Hey there guys im new to this site, my gf's car has the engine lite on, and the gas gauge does not work

when i turn on the car it goes to full, then goes to empy , today i replaced the fuel tank sending unit, and put in a diffrent gauge cluster to see if it changed anything and it dint

now i got an obd11 scanned and it gave me code p0449, soemthign about a evap cannister ? how do i fix this and where is it located ?

thanks for you'r helpguys!

 

Anyone know about the p0449 code guys ?

 

Take it to the dealer, or a reputable mechanic. I haven't had any experience with this.

 

Make sure gas cap good and tight

[IMG]local://upfiles/99/ADD7D0AAFD9B40F0860E48DFF33B0C82.jpg[/IMG]

 

Yeah gas cap is tight, and on

would this code affect the fuel gauge from working ?

 

first question

What year is your g/f's

Since you changed the sending unit in the tank check the lines and connectionsat the sender.
I dont think you said that the code was there before you changed the sender.

Here is some info I found

DTC P0449

Circuit Description

A battery positive is supplied to the evaporative emission (EVAP) canister vent solenoid valve. The control module

grounds the EVAP canister vent solenoid valve control circuit to close the valve by means of an internal switch

called a driver. The scan tool displays the commanded state of the EVAP canister vent solenoid valve as ON or

OFF. The control module monitors the status of the driver. If the control module detects an incorrect voltage for the

commanded state of the driver, this DTC sets.

 

wow all that really confused me..

its a 2001 monte carlo SS, and the car has always had this problem since she bough it...and i replaced the fuel tank sending unit, thinking it myght have something to do with that..but nope its still the same

can anyone tellme where thcanister is ? pics ? or how to get there ive beenn searching and found nothing, i have no idea what im looking for. The first think i wanna do is look where it is , and check that its all ok, notign broken or ripped and make sure everythignis fine..

 

I dont know where the canister is located at.
Maybe someone else can tell you.
On the canister is a sol. valve,
that valve most likely will need to be replaced.
It roughly costs around 20.00 bucks for it
If you go to autozone they have a free computer system that you can use. it will tell you where the cansiter is located

 

Guys here is a site for OBDII Codes

http://www.troublecodes.net/OBD2/

along with this one

http://www.obd-codes.com/

Hope that it helps you all out

 

The evap' cannister is attached to a bracket near the fuel tank. The purge valve is attached to the rear cylinder head near the coils. The vent valve is mounted near the fuel tank, also.
Check your fuses for the purge and vent valve, probably in the engine fuse panel under the hood.
PROBABLY what you have is a loose connection on a hose near the cannister or vent valve. HOWEVER, I had to replace a vent valve, get this, because I topped off the gas tank usually, and when you do this, it runs into the vent valve and cannister, and ROTS IT OUT! I NEVER top off the gas tank any more!
ALSO, your evap system has a federally mandated warranty of 50,000mi or 5 years, or it used to, according to my ref' book.

http://www.cardomain.com/ride/2319272