91 22re did a complete tune up rotor button,plugs wires dist cap o2 sensor cleaned throttle body but still only getting 13.5 mpg all highway driving at about 60 to 70 mph any ideas what else I can do love my truck but it is burning my wallet up!!!

 

Are you getting accurate odometer mileage readings? You can check the odometer against a known distance like the mileage marks on a freeway.

So, what the history on the 13.5 mpg? Sudden drop from something higher?

 

Any codes? Presumably, something obvious like a stuck injector or wacky VAF would throw one.

You might consider a lighter foot. I drive about 61mph on the fwy; I've found that increasing to about 65mph results in a 10% lower mpg. Slowing down isn't for everyone, but it does work.

 

I've had the truck about 14 months now and I got about 13mpg when I got it so no real change since I've had it. It does have 31x10.50x15 but I havent checked it with real know distance.thanks

 

Check your timing.

Compare your speedo to a GPS or GPS like phone app.

 

Weight how much extra stuff are you dragging around ??

What tire pressure ??Lower pressure lower mileage to a point

What type of tread the more aggressive the lower mileage .

I never drive any of my 22rec engines except Celica`s on the interstate just not enough engine