Really bad Gas mileage on my Ranger

[Angel906]

I really need help guys, My 91 2.3 little ranger gives me around 13 mpg on city driving at normal conditions, 14´ original wheels, manual trans, also it jingles quite a lot when it gets to its operating temperature range

 

[alwaysFlOoReD]

One of the things that wears out is the O2 sensors. They have a life span of ~10 years or 100,000 miles. They control how much fuel is getting put into the engine.

 

[rusty ol ranger]

What do you mean by "jingles"?

Whens the last time it had plugs and wires?

If theres a check engine on id start by getting the codes read. Lots of sensors can affect fuel mileage.