I just purchased a 2001 Grand Am, I filled it up and reset trip meter. i went 56 miles and then filled it up again. I calcutlated 15 miles to the gallon. I need some advice on getting better gas milage.
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Re: High gas usage
I was just listening to Car Talk on NPR (Click & Clack) talking about this exact thing in response to a callers complaint about poor mileage. Their advise was to: a. check the compression and b. check the thermostat. With your 2001 being 7 years old your mileage is probably under 100,000 so your compression is probably OK. If you do check it the good compression should be about 150 PSI; if it's down around 100 PSI that could account for the poor mileage. As for the thermostat if your engine temperature doesn't get un into the normal range fairly soon, the computer thinks the engine is cold and adjusts the choke accordingly which uses more gas
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Normally when the gas indicator light comes on, you have about 2 gallons left. Fill up your gas tank and reset your trip counter. Next time your gas indicator light comes on, check how many miles are on your trip counter. Use that number as a guide to when you should fill up with gas. Remember to always reset the counter every time you fill up. Good luck!
when you say it seems to be using too much, that is just a feeling
what you have to do is fill it right up and press the trip meter on the speedo
then you drive/use the vehicle normally until you are around 1/4 tank on the gauge
fill it right up again and record the reading on the trip meter
reset the trip meter and use normally again
repeat the process say for 4 tank fills recording each trip distance
then you will see what the fuel consumption is for example 40 liters for 400 klms is 10 liters per 100 klms or 20 galls for 200 miles is 10 gallons per 100 miles
the requirement to record distance and fuel put in will give you an accurate consumption over traffic, driving and atmospheric conditions from there you can ask --is this consumption figure around right for the car?
Check your fuse , check the wires to the gas tank , could be the mechanism inside the tank , if you cant get it working use your trip meter as a gas gauge so you don't run out , just reset it when you fill your tank and refill before a set # of miles , lets say 200 miles , just fill the tank and reset the trip meter , just remember to fill the tank full and reset to 000 every time so you wont run out of gas
to see what you get for mileage, take it to a gas station and fill it till the pump stops and reset your trip meter. Drive it around like you normally would to work or whatever till the tank is almost empty and go fill it up again till the pump stops. Its best to go to the same pump you used before. Once it is full look to see how many gallons or liters you put in(This is how many you used since the last time you filled up). Take the number of miles/kilometers from your trip meter(the number of miles/kilometers you drove since you last filled up) and divide it by the gallons/liters you used and you will get your miles/kilometers per gallon/liter. Compare this with the rating your vehicle is suppose to get. But remember it can very depending on how you drive.
Miles/kilometers divided by gallons/liters
there is a blower motor resister. it creates a lot of heat sometimes melting the electrical plug. check the plug for signs of melting and check the resister for deformation. Both parts can be purchased at rockauto.com
the float sensor attahced to your fuel pump sounds as though it is not working properly. Usually this occurs when the car rides on E many times and becomes damaged. depending on the model it may be necessary to replaced the sensor assembly or if it is the complete unit the whole fuel pump.
Also, depending on your driving habits your car can use more gas if your are driving in traffic (stop and go). Average out your fuel mileage by filling up a few times and keeping a log of the gas consumed. Do this by reseting the trip meter when you fill up and when you fill up again divide the total mileage on your trip meter by the amount of gas you used by getting the amount of gallons it took to fill up again. ex. 360miles divided by 10gals = 36 miles per gallon.
note. make sure you check your air filter (is it clean?) and tire pressure (32psi) these can be contributing factors to poor gas mileage