Fuel economy has dropped recently. Any ideas?
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I usually overestimate 20 mpg mixed. I put like 5.3 gallons in the last trip to the gas station. A rough estimate was 100 miles before I add more gasoline. I basically ran out at 91. I pulled into a parking lot before I was stuck in the middle of the road during rush hour and then had my brother bring me some gas.
Air filter is fine
Plugs and wires are just a few months old
New fuel filter
Ran SeaFoam in the fuel tank within the last six months or so
I suspected my oxygen sensors were going up until recently because the car would bog down a bit right after any start up then hit the gas until I guess the oxygen sensors warmed up. It hasn't done this in awhile, so I never replaced them with some used ones I bought that have much fewer miles than my car has, which is 130K.
Anymore ideas?
Air filter is fine
Plugs and wires are just a few months old
New fuel filter
Ran SeaFoam in the fuel tank within the last six months or so
I suspected my oxygen sensors were going up until recently because the car would bog down a bit right after any start up then hit the gas until I guess the oxygen sensors warmed up. It hasn't done this in awhile, so I never replaced them with some used ones I bought that have much fewer miles than my car has, which is 130K.
Anymore ideas?
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the way your "estimating" mpg doesn't work, these gauges aren't accurate. fill it ALL the way up, drive a hundred miles, then fill it to the top again, then divide miles by gallons. estimating will get you nowhere, trust me, ive tried it
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I calculate my MPG the most simple way. Fill it to the top(untill the pump stops on its own). Drive it untill it is only about 1/8th of the tank full. Fill up. Then divide the miles you have put on since your last fill up(I just use the trip) by the gallons you filled up with this time, also untill the pump stops on its own.
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This happened to me starting a few months ago. I ran out of gas once, figured I miscalculated. Twice, knew something was up.
It was when the 10% ethanol was added to all our local gas. Turns out the Shell where I always got gas held out the longest before switching to E10.
I got about 18-20 less miles on a tank.
And the price went up
It was when the 10% ethanol was added to all our local gas. Turns out the Shell where I always got gas held out the longest before switching to E10.
I got about 18-20 less miles on a tank.
And the price went up
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This happened to me starting a few months ago. I ran out of gas once, figured I miscalculated. Twice, knew something was up.
It was when the 10% ethanol was added to all our local gas. Turns out the Shell where I always got gas held out the longest before switching to E10.
I got about 18-20 less miles on a tank.
And the price went up![MAD](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_mad.gif)
It was when the 10% ethanol was added to all our local gas. Turns out the Shell where I always got gas held out the longest before switching to E10.
I got about 18-20 less miles on a tank.
And the price went up
![MAD](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_mad.gif)
Other than that, tire pressure, fuel filter, air filter, spark plugs.....the normal tune up stuff.
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Yep, I noticed this too. I get worse gas mileage when I have to run the Ethanol mixed gas. I found a couple of stations around here that still have 100% gas and try to fill up there when I can. It's usually about a 0.20 cents more per gallon, but it is worth it. I can really tell a difference.
Other than that, tire pressure, fuel filter, air filter, spark plugs.....the normal tune up stuff.
Other than that, tire pressure, fuel filter, air filter, spark plugs.....the normal tune up stuff.
Also, you mean 0.20 dollars more per gallon? 0.20 cents more per gallon is not a lot. lol.