Coasting down the road to save fuel?

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07-12-2008, 09:01 PM

#11

GrandMasterKhan

Join Date: Jun 2006

Location: Raleigh, NC

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i nearly always engine brake and rpm match downshifting when coming to lights or going down hill.

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07-12-2008, 10:31 PM

#12

Incubus

Join Date: Oct 2001

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Quote:

Originally Posted by esmith51,Jul 13 2008, 03:59 AM

Correct me if i'm wrong but, when the engine is running and you are in a tall gear say running 55 around 3000 rpms the engine is still firing and running at 3000 rpms and using fuel. Because you aren't gaining or losing speed doesn't mean the engine shuts off or shuts off fuel. Running 1000 rpms takes less fuel than running 3000. Unless you cut the car off you are still using fuel.

True, but they're talking about decel. I believe as long as you're over 1000 rpm w/ no throttle input there will be no fuel to the injectors.