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Re: [T3] Fuel Pump Question


On 7 Jun 2001, at 0:28, Ben Wampler wrote:

> No power, idles rough, have to pump the gas to get it to start with weak
> idle when cold, and doesn't like to start hot. And it occasionally bucks
> kinda bad when driving on the highway at a constant speed. Funky
> deisel-fuel-like smell from the engine when I downshift at speed or take my
> foot off the gas.

Check your battery voltage after a warmup drive, engine warm, 
medium RPM. As you give the engine gas, the voltage should ramp 
up to some maximum and will be regulated there. That voltage is 
the system regulating voltage which should be 14.1-14.4VDC.

If it is less than 13.5V, replace the voltage regulator with a genuine 
Bosch replacement.

Low system voltage will make the FI run rich, producing symptoms 
like yours.

-
Jim Adney
jadney@vwtype3.org
Madison, WI 53711-3054
USA

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