[T3] gas mileage, voltage, etc.

[Daniel Nohejl]

> I think you mean wire 19. That wire should not be a problem, since it 
> expects to get full unfused 12 V every time you start the car. A 
> weakness would have to be a brain input wire that connects to some 
> circuit that only expects to see tiny voltages/currents. That would 
> include most of the sensor wires.

I thought that 19 was the fuel pump ground though I’m not looking at a wiring diagram as I write this. Either way, I get the general meaning. 

> Keep in mind that all this is pure speculation. It's just as possible 
> that the problems are due to a broken solder connection or a marginal 
> component that tends to fail, or some kind of voltage spike that your 
> car's charging system is putting out. (But there is some level of 
> filtering for that kind of problem built into the brains.)

So should I just check the spark plugs for “fouling” before moving on to investigating “hard” FI components for issues?