Where do I find it
SOURCE: po446 evap vent code where is the evap vent
Some might have an ses p0446, evap emissions vent circuit low. If you
take it to the dealer they want 300-400.00 to fix the problem. GM has a
service bulletin on this condition and have the updated part for 180.00,
thats suppose to eliminate this issue.
Basically the problem is, the evap purge vent valve gets clogged with
dirt, especially if the truck is used in dirty conditions. Well I
figured there had to be a cheaper way to cure this problem.
Here it is:
1) find the location of the vent valve; its under the truck, locate the
charcoal canister on the front of the gas tank and trace the vent line
to the vent valve.
2) Take the bracket loose with a 5/8 wrench.
3) Spin the valve around so the side with the hole is facing you.
4) Take an air compressor and blow the vent valve out.
5) reinstall and clear the code and it's fixed.
Now I know the updated part from gm is supposed to keep the valve from
clogging ever again, but why spend the money when all you have to do is
blow out the vent valve every 50k-100kmi and save your $$$!
Subject: DTC P0446 (Restricted/Blocked EVAP Vent Path) Set, Service
Engine Soon (SES) Lamp Illuminated (Replace Hose/Evaporative Emission
(EVAP) Canister Vent Asm) #02-06-04-037A - (02/02/2005)
Models:
- 1999-2003 Chevrolet Silverado Models
- 1999-2003 GMC Sierra Models
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This bulletin is being revised to add model years. Please discard Corporate Bulletin Number 02-06-04-037 (Section 06 -- Engine/Propulsion
System).
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Condition
Some customers whose vehicles are operated in dusty type environments,
such as farming or mining off-road type applications, may comment about
the illumination of the instrument panel SES light, with a DTC of P0446
(Restricted/Blocked EVAP Vent Path) being set.
Cause
Dirt and dust intrusion into the EVAP canister vent hose assembly,
resulting in restricted air flow, may cause this condition.
Part Number 15086429 Hose Asm-Evap Emis Cnstr Vent
Removal & Installation
Purge
Solenoid Valve-2.2L (L61) Engine
To install:
Purge Solenoid Valve-2.4L Engines
To install:
NOTE
The EVAP canister may have released carbon particles, which caused
this part to fail, and may cause damage to other components. Check the
EVAP canister for loose carbon before returning the vehicle to service.
Vent Solenoid Valve-2.2L & 2.4L Engines
To install:
Hope this help (remember commetn and rated this).
SOURCE: How to replace the evap vent solenoid on a 2001
LOOK ON THE INTAKE MANIFOLD.THATS WHERE IT IS.
SOURCE: where is the camshaft position sensor(CPS) located
2002 Safari 4.3L engine, cam sensor, same as pick-up coil, sits in ignition distributor, will be the one with three wire connector, held on with two small bolt's in the distributor.
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