Plano Auto Repair

A car that hesitates for the first few minutes of driving can be frustrating because the problem seems to disappear once the engine warms up. You pull away from a stop, press the accelerator, and the engine stumbles or feels flat. Ten minutes later, it drives normally. That warm-up pattern gives us useful information. Several engine systems operate differently during a cold start, including fuel mixture, ignition timing, idle control, and sensor strategy. A weak component can struggle during those first few minutes and then behave normally once it warms up. Cold Engines Need a Different Fuel Mixture When the engine is cold, it needs a richer air-fuel mixture than it does at normal operating temperature. The computer adds extra fuel and adjusts other settings until the engine warms up enough to switch into its normal strategy. If the computer receives inaccurate temperature or airflow information, that mixture can be wrong. Too little fuel can create hesitation or s ... read more

We have all been there: you climb into your car, turn the key, crank the climate control, and wait for that crisp arctic breeze. Instead, you get a breath of air that feels exactly like the ambient temperature outside. When your air conditioning stops working, the prime suspect is almost always a refrigerant leak—often still called Freon in everyday conversation, though modern cars use newer chemicals like R-134a or R-1234yf. At our shop, we deal with a flood of A/C issues as soon as the weather warms up. Many drivers treat a lack of cold air as a minor annoyance, planning to look into it whenever they get a free weekend. However, an A/C leak is a bit different from a broken radio or a cracked cup holder. It involves a high-pressure chemical loop that directly affects other parts of your car. Today, we want to walk you through how to spot a leak, why ignoring it is a bad idea, and what the real-world numbers look like when it comes time to pay the bill. The Signs: How ... read more

When the weather forecast predicts a summer afternoon temperature of close to 100 degrees, most people think about heading to the local pool or turning up the home air conditioning. But down at Davenport Motor Company, our team of mechanics starts thinking about the highway asphalt. While the summer sun feels plenty hot to your skin, the black asphalt on the road absorbs that solar radiation all day long, easily pushing pavement temperatures up into the triple digits. It is not uncommon for highway asphalt to reach a blistering one hundred and forty degrees on a standard July afternoon. Driving on roads that hot is the ultimate trial by fire for your vehicle. While your engine cooling system is working overtime under the hood, your tires are fighting a quiet, desperate battle against the pavement. Extreme summer heat acts like a massive magnifying glass on your ... read more

Seeing one warning light is annoying. Seeing three come on at once feels like the dashboard is trying to start an argument. ABS, traction control, and stability control warnings often appear together because those systems share information. One bad signal can upset all three. The brakes may still work, and the car may still drive, but the safety features that help during hard stops, slick roads, and sudden steering corrections may not be fully available. That makes the warning worth checking sooner rather than later. These Systems Share Wheel Speed Data ABS, traction control, and stability control all need to know how fast each wheel is turning. The ABS uses that information to help prevent wheel lockup during hard braking. Traction control uses it to reduce wheel spin. Stability control uses it to help the car stay on the path the driver intends. If one wheel speed reading drops out, looks incorrect, or does not match the others, the vehicle may shut off several ... read more

Seeing your temperature gauge rise when coolant levels look fine can be confusing. Most drivers assume overheating always means low coolant level, but that is not always true. A car can still run hot even when the reservoir is full, and everything appears normal at a glance. When that happens, the issue usually involves how the cooling system is functioning, not just how much coolant it contains. Thermostat Not Opening Properly The thermostat controls when coolant flows through the engine and radiator. If it sticks closed or does not open fully, coolant cannot circulate the way it should. Even with the correct amount of coolant, restricted flow causes heat to build up inside the engine. This often shows up as rising temperatures during normal driving, especially after the engine warms up. Water Pump Not Circulating Coolant Efficiently The water pump keeps coolant moving through the system. If it becomes worn or damaged, circulation slows down or ... read more