I have had my XB for about 4 months now. I've been averaging 32 mpg but recently, when i got my oil changed my oil filter came off as i drove away. The mechanic said he fixed the problem but since then the car hasn't driven the same. Maybe i'm just paranoid but these are the problems:
1. It is idleing at about 500 RPM. Seems really low.
2. I was getting an average of 340 miles on one tank. Now I average 310-320.
3. Most my miles are on the freeway and i usually go about 80 but now it seems that the engine is working too hard. The RPM's are the same, about 4000 but the sound is different.
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Re: A few questions
Hi, If you drove the car without the oil filter there is a big chance that you may have damage to the engine by runing whitout oil , If this keep geting whorse you should have your cranckshaft check by a good tech. GoodLuck.
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The most likely problem is that the gas you bought most recently was a "summer blend" designed to give you LESS MPG! That's because the companies want more profits, NOT better fuel economy, which would give those companies LESS profits instead of MORE profits!
the only true way to check fuel economy is to fill tank drive till 1/4 full do this 10 times taking your milage reading before each refill that will give you your average milage now if you live in a hilly area and your up and down all the time that will also throw all stuff out the window and in order to get what the manufacturer suggests vehicle will do for avg milage is to go at a steady 30mph on a very slight banked oval tack that is basically flat That is how manufacturers of vehicles get the milage a vehicle will go per gallon
And any car I have ever owned with a timing belt has shown a noticeable drop-off in MPG when the belt had some miles on it.
I would do what you have done but added (or at least eyeballed) the air filter.
If that didn't bring it back, the timing belt was next since it doesn't take hardly any stretching to throw off the valve timing and it is critical to performance and MPG.
Has there been any changes to your vehicle in the last few weeks that you can recall. Regular oil changes are a must. Also, check the air pressure in your tires every once in awhile. These two things are key to keeping your car running good and getting better gas mileage. Your tires will also last longer if they are at the propper PSI. Also, do you travel the same route every day or does it change. Highway driving and city driving have a big difference in the average fuel economy your vehicle is going to get.
well to me that is not very good mileage . have you had the vehicle long ? also did it get better mileage when it was newer ? how about plugs wires etc what has been changed and tuned up ? I would think it would get better than that alot of bigger pickups get that good or better.hows your driving habits ? Jerry
Thinks that help mpg.
Change air filter, engine needs oxygen.
If using air conditioner, try with it turned off?
Oil change helps if has not been done.
Air in the tires help with mpg.
Tune-up( spark plugs,etc.