I have been trying to get answers for a while and no one has been able to help, if anyone here could give me some advice on what to do i would be really thankful.

First, what is the average miles an acura cl-s is suppose to run on a full tank of gas. Because my car runs around 150 for a full tank of gas, which i dont think thats normal. I have changed the oxygen sensor and air filter, what else is needed?
Seconed, after i shut my car off the fan that cools the engine down runs for about 15 min. Is that normal ??

Thank you

 

Check your thermostat.

I got nothin else.

 

fuel milage differs greatly with driving habits. by your mileage figures you are at approx 9-10 mpg. could be "normal" if you run wot constantly, tow a heavy trailer or your air filter is clogged. your fuel to air ratio is most likely far too rich .
if engine temps are high, fan will engage. does your temp gauge show above the fourth
dash? first check engine coolant level and coolant to water ratio (which should be 50/50)
low levels of coolant or less than 50/50 mix,malfunctioning coolant thermostat,wot runs, trailer towing all contribute to elevated operating temps

 

You should get approx 300 miles to a full tank (full to empty). As for the fan, my buddy had a 90' prelude that did the same thing but that's the only occurence that I've heard of. I don't think it's a big deal but take it in to acura and ask them to take a quick look at it, shouldn't cost you a thing to get seen. Avoid flooring it and/or racin around if you feel you're burning to much gas and drop a K&N air filter in it. You have a quick luxary car, you don't have to prove that to anyone, it is what it is... sit back and let them admire.

 

I get about 240-250mi to a full tank in the winter and 260-280mi in the summer.

I drive 50% spirited and 50% normal speeds.

Never got above the 300mi unless I took a long drive somewhere and did all highway.

 

150 miles.. uhmm go check ur cat, sometimes your cat clogs up and you lose fuel.. that is what happend to my friends car.