do ur homework. crownvic.net has saved my ass plenty of times........

 

should be 4.6L engine . Normal MPG is 17 city 25 Highway. Make sure it has a good tune up, Fuel filter change and drive it smooth and slow as it's a big car and uses more MPG than smaller vehicles

 

Check / replace plugs , air filter if needed . All depends on driving routine and conditions which can affect MPG .Only a small drop in original MPG you were getting which may be due to colder weather coming in and taking longer to warm . Short , stop / start trips will hammer fuel figures

 

It said my last post in here was deleted. Why?

 

No idea . Cant see any deleted posts listed which Mod / Admin should see with reason for doing so and be able to reinstate if we needed to do so .

 

Maybe I messed it up some how on my end. I've been known to do that

 

I am a 17 year old who got this car as a hand me down from my step-dad and when i got it i noticed that the mileage said 10.4 mpg which i already thought was unusual but slowly but sure the mileage has been dropping. I have not been driving crazy been driving the same way i have been since i got it 5 months ago and now the mileage is 9.8 mpg. Is there anything i can do?
[/QUOTE

Are you just looking at that dashboard readout? If YES, I would suggest filling it up, run till near empty, and calculate the mpg with the next fill up. And during that time keep track of what type of driving you are doing. Dave

 

There are quite a few issues to cover on a car like this.. As mentioned above, tune it. Also, clean the throttle body and perform a compression test. If the check engine light is on, correct the codes. A high mileage engine will tend to use more fuel.