Re: diesel stop solenoid
The usual price-gouging from the ever-inventive Volvo. Same old story. Yea, an engine sold at a competitive price (otherwise it won't sell at all) but later they are waiting for you with these awful prices for spare parts.
Check that you are feeding 12V to the solenoid. Check with your multimeter. You should hear a "click" when you are feeding that to the solenoid. All it is is an electromagnet that when energised pushes (or pulls) against a spring and shuts off the fuel.
If it has failed, put a manual stop on it and tell Volvo to stuff their $435 electrical fuel shut-off solenoid up their collective rear.
What an utterly marvellous idea. Yea, a fuel shut off that needs electrical power, on a sailboat, in a seawater environment.
You have to have one for the starter motor, but no-where else.