Q
is auto stop bad for your engine
@MechanicsPro - Tim, a mechanical engineer with over two decades of experience, shares relevant articles, innovations and ideas to empower the engineering community.
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To engine brake in an automatic transmission vehicle, shift down a gear at a time. Modern automatics often feature a manual or semi-manual mode, indicated by 'M' or '+' and '-' symbols. Start by gently slowing down using the brake, then engage the manual mode. Select a lower gear suitable for your speed—this will engage the engine braking mechanism. Engine braking in an automatic is smoother and less pronounced compared to a manual transmission. It's particularly useful on long descents to prevent brakes from overheating or in situations requiring gradual deceleration. However, use it judiciously to avoid unnecessary strain on the transmission. Always consult your vehicle's manual to understand the specifics of using engine brake with its transmission system and ensure it's designed to handle such operations safely.
Yes, a lit check engine light generally results in an automatic fail in emissions tests. This light, part of a car's onboard diagnostics system (OBD-II), illuminates when the vehicle's computer detects a problem affecting the engine or its emissions control systems. Since emissions tests are designed to ensure vehicles meet emission standards by limiting pollutants, a check engine light indicates there's likely an issue interfering with the car's ability to adhere to these standards. It's worth noting, though, standards and processes can vary by location. Addressing the underlying problem causing the light to come on is essential not only for passing emissions but also for maintaining the vehicle's performance and environmental compliance. It's advisable to have a professional diagnose and repair the issue before undergoing an emissions test.
The 4.6L Ford engine, introduced in the early 1990s, has proven to be a reliable and durable powerplant over the years. It was widely used across various models, including the Mustang, F-150, and Crown Victoria. Known for its adequate power output and relatively good fuel efficiency for its time, the engine has a strong following among enthusiasts. However, like any engine, it has its drawbacks, including some issues with the plastic intake manifold and timing chain problems in earlier versions. With proper maintenance, many 4.6L engines have reached high mileage without major issues. It's crucial for potential owners or those maintaining a 4.6L engine to be aware of its common problems and to stay on top of maintenance.
Yes, the 4.6 Ford engine is generally considered a good engine. It is known for its high durability and longevity. Many users have reported that it can easily reach 300,000 miles without requiring any major repairs, provided it's maintained well. This engine might not be as powerful or efficient as some of the more contemporary engines, but it's reliable, and parts are easily available since it's used in several different models of Ford vehicles.
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