Deteriorating gas mileage

[bigwhite4door901]

Hey guy just wondering if y'all have any tips or tricks over the last year my gas mileage is slowly dwindling and now I'm only getting 10-11 hwy. plugs and wires are all relatively new and have cleaned MAF and replaced fuel filter. I'm also about to do O2 sensors this week anything else y'all can think of?

 

[Donkey Punch]

Tires at the right pressure. Lead foot? Have you changed your driving habits? Frequent short trips really kill your mpg.

 

[JennaBear]

Clean throttle body.

 

[bigwhite4door901]

Tires at the right pressure. Lead foot? Have you changed your driving habits? Frequent short trips really kill your mpg.

No short trips and I baby it as much as possible

---------- Post added at 10:19 AM ---------- Previous post was at 10:19 AM ----------

Clean throttle body.

Thanks Jenna ill try that

 

[blairian]

Clean, clean, clean as much as you can. Make sure you aren't throwing any codes. No short trips, check tire pressure, make sure you're using high quality fuel, check air filter, fuel filter etc. etc.

A lot of factors go into MPG.

Sent from my DROID RAZR HD using Tapatalk 2

 

[Screwd up 6]

How many miles are on yours? I know in both my jeep and my blazer, before the cat went out, the mileage dropped a rediculous amount.

 

[bigwhite4door901]

150k I'm thinking it could be cats bc I'm getting more floor board heat than I used to

 

[Screwd up 6]

When they get clogged its not a good thing thats for sure. I think you can have the cats tested at some places...I never did it on mine. I just replaced the jeep because I knew that is what it was, and the blazer was part of when I redid the exhaust.

I was told that the engine temp will get really high when a cat is clogged too..but only at freeway speeds. Idk how true this is....I just read it on the internet lol.

Id suggest you get the 02s tested or the cat before you just waste money guessing what is wrong and might not fix it.

 

[bigwhite4door901]

I have true dual exhaust with no X pipe someone told me this could be killing my gas mileage is this true?

 

[JennaBear]

Yes.

Sent from an ice cream sammich.