Does your purge valve solenoid look like this?
First thing to try is pull the purge valve solenoid off and make sure the coil is not shorted. Should read something around 28 ohms across the two pins in solenoid.
Then put a piece of vacuum hose on one of the vacuum fittings and see if you can blow air through it.
With 12 volts applied to the solenoid the valve will open and you will be able to blow air through the vacuum fittings. Remove 12 volts and the valve should close and be airtight.
When the vacuum lines in the purge system get rotten small particles of dirt and rubber are being sucked into the purge valve solenoid blocking it open or clogging it. Sometimes a charcoaled canister can go bad and leak charcoal into the system.
Apply 12 volts to the solenoid and blow air through the vacuum fittings blowing out any dirt and rubber dust.
Stock 96 Regal 3800 II
Last edited by ron350; 01-18-2010 at 03:04 PM.