2nd Gen Non-Engine/Transmission Poor Mileage

[BMote]

My 01 has been giving me only 11mpg lately, down from normal 18-20. I run straight pipe, no loss of power, seems to be up to temp (180). Any thoughts of cause?











01 w250 dodge4x4,reg cab long box. step cap, 4"lift, straight pipe exhaust

 

[JFaughn]

go into user control pannel and fill in , I think its signature, info about truck ,yr. -mod -equip. so everybody can help easyer, I'll make a couple guess's , fuel fuelfilter , maybe lift pump or exhaust restriction , get off the ground and check that everything rolls , brakes grabing , bearings after those it may be a deeper problum, I like to always check the basics first and hope for a cheeper fix,good luck.

 

[biggy238]

No loss of power doesn't sound right. Sure it wasn't bad fuel? If it's something with the truck, I would think you would feel it. Check the filters and brakes. I had one of my fronts lock with no noticable drag. Lathed my front rotor into dust.

 

[Graphic man]

it sounds like a MAP sensor.

lots of people have a map go bad with no codes

and you will lose power and MPG

 

[jeepit]

Where is it? How do you check it?

 

[Graphic man]

The MAP sensor is on the drivers side close to the top at the rear of the motor with one plug in the center of it, i think you need about 1-1/4" -1-1/2" socket to remove it.



there is not really a way to check it it!

it's just as easy to replace it

but it will give you poor MPG and power

 

[Todd T]

while you're at it go next door to the map sensor and pull the AIT and clean it.

 

[BMote]

gone over all brakes-wheels. . nothing dragging. Lift pump pressure 13lbs both sides of filter,

 

[David Wheeler]

Now for thew million dollar question..... have you possibly changed where you are buying your fuel lately? I accidently bought premium fuel one day and my mileage shot through the roof (compared to my regularly pumped stuff). Good luck!