Poor Fuel Ecomomy

Hi,
  Looking for a little help/advice. 1995 Blazer 4X4 4.3L, 114,000 miles.
3.42 rear end gears. Recently purchased with 110,500 miles. Only
getting 13 to 14.5 mpg around town. I checked almost every tankful of
fuel( miles driven divided gallons used). It runs good now after all the
repairs I have made (See list below). Am i wrong to think it should be
getting better mpg's. I don't have a really heavy foot either. I did a
compression test before I bought it, All cyl's between 135 and 150 PSI.
It used about 1/2 qt. oil between its 3,000 mi. oil change. Never really
had it on the highway for more than 40 or 50 miles on a tankful to give
a accurate Hwy. figure. No DTC's set. Here's what I've done to it so far.
1) New plugs,wires,cap and rotor. All AC Delco
2) New air filter
3) New Fuel Pump (because it died)
4) New 195 degree t-stat (just because)
5) New Central MFI AC Delco (it was leaking)
6) New O2 sensor
7) New exhaust sys. from cat back (muffler rotten)
Thanks In Advance
Larry<!-- ~MESSAGE_AFTER~ -->

"Larry" <noones.DeleteThis@home.com> wrote in message
news:kC%sd.213672$R05.105161@attbi_s53...
 > Hi,
 > Looking for a little help/advice. 1995 Blazer 4X4 4.3L, 114,000 miles.
 > 3.42 rear end gears. Recently purchased with 110,500 miles. Only
 > getting 13 to 14.5 mpg around town. I checked almost every tankful of
 > fuel( miles driven divided gallons used). It runs good now after all the
 > repairs I have made (See list below). Am i wrong to think it should be
 > getting better mpg's. I don't have a really heavy foot either. I did a
 > compression test before I bought it, All cyl's between 135 and 150 PSI.
 > It used about 1/2 qt. oil between its 3,000 mi. oil change. Never really
 > had it on the highway for more than 40 or 50 miles on a tankful to give
 > a accurate Hwy. figure. No DTC's set. Here's what I've done to it so far.
 > 1) New plugs,wires,cap and rotor. All AC Delco
 > 2) New air filter
 > 3) New Fuel Pump (because it died)
 > 4) New 195 degree t-stat (just because)
 > 5) New Central MFI AC Delco (it was leaking)
 > 6) New O2 sensor
 > 7) New exhaust sys. from cat back (muffler rotten)
 > Thanks In Advance
 > Larry

That may not be out of line for winter driving, depending on where you
live, how heavy your traffic is, how long your trips are. If it is a cold
climate and you don't drive more than about four or five miles at a time,
the engine barely gets warmed up. If you drive 40 or 50 miles each time you
warm it up you might get up to 16 or 17 unless you have a lot of stop and go
traffic.<!-- ~MESSAGE_AFTER~ -->