Why do Hondas have rev hang? This is a common question that many car owners ask. In this article, we will give a detailed answer and explanation to the topic in question. We will also answer related questions people are asking, so, let us dive right in.
Why do Hondas have rev hang?
Honda’s rev hang is a result of its VTEC engine tuning. This system was created to provide the best power and economy in a wide range of conditions by using different camshaft profiles. Each profile has its advantages for different driving conditions, which is what accounts for many of the differences between the stock set up, and the tuner set up.
Hondas are known for having a rev hang, or pronounced hesitation when depressing the throttle. This doesn’t mean that your new Honda is not working at its optimum performance level, it’s just part of what makes Hondas unique and fun to drive! Hondas having rev hang means that when you let go of the throttle, the engine will hold at that RPM. It’s a trait Honda engines share with other Japanese cars, and it’s not unique to Hondas. Hondas have rev hang because when you let off of the gas in a Honda, the engine continues to rev until it hits the red line.
What is rev hang?
Rev-hang is a condition that occurs when the intake of a car at high rpm causes the rear end of the vehicle to kick out. This happens because the piston in the carburetor does not advance quickly enough to create a vacuum, which is needed to move fuel through the lines from the tank to the carburetor. This can happen at high RPMs and cause major damage if you brake too quickly, or go from throttle to brake abruptly. The cause of rev-hang is when a vehicle’s engine repeatedly stalls during initial acceleration. Rev-hang is most common on vehicles that are equipped with automatic transmissions.
Can you get rid of rev hang?
The short answer is yes. The long answer is it depends on what’s causing the rev hang and whether a tune can cure it. Rev hang occurs when an engine’s fuel injection system cannot supply enough fuel to meet demands during part throttle acceleration, causing hesitation or bogging down of the engine.
Rev hang is the phenomenon of one cylinder firing while the remaining cylinders are still in the process of being ignited. This is caused by slight timing differences between individual cylinders, which makes it impossible to predict when every cylinder will fire. It is most commonly associated with high performance engines and high boost levels.
You may be able to eliminate rev hang by making sure the engine has sufficient oil and air pressure. You may also want to download a tune-up app like Torque and monitor your engine performance while driving around.
What does disabling rev hang do?
Disabling Rev Hang disables the automatic rev-up and down of the motor when at certain higher levels of power. Some users report that this can help with shorting/protective fuses.
Why does Rev Hang Happens in Manual Cars?
Almost all manual transmission cars have a problem called Rev Hang. where it will hesitate/surge when clear of the throttle. What causes this to happen, and how can it be fixed. When you’re driving a manual transmission car, you should take note of this problem and know how to deal with it in order to avoid any accidents.
Rev hang happens when you are in a gear and want to go fast but the gear stick is slightly raised. So instead of just going fast, your revs start rising above the optimum red line. When you eventually drop that gear and make the second shift, you feel an uncontrollable surge forward.
What is a rev limiter used for?
A rev hold or rev limiter is used by a car’s engine control unit (ECU) to prevent an engine from producing too much power and causing damage. The ECU limits the amount of fuel delivered to the engine, which causes ignition retardation, reducing the power output.
Why Do Petrol heads Hate rev hang?
- Petrol heads hate rev hang because it makes them do something they don’t like. They like driving their cars hard, or being able to really drive fast. So when the engine is winding up and not going anywhere they get frustrated. Rev hang also creates an annoying sound in many engines that drives petrol heads nuts. And although you might not realize it, every time you experience rev hang at a stop light, you are wasting precious fuel too!
- Petrol heads hate rev hang because it makes engines laboriously work against their natural torque curve. This is like holding a weight above your head, look down while you do it, and then try to lift it up. The second time you attempt to lift it, you think, “why am I doing this?”
How do I get rid of the rev hang?
The problem of rev hang is due to the ignition timing being incorrect. This causes the engine to stall at about 2000 rpm when idling, but will run correctly once it gets above this speed. The most common cause of this is timing being set too advanced – either because of a faulty distributor or a worn distributor gearset. Check that your plug leads are on straight and tight and ensure that the plugs are clean and gapped correctly (0.28mm).
If your car is still stalling after optimizing these items then you may need to adjust your ignition timing by removing the distributor cap from the engine. Using an ignition timing light, adjust your distributor so that when you apply full throttle it fires 10 degrees before top dead centre (when piston nears top of stroke) which should eliminate rev hang in most situations. If you don’t have access to an ignition timing light then inspect your distributor rotor for any cracks or scratches on its face which may indicate uneven contact with the stator winding.
Would disabling rev-hang make for a smoother drive?
Yes, disabling rev-hang could make the drive more pleasant. When a vehicle downshifts, or decelerates sharply and quickly, it points the nose of the car downward and causes it to accelerate forward again as it travels through its gear cycle. This causes the nose of the car to dip as well as the tail end to rise up during this process. By disabling this feature, a milder transition into each gear can be made and allow for a smoother ride for passengers inside.
Do manual cars rev higher than automatic?
A common misconception is that manual cars rev higher than automatic vehicles. In fact, manual transmission cars do tend to have slightly higher rev limits, but the difference is mostly in perception; Automatic cars’ engines actually require a higher number of revolutions due to an extremely short period of time where the engine will produce full power.
All cars rev higher when driving manually for many reasons. In a manual transmission car, you control the engine speed with your gas pedal and clutch. You can accelerate into any traffic situation. The engine should rev higher when you downshift from a higher to lower gear–that’s good.
Manual transmission cars can rev higher than semi-automatic or automatic transmission cars. It’s generally accepted that manual transmission cars are more powerful and agile than other types of vehicles. While the driver still has control over the vehicle, it’s not quite as easy to shift gears with a manual transmission car than it would be with an automatic transmission car.
Is it OK to drive my automatic like a manual?
Yes, it’s fine to drive your automatic transmission like a manual. Many automatic transmissions have gotten so advanced that you can often shift them exactly as if you were in a manual car. Automatic transmissions use “gear” positions to control RPMs, so finding the right gear at stop lights and stop signs is easy with an automatic transmission.
What happens when you rev a car too much?
If it’s your first time driving an automatic, don’t worry about revving your engine or going too much. You do not need to check your rearview mirror when you come to a stop. Just use the traffic around you as a guide and keep your foot off the clutch while merging onto the freeway.
What is the cause for rev-hang?
It can be caused by a number of things but most commonly an engine mechanical problem. Any parts that are spinning at high RPMs need to balanced properly or else the vibration will cause it to vibrate side-to-side, up and down.
- The second reason could be the mass air flow sensor on newer engines before 2005, after that they went with a more accurate fuel injection system.
- When an engine is idling, the rev-hang is due to the throttle valve closing too slowly at high rpm and allowing the air/fuel mixture in the cylinder to lean out. Then when it opens abruptly, it causes a sudden pickup in torque which feels like a pull or kick.
- It is caused by a number of internal mechanical factors, including engine lubrication, which can make the crankshaft harder to rotate once an engine reaches its target RPM.
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Why do Hondas have rev hang? – Summary.
In summary, we said that Honda’s rev hang is a result of its VTEC engine tuning. This system was created to provide the best power and economy in a wide range of conditions by using different camshaft profiles. Each profile has its advantages for different driving conditions, which is what accounts for many of the differences between the stock set up, and the tuner set up.
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