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Date:         Mon, 10 Apr 2006 19:36:57 -0400
Reply-To:     Jonathan Farrugia <jfarrugi@UMICH.EDU>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Jonathan Farrugia <jfarrugi@UMICH.EDU>
Subject:      Re: Mystery Loss of Power At Startup
Comments: To: Loren Busch <starwagen@GMAIL.COM>
In-Reply-To:  <86476e250604101618h649492bcqe0a06d61c2cfc12e@mail.gmail.com>
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed

i might suspect a worn out afm carbon track at the lower end near idle. if you have a known good spare try swapping it out.

jonathan

On Mon, 10 Apr 2006, Loren Busch wrote:

> Okay, got a mystery problem, looking for ideas as to what's going on. Vehicle > is a stock '90 Westy, stock 2.1L w/Digifant, automatic transmission. Work > just done: Set of rebuilt injectors installed, new Bilsteins in the front, > rear brakes inspected and adjusted, emergency brake adjusted. > > Runs fine at startup, cold. In just a minute or two, as warming up, and > then on, two things occur. First, when coming to a stop or starting from a > stop there is slight shudder to the van just as it stops moving, just as it > starts moving. It feels a lot like clutch chatter, but no clutch, it's an > automatic. But the big problem is no power when starting from a stop. Once > rolling, but accelerating very slowly, and the revs get to about 2k, > everything is great, runs fine, plenty of power. If I had a carburetor, I'd > say it was the accelerator pump, that's the way it feels. > > Checked the tranny fluid, all up to the marks. Oil okay. There was no sign > of this before the work, never had anything like it in four plus years of > driving this van. Has to be, in my mind, one of three things: Something in > the FI system got unplugged during the work, there is something wrong with > all four injectors (not likely) or, and this seems absurd, the rear brakes > are doing something weird after the adjustment, like hanging or dragging. > > Anyone recognize these symptoms? > > > -- > Loren Busch > "I ordered a feast in the hope that you would come." > "I came in the hope there would be a feast." > (From "Monument" by Lloyd Biggle Jr.) > > >


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