Common causes of vehicle sluggishness include transmission problems, failed oxygen sensors, hose leaks and damaged valves. CoastViews Magazine contributor Sherri Ingalsbe writes that sluggish vehicles experience reduced fuel efficiency and often exceed legal emissions requirements. Transmission problems are notoriously expensive, but many other causes of sluggishness only require replacement of inexpensive components.Know More
Tom and Ray, hosts of the Car Talk radio show and advice column, explain that sluggishness is often a symptom of fuel-delivery problems. For example, improper fuel-injection patterns quickly hamper acceleration and produce sluggish responses at low speeds. This happens because the unbalanced injection pattern periodically floods the engine with excess fuel. This problem usually disappears at speeds above 30 MPH.
Chemical residue inside a car's engine and hoses also make the car feel sluggish. This residue develops gradually as fuel, oil, coolant and other fluids circulate through the vehicle. The most effective way to dislodge and remove the residue is with a professional Motor Vac treatment. The Motor Vac shoots pressurized industrial solvents through all the hoses, chambers and tanks. This treatment is highly effective against sticky substances such as resins.
Although most sluggish vehicles have dirty engines or faulty fuel injectors, there are also other possible causes. The most serious and expensive is a faulty catalytic converter. Owners of older vehicles frequently choose to purchase another car rather than replacing this pricey part.Learn more in Car Parts & Maintenance
Brake-proportioning valves equalize the pressure from the master cylinder so the front and rear brakes apply evenly. Without the proportioning valves, the front brakes receive more braking pressure than the rear, causing the rear of the vehicle to lift and pressing down the front of the vehicle.Full Answer >
An average sedan is just under 73 inches wide not including side-view mirrors. Side-view mirrors add up to 10 inches to the overall width. For example, a 2015 Ford Fusion measures 75.2 inches wide with the side mirrors folded and 83.5 inches with them open.Full Answer >
A car jerks because of a clogged fuel injector, a dirty fuel filter or because the transmission is about to fail. If the engine is manual rather than automatic, then the car might jerk because of improper shifting.Full Answer >
If a car is hard to start, the issue is often the battery. While a dead battery does not turn the starter at all, a weak one turns it very slowly. This slow turn does not create enough compression to cause the fuel to ignite in the cylinders, making it difficult to start the vehicle.Full Answer >