Hi Aaron,

Did this behaviour start spontaneously or after something was changed?

Digifant FI is known to be sensitive to bad grounds. It also uses an
idle stabilizer circuit so the performance at idle is not really related
to performance at throttle.

Here's what we know: Steady idle indicates that plugs and wires, cap and
rotor are good. injectors are good.

What's left: Fuel pump, filter, OXS, coolant temp sensor, coil, AFM,
ECU, FI harness or grounds.

My first shot would be to look at fuel pressure, then the Oxygen Sensor
as Ben mentioned, and the harness grounds.

Happy Trails,

Greg Potts
Toronto, Ontario Canada
197x Westfakia "Bob the Tomato"
1987 Wolfsburg Weekender Hardtop
www.pottsfamily.ca

BUSES OF THE CORN - AUGUST 13-15th, 2010
www.busesofthecorn.ca

On 6/29/2010 3:46 PM, Aaron wrote:
> I am about to dive into troubleshooting a problem with my '87 westy. It =
> seems that after giving it more than 1/4 throttle while under load in =
> any gear, I lose all power. If I let off the gas pedal, it comes back to =
> life. However, I can rev it freely when it's in neutral, so it seems to =
> be associated with load. It also does this whether warm or cold. I'm not =
> sure where to start, but I figured I would start with the buzzing fuel =
> pump and go from there. It seems if it were a fueling issue, it would be =
> more of a sputter, not a sudden cut-out like it is.=20
>
>   It seems like there are so many routes one could take. What would you =
> do?
>
> Thanks!
> Aaron
> '87 Westy
>

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