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Car slows down while coasting?
My car is a 1997 Honda accord v6
it has a gear of 1, 2 ,d3, d4 when im on d4 and I reach about 35 it coasts greats but on d3 when im around 35-40 miles per hour it slows down to 25. I always test the car going down a hill on neutral going down the hill I hit about 50 before it starts to turn on d4 it goes up to 43 before I turn but on d3 it slows down so much like im braking but im not.
im wondering if the gears are dirty or something and if I need to clean them im not sure im new at this car stuff so if anyone can help me out here TY because my car is missing a lot of mpg as is
3 Answers
- Robert MLv 78 years ago
IT is NORMAL for a car to SLOW DOWN if you DOWN SHIFT and use the engine as a BRAKE! There is such a thing as FUEL EFFICIENT TIRES that get BETTER fuel mileage due to the compound used in the TIRE SIDEWALLS! Take $20 to ANY OIL CHANGE PLACE and get your THROTTLE BODY and IDLE AIR CONTROL VALVE cleaned up to SHOWROOM CLEAN! The final AIR/FUEL mixture is ADJUSTED by these things! a dirty IAC will LOWER POWER and ECONOMY and cause your converter to overheat and to CLOG UP! your O2 sensors will DIE sooner as they fill with CARBON from a BAD AIR/FUEL MIXTURE! DOWN SHIFTING will waste GAS as it send the engine into a higher RPM range! The HIGHER the gear nubmer the more FUEL SAVINGS as the engine runs SLOWER!
- Anonymous8 years ago
It's the lower gear. When you shift the engine has to turn faster to keep up with the speed.
- trurider tLv 68 years ago
It slows down whilst coasting ... Dummy - you obviously haven;t heard of rolling resistance from the tyres or drag from the air and the brakes.
