Need help with my mpg

4

4runneracerunner

New member
So iv been messing with a few things on my 95 4Runner and it sucks gas and I know the mpg isn't suppose to the best or nor the worst but I know it should be getting around 16 to 18 mpg but mine Is getting around 8 if even that, getting around 90 to 105 per tank, and it's very annoying I have to fill her up twice to four times a week, and it's on my nervous and I don't want to get rid of it, I love toyotas and I love my 4Runner iv been threw hell and back with her and put so much into her and I just want her running great like she did.

Iv replaced the fuel filter and the air filter and upper intake manfoild gasket and the cold start injector and the egr sensor and the O2 sensors and the tps and all the belts, and did the timming right and the water pump and the cold start injector switch and collect temp switch and did a tune up and made sure there was no exhuast leaks.

I'm leaning maybe it could be a bad adjusted vavle? Or maybe injector? That's what I'm leaning towards, it's my daily driver til I can afford a bigger truck but for right now the gas money it is making it a slow process and it's gets very annoying, anyone else has any of idea?
 
Register to hide this ad
You mentioned a tune up...how thorough of a tune up? plugs n wires? How about tire pressure? Then check your brake drag, jack up each tire at a time and see if it free spins and does it stop quickly when you stop spinning it? Do you have automatic locking hubs? ( If you have 4wd ) I ask cause i'm thinking of switching my hubs to manual hubs in hopes to save some wear and perhaps give me better gas mileage.

Sending your injectors off to be cleaned and tested would surely be $$ well spent, IMO.
 
A full tune up, plug wires, cap and rotor and and yes it's a 4wd and its a auto and no I don't have locking hubs, and I will check the wheel drag and the tire is prefect at 35
 
I live in San deigo and I live around 20 miles alway from the beach and when I drive down to the beach and back I have about a little over haft a tank with 45 miles on milage counter
 
When I first got my 85 4runner I was getting 14/15 mpg. After some maintenance wires, plugs, air filter, rotor, and distributor same mileage. I also ran Techron, Lucas gas treatment, and HEET through gas tank a few times to clean up tank and potential water issues in tank.

But, Adjusting the valves got more power and now on average 18 mpg. They were very tight.

While researching how to improve mileage the only thing I came across prior to making my improvement was brake drag. I did not have the problem but it was one thing out there...
 
How many miles on the vehicle?
What's the compression of each cylinder?
How big and floaty are your tires?
 
Pull the plugs and see if you're running any too rich. If so, probably a leaking injector.

You could also have an issue with the AFM or TPS. Either of those affect the fuel/air mixture in open loop mode.

There's also various little things that can affect the effiency of the drive train. Auto tranny having issues, fluid viscosity or drag in front and rear differentials, brake dragging somewhere, heavy, bigger wheels/tires. Don't forget, you could just be leaking gas out somewhere.

good luck
 
im surprised nobody has said it yet..

driving style. it is the biggest factor in poor fuel mileage.
if your screen name means anything, I would start there first...
 
My check engine came on today after work and it was code 24 " intake air temp, sensor circuit" anyone know how fix that or if this has a problem with bad mpg?
 
You must log in or register to reply here.

Members online

Total: 260 (members: 4, guests: 256)

Forum statistics

Threads
278,309
Messages
3,554,070
Members
248,016
Latest member
Advally Service

Share this page

Trending content

Back
Top