Why do i all of a sudden get low MPG?

Question:
2002 grand am 2.2 4cyl. it always got over 300 miles on a full tank of gas but now it gets about 200 on a full tank. I noticed this ever since i changed my air filter, its the correct filter but can that be a problem?

Answers:

with out buying anything how can i make my exhaust on my car louder?

I would check to ensure that when you changed the air filter that you did not accidentally disconnect any hoses or wiring connectors.

How can u fix a speedometer?

anytime my MPGs drop suddenly i look at my hubs, they are locked. so i unlock them and boom better mileage.

MAP sensor...replace it?

your car needs hefty tune up// needs// spark plugs// wires //cap// rotor// tune first have put on diagnostics machine and go from there// goodluck

car hard to start when hot?

Check all vacuum hoses for proper connection,as this could cause poor gas mileage.Do you have a locking gas cap?Some one could be stealing gas from you.

Need a timing belt for my car, its for a 1.4 corsa, how much will it cost?

Check the air pressure in your tires. The more at level the air the better the mileage.

Can I drive my truck to an auto repair shop if the water pump is out? Or how far can I drive it?

when was the last time u tuned it up? did u change name on spark plugs? like from champan to bosh? try replace the o2 sensor and change back to what even air filter u had in thier at frist put a new beter coil in and it should be good to go

what can i change on my 01 expedition to improve my gas milage i just bought the truck 3 weeks ago are there?


i have a 4Cyl 2.2 L motor and i have replace alot of thinks and i still can't get it back to about 300 miles a ago i get close tho i get about 250 miles

Is there any website telling about the parts of car and how it is designed?


good luck

can u help me i need to know how to fit a fan belt on a sprinter 312 van?

beleive it or not I have found diferent gas from different stations give me different MPG readings so make sure you burn the the same gas each time and same octane too try to see if it averages out to be the same each time , if they do come out to still being too low for you I would recomend you to have the car checked out may be you do need some sort of tune up, how many miles does it have between oil chages makes a difference too.
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