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Old 04-02-2002, 12:19 AM
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cth350 cth350 is offline
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Join Date: Dec 2000
Location: Long Island, NY
Posts: 4,469
Make a visit to pep boys. Here's your shopping list...

- They'll have a half dozen sizes of vacuum line. All the rubber is replacable. You need two sizes of it. One for the pieces in the door, and one for the rubber to the distributor. About 2 feet of each will last you a lifetime.

- Pick up a hand held vacuum pump if you didn't get one already.

- An assortment pack of vacuum caps. Little rubber caps in a handful of colors & sizes to close off vacuum connections temporarily.

- Get a 5 pack of the blue bullet connectors. It's the right size for that temprature sensor. It's ugly, but for now it works just fine. The correct connectors are still available from anybody that can order benz parts directly.

- A pair of fuel line cut-offs. They are funny little C-clamps that will crimp the fuel line. They come in a handy two-pack.

- A fuel pressure guage that will read 32psi. It needs to be plumbed for 5/16" fuel line.

- If you fuel line rail hose is ugly or leaking, get 2 feet of fuel injection grade hose. It's about 4 times more expensive, but it's important to get the right stuff. Ideally, you want the euro hose with the braid on the outside, but that can wait. A leaky fuel hose under the hood can't.

The other thing you need is the EFI diagnostics info from the the 3.5/4.5 engine manual. THAT you won't get at pep boys, but if you email me directly and can handle a 2mb email attachment, I'll mail you a copy. It's the usual welcome-pack I send all the poor souls with a 4.5.

Your next course of action is to split your problem space in two. Which do you want to tackle first, the doors or the drivability? If you want to tackle the engine, cap off the vacuum line that runs to the body.

The D-jet system is very sensitive to vacuum. Most likely the vacuum line from the manifold to the manifold pressure sensor on the bulk head is shot. Replace it on general principles. It's 5/16". There is post someplace in the archives about reading the vacuum level at this sensor. You'll have to look it up, I don't remember the magic numbers involved.

-CTH
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