Tag Info

Hot answers tagged

6

As DucatiKiller notes, coasting downhill in neutral is usually considered unsafe, as it increases the chances of overheating your brakes. It is also illegal in many jurisdictions. Questions about driving techniques are generally off topic here, but you do have a question about how engines work that I think is (maybe marginally) appropriate: why do you get ...


4

Over on the linked question, I talked about how engine braking works to reduce fuel consumption at a high level: Coasting: nothing much. The transmission is effectively disengaged (it's more complicated than that but it's a reasonable approximation). The engine is idling - burning fuel to keep itself spinning. Engine braking: the transmission is ...


1

I believe your fuel consumption indicator will be using a combination of the throttle position sensor, manifold pressure sensor and/or airflow meter to calculate your fuel economy. While coasting with your foot off the gas, the throttle would be fully closed and the manifold pressure would be negative/vaccuum. The computer would read this as absolute ...


1

I understand your primary motive is to save fuel but there are certain risks you encounter when going down a steep grade, especially with corners. You will prone to 'ride your brakes' if you are required to slow down repeatedly OR are attempting to maintain a certain speed going down the grade. If you are constantly using your brakes in these situations ...


1

This particular problem was solved by replacing the coolant temperature sensor and installing a thermostat. Apparently the coolant temp sensor was telling the engine it was -20C and so it was running extremely rich and was artificially raising the idle. After replacing that the fuel mileage got much better, but it was still running a bit high, and when I ...


1

I had the same issue. I just managed to soft it. There may be a few causes to this, but for my case, I found that the idling air intake hose connecting the lower part of the throttle body was missing the hose clamp. Due to this, during idling, additional air were being sucked in via the small gap between the hose and the throttle body. I think the guy who ...



Only top voted, non community-wiki answers of a minimum length are eligible