Quote:
Originally Posted by petey
First off, NEVER tow an automatic transmission without the driven wheels on the road.
|
This is the opposite of what I think you intended. I think you meant to say "Never tow an auto WITH the driven wheels on the road". If your auto Volvo is front wheel drive, it's fine to put the front wheels on a towing dolly so they're off the road, and drag it do the non driven rear wheels are rolling along the road. Indeed, this is how it should be done, if towing an auto any appreciable distance. The owners manual will probably state how far an auto may be towed without disconnecting the driveshafts or putting the driven wheels on a dolly. If in doubt assume 0 miles, or call the AA and let them decide how to tow you so they don't end up liable for wrecking your box
Quote:
|
shifting into neutral to coast will cost you fuel rather than save it. This is because the engine recognises that you are in a coast situation and no longer fuels the engine in the certain knowledge your coasting will keep it going.
|
This is doesn't make sense/is confused/contradicts the sentences you write afterwards.
In a coasting situation (disconnecting the engine from the wheels via clutch/neutral gear in a manual or putting auto gearbox in neutral, and then rolling along) the engine keeps using fuel because the ECU ensures it stays running at its tickover rpm. In an overrun situation (keeping the gearbox in gear, not pressing a clutch pedal down) if you let off the throttle so that the car's momentum, turning the wheels, is pushing the engine faster than the throttle wants it to go, then the ECU will cut fuel delivery to the engine for maximum engine braking and maximum fuel saving