’re hearing is the cable wrapping around something.

A window that suddenly stops working is another symptom to watch for. Perhaps the window was working and the next time you get in the vehicle it won’t go up and down. If it will start working again when you give the base of the door a light tap, generally it means that it has a weak motor.

These are a couple of ways you can determine if it’s a motor or regulator, but most of the time you have to pull the door panel off and have an inspection performed.

Steve’s Auto Repair & Tire is an authorized Goodyear tire dealer located near Manassas, Virginia. Automotive repair services are performed on all makes and models, including BMW and Mercedes. Services include oil changes, brakes, alignments, inspections, and computer engine diagnostics.

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Steve’s Auto Repair participates in air conditioning training

In Diagnostics, Maintenance by Steves Auto Repair and Tire

Our technicians, service advisors and managers walked away from air conditioning training with new insight and some tips.

NAPA Autotech held an “A/C System Operation and Diagnostics” course at Steve’s Auto Repair and Tire, 2603 Hanco Center Drive in Woodbridge.

The class covered how a car ac works, servicing the system, and diagnostic testing.

Air conditioning certification

Becoming certified in air conditioning is one topic that stood out to a couple of technicians.

One of our Master Technicians has been working on a/c systems for decades. This was the first time he heard about a certification. The day after the air conditioning training, he earned his certificate.

An Apprentice Technician who is already certified realized that he should retake it.

Hybrid and electric vehicles

AC System Operation and Diagnostics training.

AC System Operation and Diagnostics training

Hybrid and electric vehicles were covered in the a/c training, as well.

One part of the presentation that interested the technicians is that hybrids and electric vehicles need non-conductive fluid.

If you get any static electricity inside of the oil, then it can cause electrical problems with the compressor.

Looking into a/c problems

The Service Advisors heard about other methods for handling a/c repairs. 

For example, relative temperature testing can be performed between parts of the a/c system. A relative temperature check would show us where you possibly have a flow problem and if the refrigerant is low.

One of the Service Advisors also learned that compressor amperage directly relates to pressure. 

Providing air conditioning training to team members allows them to answer any questions customers have and help those who are experiencing a/c problems.

Steve’s Auto Repair & Tire is an authorized Goodyear tire dealer located near Dumfries, Virginia. Automotive repair services are performed on all makes and models, including BMW and Mercedes. Services include oil changes, brakes, alignments, inspections, and computer engine diagnostics.

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Why do I hear a clanking sound?

In Diagnostics by Steves Auto Repair and Tire

When you hear a sound while driving that seems out of the ordinary, it can be a bit concerning. You may wonder if the noise indicates a major problem.

A clanking sound is one sign that you may notice. It might crop up when items have become worn, loose or broken.

The symptom could mean that a part needs to be tightened or replaced. Sometimes, we catch these problems during our courtesy inspections. But they could also emerge between maintenance services.

Clanking sound causes

What can create a clanking noise? It might stem from different areas on your car, including the suspension system and braking components. 

Here are some potential causes:

  • Spring isolators
  • Brake caliper brackets
  • U-joints
  • Sway bar end links
  • Coil springs
  • Brake hardware
  • Strut mounts
Coil spring with spring isolators.

Coil spring with spring isolators

You may hear a clanking sound if the spring isolators are missing. The isolators, which are between the strut and strut mount, keep the coil spring from moving.

This noise can also be a sign of loose brake parts, such as brake hardware or caliper brackets. Other possible culprits behind clanking include broken sway bar links and broken springs.

The vehicle could have bad u-joints or worn strut mounts, as well.

These components may also make other sounds.

For example, a rattling noise was heard on a Ford Escape. It was caused by a broken sway bar end link.

Brake problems can result in a variety of sounds, including groaning, grinding, squealing and rattling.

Meanwhile, coil springs could rust and break, creating a clunking noise.

Figuring out the problem

Ford Escape sway bar end link broken.

Ford Escape sway bar end link broken

When it comes to car noises, making a few observations can go a long way. If you hear a clanking sound, consider when it occurs. 

Are you noticing it as you’re moving forward? Is the noise more prevalent when you back up? Will it pop up while turning or hitting bumps in the road? Does the sound appear as you touch the brake pedal?

The information you gather can speed up the diagnostic testing by helping automotive technicians narrow down their search.

Our noise diagnostics process involves visual inspections, test drives, and attempting to recreate the sound.

Your auto repair shop might also recommend that you go on a ride with an automotive professional so you can point out the sound as it occurs.

Getting help from an expert

There are a number of possible reasons why a clanking sound can be heard on a vehicle.

Determining the exact cause will require help from an automotive expert.

If you notice a clanking noise (or any other sound), schedule an appointment with an autoshop you trust. 

Because the sound could be telling you that something is wrong with a part, you will want to have it checked out early on.

Addressing the problem as soon as you notice it may prevent it from getting worse.

Steve’s Auto Repair & Tire is an authorized Goodyear tire dealer located near Lake Ridge, Virginia. Automotive repair services are performed on all makes and models, including BMW and Mercedes. Services include oil changes, brakes, alignments, inspections, and computer engine diagnostics.

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ABS light and possible problems behind it

In Diagnostics by Steves Auto Repair and Tire

Is there a light on your car’s dashboard that says “ABS” with a circle around it? This is your ABS light and if it turns on, there could be a problem with your anti-lock braking system (ABS).

The ABS runs as drivers step on the gas, press the brake pedal, and turn. There are wheel sensors that determine how quickly it’s moving by monitoring the high points of tone rings.

Information is collected by a computer and goes to the power control module (PCM) or engine control module (ECM).

If a tire is traveling slower than the rest, brake fluid is sent to it by a modulator valve. This ensures that the wheel won’t lock up and drivers are able to maintain control.

Reasons why the ABS light comes on

Computer problems: Any computer problems are usually going to be associated with the ABS control module.

Malfunctions with another system: Issues connected with different systems can trigger the light, too. This includes the traction control system.

Bad battery: An ABS light may link back to battery problems.

Tone ring: The tone ring is another potential cause. This component might break off or become damaged. 

Braking: If your brakes lock up or you press the brakes really hard, sometimes the warning light comes on as the ABS is going through its function.

ABS wheel speed sensor.

ABS wheel speed sensor

Bad ABS wheel speed sensor: The ABS wheel speed sensor might malfunction or not read correctly. A GMC Terrain and BMW 3-Series had wheel sensors that needed to be replaced. In both cases, the ABS light was turning on intermittently.

Other sensor issues: Other culprits include a chafed or broken wire, or corroded sensor. The end of an ABS sensor is basically magnetic and reads like a gear that’s at the end of an axle shaft, per se. It might have trouble seeing it or too much rust could have built up.

Body control module: It’s possible that something is going on with the body control module (BCM).

ABS diagnostics

How do our technicians perform diagnostic testing for the ABS light? This process involves a number of steps.

We will want to make sure there aren’t any battery problems, such as a weak battery or issues with the terminals.

A scan tool is used to check for codes. There can be codes related to the ABS, wheel speed sensors or ABS control module. The specific code number may vary among manufacturers.

What we do next will depend on the codes that appear and any other issues we find.

The ABS setup could look differently for each vehicle. 

Typically, the wheel speed sensor is going to have a harness connected to it and a connector that’s already there. On the other side of that harness, if there’s damage that goes into the engine compartment, that connector may need to be replaced.

You have 2-wheel and 4-wheel ABS. Pickup trucks might have an ABS sensor in the center of the differential versus one on each side of the wheel.

With the many problems that can lead to an ABS light and the different parts that make up this system, it’s best to rely on a trustworthy automotive expert if this warning light turns on.

Steve’s Auto Repair & Tire is an authorized Goodyear tire dealer located near Lake Ridge, Virginia. Automotive repair services are performed on all makes and models, including BMW and Mercedes. Services include oil changes, brakes, alignments, inspections, and computer engine diagnostics.