Out of the blue crappy gas mileage.

[Bluemagic]

Ok as of late my gas mileage has been dreadful. Like 11.1 mpg bad. So I'm looking for some guidance with this issue and maybe it connects to my other issues I'm having as well. I drive a 99 GTP. I have new plugs new wires new air filter somewhat new fuel filter.

Usually I get like 14.7 in the city with is still crappy but it's the city so I amount it to that.

Around the time my torque converter starting acting funny this started happening as well. I unplugged the maf and it didn't seem better but I didn't keep it unplugged for long.

What else could it be? Also my fuel sender is bad. Is that the issue?

Also I'm starting to think my torque converter isn't bad because my motor is shifted lower on the passenger side because of a failed motor mount.

Any help will be greatly appreciated. Thanks guys.

 

[dsmuts]

Exhaust leaks? Which plugs did you use? Any mods?

 

[Bluemagic]

I'm thinking exhaust leak. Exhaust has been kinda raspy.

104 plugs and 3.4 pulley with supporting mods.

 

[dsmuts]

Headers?

 

[Fivefingerdeathpunch]

I would be looking at what the car is saying, as in sensors.

Though for some that is not always possible.

 

[Bluemagic]

Yea I'm thinking a sensor is bad. I have the torque app. So maybe I can do some type diagnostic. What should I look at?