Originally Posted by mach4 (Post 3257562)

I thought I would start a thread on a project to replace the engine driven vacuum pump on a 617 engine with an electrical pump.

There are a number of donor options and in doing the research on possibilities I created a list of possibilities.

2005-09 Audi A8 Quattro [8E0 927 317]
2004-06 VW Touareg [8E0 927 317]
2001-05 VW Passat [8E0 927 317]
1998-01 Audi A4/A6 [8E0 927 317]
1999-05 VW Jetta [1J0612181B and D]
1999-13 Volvo (most) [31317445]
1999-03 Saab 9-5 95 [46 46 220]
1994-99 Saab 9-3 900 9000 93 [46 46 220]
2011-12 Chevy Cruz [13343961] * (Pump appears ok, the problem is with a switch)

In an initial trip to the junk yard I found a VW pump but it was way too expensive. Today I found one for under $20 so I grabbed it. It came off a Passat. Here is what they look like.

http://www.peachparts.com/shopforum/...1&d=1387523554

I haven't ordered the vacuum switch yet but will shortly.

Right now I'm working on a design for a bracket and will get the pump mounted up before proceeding with the switch and relay.

The reason for the conversion is to eliminate the possibility for the engine driven pump to spill it's bearings and take the engine out.

There are at least two ways to control the pump. The first is with a controller. This is one that is used to control vacuum in a CNC machine environment.

http://www.peachparts.com/shopforum/...controller.jpg

It's $95 and is available on the BuildYourOwnCNC web site.

The other option is to use a switch and relay. I'm leaning toward this switch, which is available from EVParts

http://www.evparts.com/products/stre...250&height=300
Pictures and progress to come.

Originally Posted by Jooseppi Luna (Post 3257663)

Cool! Methinks I'll be following your lead soon... the VP in my 'SD has 211k on it, so I need to replace it anyway.

Originally Posted by JB3 (Post 3257694)

where is this mounted in the VW application? does it have a special mount to cut down on noise?

Originally Posted by Dan Stokes (Post 3257671)

Thanks for this post. I've been kicking this idea around but you have a prettier solution than I've come up with. I'll only need it for shut off in the S-10 but I want it to be fool proof (given my level of "fool" that'll be tough).

What is that switch used on? Is it something I can scrounge at PnP? And is the VW pump Diesel-only or do lots of Vdubs have them?

Originally Posted by Smoker (Post 3257767)

For shutdown I'd guess the saab (and many other euro gasser) cruise control assist vacuum pump would be fine.

If someone wants I can yank one off a parts car and measure the vac.

Originally Posted by funola (Post 3257789)

Thanks for posting this. I'll be following your progress. Does the car you took the vac pump from have a vac reservoir and vac switch? Have you looked into whether removing the cam driven vac pump will cause any issues with what drives it (the timing device)?