My MPG. Epically blows. Its like 5.

I have a 99 ram 1500 5.9 V8

Small tires may help, the ones i have now are 305/70/r16

Any suggestions would help greatly.

Thanks!

 

how does the truck run?

 

runs great. just ****ty mpg lol

 

Have you tried a basic tuneup ?
Sounds like your plugs may be FUBAR, tho vehicles with messed up plugs typically don't run great.

 

i second this. change all fluids along with that and you should be gettin about 13 or so with bout 60:40 hwy:city

 

check your plenum gasket

check your cat and o2 sencor

check for death flash

and a tune up like everyone has said

 

Im changing oil and and plugs today. How do i check the plentum gasket and o2 sensor? Just take it and hook it up to a computer?

 

sounds like you should do a search!

 

yes do a serch, but look into the TB for oil. if there is the plenum is blown. The plenum is mounted to the bottom of the intake manifold, and thee are a few flaws with the design that allow oil to enter the manifold, and it can clog the CAT, ruin 02 sensors/plugs. mine was blown and didnt know it cuz it ran great, was getting 9-10 MPGS,

after doing plenum, intake mod, and others, i am nowgetting 13-14 city, and (NO JOKE) about 16-18 highway with my 95 5.9 SLT 4x4 with 195K

but the work thats been done to my truck in the past 20K miles has come to about $10K

 

What is the "tb"