DDEC question

[Scarlett]

If the fuel pressure switch were to fail, what effect would that have on a DDEC system and the engine?

 

[cenger]

I had one of the fuel pressure switches on my 12v71's go bad while underway and it dumped fuel into the bilge. They are now something I replace regularly. Not sure what the impact would be to electronic control system but in my case the engine was still running.

 

[Scarlett]

On the non DDEC motors that switch only excites the alternator and runs the hour meter , no effect on the actual engine operation.

 

[kelpy]

You will immediately get an alarm at all stations. The engine will continue to operate normally.

 

[Hat52MY]

Concur on the hour meter and alternators. I had one go bad and I was able to operate the boat without issue. Simple to replace, I would suggest, if you replace one, replace both as the other is likely to fail. I also recommend a break free lubricant to help get the olds one out. Would not recommend applying any heat as they are tapped into the fuel sources.

www.translectricinc.com
Qty Item Description Price Extended Discounted Tax
2 76575-4* 4 Psi, N/O (Replaces M4006-4)* $13.02 $26.04 $26.04 $0.00

 

[kelpy]

The DDEC fuel pressure sensor does nothing else than talk to the computer about fuel pressure Hour meters are not necessary on DDEC controlled engines. The alternators are energized by some other method installed on the engine by the boat manufacturer.