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  #1  
Old 01-28-2011, 05:21 PM
lifted92ranger lifted92ranger is offline
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Default Terrible gas milage

Ok i drive a 92 ford ranger extended cab 4.0 v6 with new sparkplugs new wires and a new air filter, filter was put on at the end of summer along with the plugs and the wires probably a little over a month ago and a new exhaust which was put on in the summer of last year its 2 and a fourth pipe off the cats to a cherry bomb turbo muffler to 2 and half inch off the muffler to a 3 inch tip (sounds great). I have been averaging out my gas milage lately to check it and i have been gettin 8 miles to the gallon if im right thats beyond terrible and im getting tired of it i drive a v6 NOT a built up v8 but its sure feeling like it i would be alright with 15 miles per gallon now although thats not good at all but its a heck of alot better then what its getting now. Truck was getting around 15 at the end of the summer into the beginning of the winter. The truck is now getting 8 miles to the gallon. Brakes arent hanging up bad there not locking up or anything light has been coming on but is off now. It was the rear anti-lock that has been coming on but my brakes havent been smelling hot. I do go through brake fluid. Havent had the time or money to look at it or fix it right now. I dont think that it would hurt my gas milage that much. The tires are also only 255s so i dont have big tires and theres a lift but it shouldnt be hurting my gas milage all the sudden so im gettin tired of people tellin me its because its lifted. Im not stupid i know my trucks lifted and if the gas milage was 15 in the summer the lift isnt going to hurt it now. If anyone could help trust me it would be greatly appriciated. Also brother loved to sifen the gas out of my truck before so i have bought a locking gas cap thinking that it would help my milage sense he couldnt get into my tank. If you want to know something that pisses you off beyond belief have someone steal your gas all summer and have to put 20 bucks a week into the truck when you barely drive and when it was getting good gas milage.
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Old 01-29-2011, 02:55 PM
ranger4.0 ranger4.0 is offline
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Default Re: Terrible gas milage

checky for leaks before the o2 sensors like were the header joins into the down pipe. thats were mine leake and it causes the computer to think im running lean on the right side dumping more fuel into the right bank. i should be getting 15-16 but im gettin 11 if im lucky
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Old 01-30-2011, 06:13 PM
lifted92ranger lifted92ranger is offline
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Default Re: Terrible gas milage

Looked over the fuel lines like you said ranger4.0 down by where the manifolds meet where they enter the fuel filter and it wasnt wet and i didnt see any leaks coming from the filter. so still stuck if anyone has anymore ideas it would be greatly appriciated
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Old 01-30-2011, 06:39 PM
FireRanger FireRanger is offline
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Default Re: Terrible gas milage

He's talking about an exhaust leak, not a fuel leak.

How are you calculating your fuel mileage?
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Old 01-31-2011, 05:42 AM
lifted92ranger lifted92ranger is offline
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Default Re: Terrible gas milage

Theres not a leak when i start it theres no steam coming from anywhere where it shouldnt in my exhaust and i can see it its 20 degrees most mornings here in ohio in the mornings and i had it all looked at when i brought it into the shop for my new exhaust. And when i had exhaust leaks down the whole exhaust before my new exhaust it still got better gas milage. And the way im calculating it is taking the miles i get after i put gas in it divided by the amount of gallons i put into the truck.
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Old 01-31-2011, 07:36 AM
FireRanger FireRanger is offline
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Default Re: Terrible gas milage

Ok good. Just making sure you're calculating it the right way. Some people do it totally wrong and come up with MPG values that are either way too high or way too low.

Does the exhaust smell like gas, like it's running really rich. It's very odd for it to be using such an excessive amount of fuel and it to not be tripping trouble codes (check engine light) and smelling like gas.
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Old 01-31-2011, 02:34 PM
lifted92ranger lifted92ranger is offline
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Default Re: Terrible gas milage

Yes exhaust smells like gas like its running rich. But no havent had a check engine light come on (knock on wood). And truck still runs good but is sucking gas like crazy

----------

I have looked over the fuel lines and stuff but havent saw anything wet under the truck and its not dripping under the truck
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Old 01-31-2011, 02:53 PM
FireRanger FireRanger is offline
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Default Re: Terrible gas milage

Yeah it is probably not leaking.

It's odd that it would be running that rich without tripping something. So here are some basics to work on and see if anything makes a difference.

- Make sure the air filter is clean. I know you recently replaced it. Open the airbox and make sure it isn't plugged up.

- Clean the MAF. There's instructions on here somewhere, very easy. If it is messed up, it will not indicate the right CFM to the computer and therefore it will not be supplying the correct amount of fuel.

- Clean the throttle body. Instructions on here in the How-To section (by me). Not likely to fix it but we're already drawing at straws so why not.

- Look for vacuum leaks. If its sucking more air, it will detect a lean condition and ad more fuel. Unusual for this to not trip the CEL but again, drawing at straws. You can spray ether on the vacuum lines to see where it sucks it in and revs the idle up.

- Replace the fuel filter. Pretty easy with the right tools.

- Check the fuel pressure to make sure it is correct. I don't know how this would cause it to use too much fuel but wtf, it can't hurt.
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Old 02-01-2011, 09:10 AM
lifted92ranger lifted92ranger is offline
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Default Re: Terrible gas milage

Ok i will try those things one thing that i did that i dont know if it would hurt it i took the pipe off the bottom of my air box that ran behind my grill. I will make sure to clean the MAF im pretty sure its nasty. Thanks will let know soon if any of these things fix it hopefully they at least help it a little.
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Old 02-01-2011, 09:16 AM
FireRanger FireRanger is offline
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Default Re: Terrible gas milage

I'm not visually familair with that pipe on a '94 ranger, but it's unlikely to have anything to do with it. However, in doing that, you are probably hurting rather than helping performance. That is probably what lets your engine draw in fresh air, rather than hot under-hood air.
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How to: Aux light wiring, relays, & fuses
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Info: HID Projectors
How To: NO HEAT Troubleshooting Guide
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  #11  
Old 02-01-2011, 09:32 AM
lifted92ranger lifted92ranger is offline
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Default Re: Terrible gas milage

Its still open under the air box so its not like its only getting hot air but i do know what you mean when you say that. And the pipe was falling off anyways so it wasnt helping much.
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Old 02-01-2011, 04:12 PM
lifted92ranger lifted92ranger is offline
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Default Re: Terrible gas milage

Ok cleaned the MAF so we will see what happens. Put the end back on the air box also just to see what it will do. Hopefully it helps.
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Old 02-01-2011, 08:39 PM
braydon braydon is offline
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Default Re: Terrible gas milage

if cleaning the maf doesnt help id recommend replacing o2 sensors. im getting right around 8-9 mpg as we speak, and my o2 sensor needs replacing. I know how you feel, i put $20 in and can go like 50 miles.. i would live to get the factory 18 again, but i have no money to fix it at the moment.
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Old 02-03-2011, 10:02 AM
lifted92ranger lifted92ranger is offline
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Default Re: Terrible gas milage

Yea if it is the o2 sensors its not going to happen for a while there a little expesive although my brother works at the local auto parts store and can hopefully cut me a deal.
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  #15  
Old 02-06-2011, 12:21 PM
lifted92ranger lifted92ranger is offline
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Default Re: Terrible gas milage

Took out the old o2 sensor and found out that people need to learn how to work on vehicles because the bung for my o2 sensor to go into the threads are messed up on it so when i went to go put on the new o2 it wouldnt go in. As of right now the truck is running without one because i need to figure out a way to put the new o2 in because the bungs are not easy to change and wont be easy to fix so ill be burning the gas now truck sounds funny with a 18mm hole in the exhaust kind of defeats the whole point of the new exhaust.
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