My Expedition acting like its out of gas????

I got mine from my cousin, the check engine light was on at that time he said to just get the plugs changed and that would take care of it, well to add to the problem the thing acts like its out of gas as i put on the gas, and it just sputters for a bit until i go a bit faster. it seems like its getting worse too.I did get the plugs changed ( not a misfire like i was told)
and still the same actions. what do i do? help!!!
I was told that it could be the computer what do u guys think?? thanks for any help!

and it just sputters for a bit until i go a bit faster

Sounds like a throttle position sensor to me.

Buy a code reader from E-bay for OBDII (cheaper there) and you may find that cylinder number 4 (Pass. side rear) is the problem. What happens is the hole where the spark plug goes gets filled with antifreeze from the heater hose above and saturates the boot from the coil to the spark plug causing the miss fire condition. Again, return to ebay and purchase a new Coil On Plug for your truck. I got mine off e-bay brand new in Motorcraft box for $35.00 inc. shipping, as part stores were $49-$59 and dealer was $110.00!! This a common problem and will see this talked about alot on the internet. Good luck!!

not just that one, could be any of them.

They will pull the codes for you for free at AutoZone. Just because the light is not on does not mean you don't have some stored codes in there. But, if it is intermittent CPU problems, the code that appears may not be the problem, just a symptom of the CPU dying. I'd start with the codes, though. Good luck with this one.

1999 Ford Expedition XLT 4.6L
2003 Volvo S80 2.9L

If the code reads "fuel too lean" could this be the problem regarding the coil?

my 2002 (just changed for a 2005 ) did the same thing 3 or 4 months ago....

It was the # 3 coil that was DEAD and it was replaced under warranty....

Good Luck

Slurp...