my cel came on today. so i took it to get it checked by machine for free at autozone and they said i was lean. so they turned my cel off. what does this mean how do i fix. also my scion has a wierd smell when the engines hot and i get out, not bad or ne thing but is this normal... thanks

 

lean? what engine mods have you done?

 

sounds like intake issue

 

What is the exact fault code they read? (Have seen others use non-Scion tC references which of course lead to an incorrect diagnosis.) Once you know the exact code you can research it in the Tech section here.

Also the wierd smell could be the sulfur-like odor given off by the catalytic converter in the exhaust manifold, this is not unusual.

 

stok now an i dunno the #

 

if your lean its your MAF more than likly, if not a messed up injector or vacuum leak would be the other options.

 

whats maf and if its any of those problems how can i fix it.. thanks

 

Maf is the sensor on the pipe of your intake.

 

maf is mass air flow sensor, and it is the little black box screwed into your intake, if thats thats the problem you need a new MAF. I highly doubt it is an injector, and for the leak you need to just have a mechanic check the car for leaks, but it is probably the MAF, it usually give is self away by affecting both banks of an engine at the same time, but since the scion is a 4 cyl only way to tell is to have it checked

 

ok well also tho i checked my mpg and im only gettin 21 mpg would the maf affect that.

 

yeah, it monitors how much air comes in

 

so shall i get a new one or go to the dealer to find out, which is kinda far, can autozone or advanced auto find out thanks

 

new MAF is fairly expensive, if your car is still under warranty, take it in, and whatever they find wrong will be under warranty.

take it to your dealership, tell them what code you found, they may want to test themselves, after that, they will perform a series to tests to determine the problem and fix it.

 

ill do that,l the only thing i hate bout dealerships is you have to call ahead and it takes 1-2 weeks for them to see your car..

 

dont call, just drive up say the car is running lean which is considered major problem and they should check it out pretty quick

 

alright ill try it thanks

 

if anything they should give you a loaner since it will be dangerous to drive a car running lean

 

just put some crack in the gas tank and gain 35whp

 

makes sense. ive heard of guys with old 502s putting cocaine in their carbeurator and gaining quite a lot. also something about putting some LSD in the rear. i dont know what that one does.

 

Yoo my man I never heard that in my life where did you hear that from lol