using too much fuel ! please help

**rdodger** · #1 (**permalink**) 12-16-2010, 11:20 AM

I'm currently running my extreme street tune and normally get better milage out of a tank . its been snowing like crazy here and i put it 4x4 a couple times and was wondering if it can be stuck or something cuz i filled up again and only in 2wd it seems to be eating fuel . i checked for codes and none no other symptoms as far as i can tell . oh and i ran some diesel clean thru on the last tank as well as the one i'm on now . please help any info is great

**rdodger** · #2 (**permalink**) 12-16-2010, 11:22 AM

by the way the 4x4 light is off and it doesnt feel like its stuck cuz only the back tires spin when i tried to check in the snow

***MSGDAVE*** · #3 (**permalink**) 12-16-2010, 11:40 AM

do you still have the factory locking hubs? if you do reach inside your front wheel and try to turn the axle. Your hubs may still be locking in and you are pulling your front end.

**rdodger** · #4 (**permalink**) 12-16-2010, 11:44 AM

still have factory hubs . does the truck need to be started or anything to check the axle ?

**SuperCrutyPS** · #5 (**permalink**) 12-16-2010, 11:45 AM

After you disengage the 4WD, do you back up?

I've found a few times after I switch off the ESOF, the front end still binds on a hard turn. I back up about 5' and then go forward. Works okay after that.

Just a thought -

***MSGDAVE*** · #6 (**permalink**) 12-16-2010, 11:45 AM

No, make sure your hubs are on auto and vehicle off. Try to turn the axle, if it doesn't turn your hubs are locked in.

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