Lambda Control & Frequency Valve
 

1. Willl the frequency valve run even if the Lambda control unit is not working properly? My frequency valve does not vibrate even though there is power to the relay on the lambda control unit. I jumped the relay and the frequency valve does not vibrate.

Also I removed the control unit, opened it and cleaned it. I checked continuity on pin8 to the big transitor and it was ok.

2.What else can be tested on the control unit?

Please advice.http://forums.pelicanparts.com/uploa...1133986479.jpg