Fuel Enrichment Switch

Have you replaced the oxygen sensor assuming that this is a gas pwered vehicle? The switch is nothing special. Well at least on a Rabbit or Golf. You can find them at junkyards. But I do not own a Westi so I am just guessing.

air flow meter fuel pressure regulator temp sensor 2 Cat Converter

I'm running out of things that can go wrong. Any other suggestions?

Not sure of your engine nor do I know much about the Vanagons. I have way to much fuel in the exhaust of my 85 Vanagon. After reading the

Someone I respect menitoned this company for injector testing.

Before you do anything by way of replacement, have you run a couple of cans of Techron (or equal) through the system? The '87 Westie we sold recently had a similar problem on receipt that cleaned right up after the Techron treatment (it took two tanks). And it did then pass an honest PA Emissions Inspection. But to answer you questions: Yes, it would "hurt" if you ever run at full-throttle (such as up any hill steeper than 2%). And Yes, you can get such a switch, either from the dealer (with time), or from any of several after-market sources. I have found

But check that this is really the problem, and do make sure that the system is clean and otherwise running properly. Several have suggested you check your fuel-injectors... after and if Techron fails, start there.

Peter Wieck Wyncote, PA

I know you mentioned in an earlier post about replacing the fuel pressure regulator. Did you also check/replace the vaccuum lines as well that control it? A vacuum leak can mess it up too.

By the time you spend all that money on testing/cleaning the injectors, you could have bought new ones and replaced them yourself.

Testing is about $25 an injector. On my truck injectors are about $120 each. OK say $500 for a new set versus $100 to clean and inspect. I am I missing something in the math department? You are correct that some cars do have remanufactured injectors available for $50 each. I see busdepot has cleaned and tested injectors for $50 each.