LPG (propane) conversion

I would think when the coils are active the fuel pump and fuel injection should be active so that the engine can in fact start If you're missing one of those components you don't have an engine running generally speaking and with the factory repair manual wiring diagram which can be downloaded from other users here and what have you you should be able to find the wire that you can find that's got voltage when the car is ready in this case meaning it's ready to run it's on when it's time and the car computer say so the engine will start or attempt to start so that should take care of your signal that you need for the LP G ECU

 

You do realize that the LPG tank will have to be removed to get to the traction pack, when/if it fails again. You should keep that in mind and make it easily removable, meaning extra wiring harness connection/disconnections and gas cut-off valves.

Just a thought.....

 

So the deal with LPG conversion is the clean burn business not enhanced gas mileage or mileage or any of that?

 

It's slightly cheaper than gas, half the distance of an equivalent gallon of gas, and generally difficult to find a fueling station - unless his area has heavily subsidized it, so it's readily available in the area he frequently travels in. Almost forgot, loss of trunk space.
Since he's owned LPG cars, none of the above should be an issue for him...

 

How is that (LPG ecu) supposed to work? On a Gen2 Prius, the engine ECM will fire the injectors and coils only when the hybrid vehicle control ecu tells it to actually start the engine.

The engine will spin at 1000rpm when the car is EV only above 40mph (but doesn't fire the injectors or coils).

So the ECM and hvc ecu have to work together.

Posted via the PriusChat mobile app.

 

When I last had an LPG car, the tank was doughnut shaped and put in the spare wheel position. Worked well.