I am looking for suggestions on improving my 1990 Volvo 740's fuel economy. I heard that replacing my fuel filter will help. Are there any other ways to improve my cars fuel economy? Looking forward to hearing from someone soon.
If you don't mind your ride being a tad firmer, you can raise your tire pressures, assuming you haven't already done so. Just don't go nutso and put TOO much air in them or you'll get what they call "crowning", which is where you end up wearing down only the center portion of the tread rather than the portions to the left and right of center. (Not good. You want even wear.) You wouldn't know you were messing up your tread (which is ultimately your contact patch with the road, not something you want messed up!) until after many, many miles. If you can stomach the firm ride, do so, but I don't suppose I'd inflate them any higher than the laden (with-load) pressures in your manual!
Also, do you drive around with a ton of crap in your trunk? Empty it out. Less weight will help, too, even if only infinitesimally. The rule-of-thumb in the industry is that you get roughly 2/10 mpg for about 100 or 125 pounds, so if you've got a lot of stuff in your trunk, there's a couple tenths for ya!
Try the higher pressures for a couple tanks of gas and see what fuel economy you get these next few tanks. I'm curious. Report back someday... Happy motoring.
[This message has been edited by Lisa62 (edited 07-13-2002).]
Thanks for the tips Lisa, I appreciate it. I try to keep the tires inflated to the correct pressure. I definately would be able to stomach a harder ride, between the 120,000 mile old suspension and Houston roads, that would be nothing.
Now it just so happens that I cleaned out my trunk in the very recent past. I don't believe I cleared one hundred pounds, maybe fifty pounds at best but I have I hopes for this tank of gas. Right now I have been getting about 215 miles per tank. I thought my car had a 17 gallon tank but every time I fill up the pump autostops at 12.5 gallons.
Anyway I appreciate the response and will keep you posted about any improvements.
My 240 gas tank is listed at 15.8 gallons, but I've never got more than 13.1 at the pump. I usually run to the bottom of the red section and put in 12+ gallons. I guess they really didn't want you running out of gas on the snowy back roads of Sweden.
With an auto trans and mostly short distance city driving, you should be in the mid/low 20s. Use the A/C a lot and it will be lower.