wuz up yall got a 99 ex a/t getting about 22 mpg whats wrong

 

air filter is probably dirty or your running the a/c?

 

I got about 330 miles on my '96 EX auto with the air on the whole time. Highway miles up and down some mountains. Does this sound about right?

 

Check your tire pressures, too.

When was the last time you changed your oil?

Auto or manual transmission?

 

Tune it up. Air filter, fuel filter, plug, wires, cap, rotor etc. Run some sea foam through it. Also make sure your tire pressures are good.

 

hey man dont feel bad i got 98 ex tht only gets 17.5 mpg. [sm=rolleyes.gif]y?[sm=rolleyes.gif] i dont noe but its not a problem to me since its only 30 bucks for a near full tank

 

that dont sound to bad to me since i only get about 200

 

Well I have a '98 1.4 Civic and I get about 140 miles to 20 litres of juice. That cannot be good for a standard car w/CAI and a De-cat!

My dad has told me to buy a new O2 Sensor, as when they get older they deteriorate and struggle to send the correct voltage to the ECU. Apparently when he bought a BMW 320i coupe a few years back, he was getting really poor MPG (less than 20mpg). It turned out to be his O2 sensor. Mine does look pretty crappy so I think I'll give it a go. Only £20 too, so I have little to lose. Gotta be worth a try.

=chris=

 

I get about 34 mpg with my AC on about more than half the time. If I don't run my AC, its around 38-40. I have 97 HX mt with a quarter of a millions miles.

 

Along with what everyone has said here (tires, filters, sensors, etc), here's a couple of things to think about:

1. How does it run? Does it idle rough? Do you suddenly loose power while accelerating? Does it hesitate or cut out at any time? Is there any kind of smoke coming out the tailpipe (white, gray, black)? All of these are clues that can help you troubleshoot the problem.

2. When you troubleshoot the problem, start from the outside and work your way in, that is, start with the easy external stuff and then work your way into the engine to the more complex answers. Example: start with tires, air filter, check what's coming out your tailpipe, their all easy, then move into more complex possibilities. Only change one thing at a time and then see what happens.

Or, you could just get someone to plug a computer into your OBD port, if you have one......

Good luck!