If it does not work, the N/59 Module should detect an Emmissions fault and the CE will come on...they get full of gas dirt/ crap and can be cleaned w/WD-40 squirted into the suction port.

__________________
A Dalton

I took it out and cleaned it with WD-40 as suggested. I also hooked to to 12+ volts while it was out and it did work but with not much force. Once it was back in I stated the engine and waited until all the required conditions were met for it to activate, it never did. I then put a LED on the pins and confirmed the ECM is commanding the purge valve. I checked the codes and got nothing. Then I pulled the suction line to the valve and the valve stating pulsing, again not with much force. I am theorizing that the vacuum from the engine is to much for this weak valve to overcome and it cannot open. Although the valve technically works it is to weak to preform its function in the evap system.

When the evap system isn't functioning what happens to the fuel vapor in the charcoal canister?

__________________
'94 E320 with 272,000 miles. '92 500SEL 133,000 miles.
Mods to the '94: TomTom GPS in place of ash tray, Auto Dimming Mirror ,Memory seat, DEI 545T Auto lamps, DEI 530T Auto Up/Down Windows, DEI Remote Start, Motorola Bluetooth® Car Kit, Built in phone charger using factory phone wiring, RainTracker Rain sensing wiper, Keyless Entry, Ambient lighting of center storage compartment. Soon: factory heated seats, REST
Mercedes-Benz is my addiction of choice.
http://www.youtube.com/vanwiek

It becomes saturated...


Purge code on that chassis would be 21 Blinks , but it will only throw that code if the valve is open/shorted/or no command signal...it does not monitor the actual vac flow of the valve.

Which is why you don't show a code.

__________________
A Dalton

Should I replace the canister?

Thanks, that's what I was thinking.

__________________
'94 E320 with 272,000 miles. '92 500SEL 133,000 miles.
Mods to the '94: TomTom GPS in place of ash tray, Auto Dimming Mirror ,Memory seat, DEI 545T Auto lamps, DEI 530T Auto Up/Down Windows, DEI Remote Start, Motorola Bluetooth® Car Kit, Built in phone charger using factory phone wiring, RainTracker Rain sensing wiper, Keyless Entry, Ambient lighting of center storage compartment. Soon: factory heated seats, REST
Mercedes-Benz is my addiction of choice.
http://www.youtube.com/vanwiek