2000 Chevy Silverado
Where is the vaccum relef valve located and how does it work
Where is the vaccum relef valve located and how does it work
Aug 4, 2010 at 5:54 PM
2000 Chevy Silverado gas tank vaccum relief valve
2000 CHEVROLET SILVERADO
STUART HUTCHISON
- MEMBER
- 3 POSTS
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RASMATAZ
- ✓ASE Certified Mechanic
- 75,992 POSTS
Disregard the vacuum relief valve and inspect and test Canister Purge Control Solenoid
The Canister Purge Control Solenoid (CPCS) allows fuel vapor to flow from carbon canister to the engine. Solenoid is normally closed and is pulse-width modulated by the PCM to precisely control vapor flow. PCM controls flow of fuel vapors based on coolant temperature. At temperatures greater than 113°F (45°C), purge control solenoid is open. Purge control solenoid is also opened if PCM detects extreme lean air/fuel mixture ratio conditions.
The Canister Purge Control Solenoid (CPCS) allows fuel vapor to flow from carbon canister to the engine. Solenoid is normally closed and is pulse-width modulated by the PCM to precisely control vapor flow. PCM controls flow of fuel vapors based on coolant temperature. At temperatures greater than 113°F (45°C), purge control solenoid is open. Purge control solenoid is also opened if PCM detects extreme lean air/fuel mixture ratio conditions.
Aug 4, 2010 at 7:27 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.