Re: So... my Audi just went dead...

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <5FC2EBC4BB4FD111B0A700805FE66794126B3F@ESELINT100.ericsson.se> =?iso-8859-1?Q?Tomas_Gardstr=F6m_=28ECS=29?= writes:

> My next approach was to remove the air duct and check the air flow sensor
> plate in the air cone. As this was the first time I checked this out ("Do> n't
> fix it if it ain't broke" philosophy) there were some dirt in there and I
> wiped it clean and centralised the sensor plate as described in the Hayne> s
> manual (I don't have a Bentley, and I have never seen one here in Sweden).
> When raising and lowering the air sensor plate, I felt some resistance in
> the upward movement. I had to take a firm grip of the nut to raise the pl> ate
> without slipping. The plate could be moved downward easily, but the plate
> didn't come to the proper rest position every time. What gives? Is the
> control plunger in the fuel distributor sticking? The Haynes manual state> s
> "If the sensor plate ... has a strong resistance to upward movement, the
> control plunger is sticking". What is "strong" in this sentence? Shall th> e
> resistance in upward and downward movement be approximately the same?

> Assuming the problem is that the control plunger is sticking, any BTDT:s?

Doesn't sound like it is.  At normal residual pressure, the plate
should be about impossible to move using just fingers on the centre
bolt.  A few people can do it, most can't.  With a pair of pliers, you
should feel about 1mm or a little more of free play, then the plunger
pressure.  The plate should _always_ come to rest in the same position -
if it doesn't, it's usually catching on the walls.

I'd be more inclined to suspect ground connections to the engine first.

--
 Phil Payne
 Phone: 0385 302803   Fax: 01536 723021
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