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On 20 Jun 2004 at 9:58, Mark S. Davis wrote: > I checked yesterday and found the hose is connected from the bottom of the > intake to what appears to be a diaphram with a switch connected that goes > back to the brain. I took the cover off the switch and there is an > adjustment to engage the switch. Do you know the proper operation of the > switch and how to test it? Also can I disable it by putting a jumper accross > the contacts going back to the brain? That's the 68-9 pressure switch, which is on the right side of the engine. It is almost certainly working fine, but you may want to make sure the hose is connected to it, too. The pressure SENSOR is on the LEFT side and is actually not mounted on the engine. It is hung from the underside of the "floor" and is connected to the engine by a hose that comes into the bottom of the intake air distributor from the left. Make sure that hose is in place. Then check your system voltage with the engine running at medium RPM. It should be above 13.5V. If it is not, you may need to replace your voltage regulator, but check here first to make sure you don't waste your money. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org