Hi everyone. I am a happy owner of Honda CR-V 1997. It used to give me around 28MPG on average. It suddenly went down to about 20MPG. What could be the reason? I know there could be a lot of factors but such a sudden drop? Any ideas or suggestions? Thanks.
2007-01-06 11:27:27 · 16 answers · asked by The Analyst 2 in Cars & Transportation ➔ Maintenance & Repairs
Check your tire pressure and keep it as high as you can within the vehicle specification. Low tire pressure will increase the rolling resistance of the tires and lower mileage.
Check your air filter. If it's plugged up, change it.
If you haven't had a tune up lately, get one.
Hopefully it's something simple.
Good Luck
2007-01-06 11:39:30 · answer #1 · answered by csburridge 5 · 1⤊ 0⤋
Wrong grade of gasoline.
Plugs are fouling.
Distributor cap is loose and causing weak firings.
Water in the gasoline.
Engine needs to be rebuilt because it is losing compression from worn rings.
You might have a head gasket about to blow. Look for water or antifreeze in the tailpipe if that is occurring slowly. You can wad up a piece of newspaper or papertowel and swab the inside of the tailpipe to check for it. The soot is normal, btw.
You might have loose sparkplug wires. They look connected, but aren't.
Fuel mixture is incorrect. Tune the carburetor time.
Air filter need changing.
Take off the emergency brake when driving. : p
2007-01-06 11:39:29 · answer #2 · answered by Anonymous · 1⤊ 0⤋
A lot of states put alcohol in the gas during the winter. Doesn't get as good of MPG. Since it got cold have you checked the air pressure in your tires? When you run the defroster the A/C compressor will run. That can cut mileage too.
2007-01-06 11:32:03 · answer #3 · answered by tumbleweed1954 6 · 1⤊ 0⤋
A few things could have done this, dirty clogged air filter, bad oxygen sensors will do it...... maybe its time for a tuneup.... also if the check engine light is on get your computer read by an OBD reader. I had a Blazer that got 9mpg.... I changed the oxygen sensors (3) of them, and my mileage went upto 16mpg.
2007-01-06 11:31:07 · answer #4 · answered by Anonymous · 1⤊ 0⤋
You might need an oil change or a tune up. Talk to your local mechanic, or dealer. They might be able to point you in the right direction. You may even have a leak!
2007-01-06 11:31:19 · answer #5 · answered by drycountygrl86 1 · 1⤊ 0⤋
the fuel they use in the winter can reduce it,maybe somebody stole some or if full serve it didnt get put in or where you bought it there pumps are off,thats too big of a drop for even needing a tune up,check your math
2007-01-06 11:39:51 · answer #6 · answered by vincent c 4 · 1⤊ 0⤋
All the advice is good maybe a locking gas cap too. If they just take a gallom or two it will fool you into thinking bad mileage.
2007-01-06 11:37:48 · answer #7 · answered by olampyone 4 · 1⤊ 0⤋
tune up time as ur engine runs ur plug gap incresses with wear and milage suggest u replace ur plugs roter cap air filter ect. good luck
2007-01-06 11:31:13 · answer #8 · answered by Anonymous · 1⤊ 0⤋
if your car is fuel injected the fuel injectors might be cloged. Get some Fuel injector cleaner at most auto part stores.
2007-01-06 11:58:05 · answer #9 · answered by Danny 1 · 1⤊ 0⤋
bad spark plugs
defective oxy sensor
clogged air filter
defective EGR
yary ,,yara...
give and take..
we better hook up the OBD and check for codes.may be we get something more specific
2007-01-06 11:33:03 · answer #10 · answered by Anonymous · 1⤊ 0⤋