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 10:54 AM
2000 Chevy Silverado gas tank vaccum relief valve
STUART HUTCHISON
- MEMBER
- 3 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 12:27 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement
parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.