for the last 2 days here in colorado it has been dumping with snow. and is pretty cold. but i am getting horrible mpgs, i know it will go down because of the cold but it never has this much. i usually get 60 miles out of quater of a tank, and right now i only got 30. is this normal or do i have a bigger problem?

 

Truck, 4Runner, 22RE, 3VZE?

At any rate, 120 miles to the tank is really bad.

 

Dude I have had many yota's and if u got some fat meats on ur wheel ur gunna get bad mileage, idk wat to say about the cold but wudnt the cold air improve ur mileage example cold air intake but I really dont know sorry

 

i have a 95 4runner sr5 v6 auto. with just the stock 31 inch tires. idk whats goin on? could it be possible i just got some bad fuel?

 

Hmmm I wish I knew man, but ur so lucky u live in colo, it's a 1000x better there than here in always sunny and hot San deigo

 

Dude I live in Colorado too... My Mpgs have not been that bad...

Get a K&N drop in Air filter keep it clean.
check your plugs and wires
Air Presure in the tires.
Drive like a grandma.

I get22+Hwy on 31X10.5 tires
18city

 

Driving on snow covered roads will lower the millage so will driving in 4wd. I would think that this time of year the snow is wet and heavy too, that will lower it more. You are also driving at a lower speed and that will also make the millage look worse.

 

And don't forget to take into consideration, our gas mileage isn't all that great with the auto tranny. My previous truck, a '91 3.0, with a 5 spd tranny at 70mph was getting me 23-25mpg. My current BEAST is a '91 4Runner 3.0, with the auto tranny and I'm getting 'bout 15mpg driving speed limit here in Wa.

 

ya all that is true. but a drop from the 14 i was getting to about 7 or 8 is just pissing me off ha ha.

 

lol well I get about 15 now. And it hasn't started snowing yet. check all wires and your air filter to like said above.... Also you might have a clogged fuel filter to. And it could be a possibility of bad gas to. Casey's gas always makes my truck run like crap. E-85 also makes it run crappy to.

 

ya im going to check everything in the morning and try to find the problem. hopefully it is something small and not expensive

 

I live in Boulder area and my milage has not been great the last few days, but consider that I have been letting the engine idle a lot to stay warm and have been running in 4wd most of the time, it hasn't been too bad. In deep snow and running 4wd it is not uncommon to drop 30%

 

One more thing to remember is Gas stations will be switching over to winter blend gas any time now. I get about 1-2MPH worse millage on that in the same conditions. Not sure if you have Winter blend gas down in the US or not though. I also see about a 30-40% drop in millage when the snow hits the ground in any quantity.

 

my v6 auto 4wd x-cab on 31s with 4.88s nets me 14.3mpg combined average.

 

Ive got a 87 toyota pickup 4x4 3 inch lift and 34 swampers and im gettin about 14 to the gallon. So something is up. Change the PCV Valve, its only like five bucks but it improved mine by 3 miles or so because mine was clogged up. Other then that, Fuel filter, Air filter, check the cheap things. And try not to run it in four wheel, that makes mine drop a whole lot. Good luck.

 

can i just go to napa for a PCV valve?

 

Well you're running a totally different engine, transmission and tires than this guy. A 4Runner with the 3VZE and an Auto on stock tires is lucky to get 16 MPG driving on dry roads in 2WD. The PVC on a 3VZE is a pain in the a** to get to. A bad PVC isn't gonna cut your mileage in half.

I have to assume you have been running in 4WD with all the snow you guys are getting, that's the issue. Probably nothing wrong with your truck, you have just been turning a whole second drivetrain lately.

 

How's your thermostat? Stuck open maybe? Maybe rated lower than stock 190F?
If the engine doesn't reach normal temps, mileage will suffer due to the ECU staying in open loop.

 

i have drivin in 4x4 before tho and it hasn't cut my mileage in half?