Service Engine Soon light... Code P0440
Login  | |
|
Service Engine Soon light... Code P0440 - 1/5/2007 7:26:22 PM
|
|
|
chevyrocksu
Posts: 17
Joined: 11/14/2006
Status: offline
|
Hello i have a 99 blazer 4 door and my service engine light came on, so i had run of my buddies run a scan tool on it and it said P0440 evap emissions control failure. I have no idea what that means... has any one had this code pop up before? thank you
|
|
|
|
|
|
|
RE: Service Engine Soon light... Code P0440 - 1/5/2007 7:29:21 PM
|
|
|
swartlkk
Posts: 14499
Joined: 5/1/2005
From: Waterloo, NY
Status: offline
|
This typically points to a improperly tightened gas cap, faulty gas cap, or over filled gas tank. Did you recently fill up with fuel? When you tighten your gas cap, do you tighten until you hear it click 3 or more times?
_____________________________
Kyle-
04 Rainier
My Restoration Projects
Please Do Not PM for Tech Help
|
|
|
|
|
RE: Service Engine Soon light... Code P0440 - 1/5/2007 7:31:52 PM
|
|
|
chevyrocksu
Posts: 17
Joined: 11/14/2006
Status: offline
|
I check the gas cap as soon as the light came on i had that happen b4... I have not filled up with gas for a while, but i noticed when that light came on it sure felt like i was using up more gas.
|
|
|
|
|
RE: Service Engine Soon light... Code P0440 - 1/5/2007 9:51:10 PM
|
|
|
20Blazer00
Posts: 862
Joined: 9/16/2005
Status: offline
|
The evaporative leak detection diagnostic strategy is based on applying a vacuum to the EVAP system and monitoring the vacuum decay rate. The VCM monitors the vacuum level via the fuel tank pressure sensor input. At an appropriate time, the EVAP purge solenoid and the EVAP vent solenoid turn ON, allowing the engine vacuum to draw a small vacuum on the entire evaporative emission system. If a sufficient vacuum level cannot be achieved, a large leak or an EVAP system malfunction is indicated. The following conditions can cause this problem:
A disconnected or malfunctioning fuel tank pressure sensor
A missing, malfunctioning, improperly installed, or loose fuel cap
A disconnected, damaged, pinched, or blocked EVAP purge line
A disconnected or damaged EVAP vent hose
A disconnected, damaged, pinched, or blocked fuel tank vapor line
A disconnected or malfunctioning EVAP purge solenoid
A disconnected or malfunctioning EVAP vent solenoid
An open ignition feed circuit to the EVAP vent or purge solenoid
A damaged EVAP canister
A leaking fuel sender assembly O-ring
A leaking fuel tank or fuel filler neck
Any of the above conditions can set a DTC P0440.
_____________________________
Mark
2000 Blazer LS 4dr 4.3L Auto
1999 Grand Am 3.4L 4dr SE2 - Traded
2000 Honda Odyssey 3.5L 5dr Mini-Van
|
|
|
|
|
RE: Service Engine Soon light... Code P0440 - 9/15/2007 4:18:17 PM
|
|
|
quinnman105
Posts: 601
Joined: 8/16/2007
Status: offline
|
Does anybody know how I can get the Purge/Vent Solenoid? Do you think this will help? This is the same Damn code I've been getting every time.
_____________________________
2001 Chevy Blazer
4x4, 4dr
4.3L Vortec V6
|
|
|
|
|
RE: Service Engine Soon light... Code P0440 - 9/15/2007 6:35:55 PM
|
|
|
swartlkk
Posts: 14499
Joined: 5/1/2005
From: Waterloo, NY
Status: offline
|
The vent/purge solenoid is available at your favorite autoparts store. The location depends on whether you have a 2dr or a 4dr. I can't remember the exact location of the 2dr vent/purge solenoid, but on a 4dr, just drop the spare tire if you have it underneith and it'll be in the middle of the crossmember directly behind the rear axle. It'll have one large vacuum line and an electrical connector.
_____________________________
Kyle-
04 Rainier
My Restoration Projects
Please Do Not PM for Tech Help
|
|
|
|
|
RE: Service Engine Soon light... Code P0440 - 9/15/2007 7:02:42 PM
|
|
|
quinnman105
Posts: 601
Joined: 8/16/2007
Status: offline
|
Kyle,
I went to Autozone, Pepboys and Advanced Auto. None of them had them in stock. Not sure if they need to special order it.
_____________________________
2001 Chevy Blazer
4x4, 4dr
4.3L Vortec V6
|
|
|
|
|
Printable Version
