Originally Posted by 99SSEI
Hmm..is it under the PCM?
I appologize for the lack of knowledge, but what does a EVAP canister solenoid do?
yes if you remove the push pins for the PCM Box, you will see the round canister
The EVAP purge valve allows manifold vacuum to purge the canister. The Powertrain Control Module (PCM) supplies a ground to energize the EVAP purge valve (purge ON). The EVAP purge valve control is Pulse Width Modulated (PWM) or turned ON and OFF several times a second. The duty cycle (pulse width) is determined by engine operating conditions including load, throttle position, coolant temperature and ambient temperature. The duty cycle is calculated by the PCM and the output is commanded when the appropriate conditions have been met:
Engine coolant temperature above 25°C (77°F).
After the engine has been running about 2 1/2 minutes on a cold start or 30 seconds on a warm start.
The vehicle is operating in closed loop fuel control.
Canister purge commanded duty cycle varies according to operating conditions determined by mass air flow, fuel trim, and. intake air temperature. Canister purge will be disabled if TP angle increases to above 33%. Canister purge will be re-enabled when TP angle decreases below 29%.