[T3] Bad day at the (FI) office

[Jim Adney]

On 21 Mar 2016 at 19:03, Daniel Nohejl wrote:

> We´ve now got close to 50 miles on the new ECU and the issues of last
> week haven´t returned. How about this though? Since installing this
> ECU, we seem to be running even richer (by the AFR gauge) and the
> fully warm idle sounds to be around 1100-1200 rpm. It doesn´t seem to
> come down to what I previously had it set to. I can reset th? idle to
> spec and see what happens, but I thought this was an interesting
> phe?omenon. Plus, we still have to address the rich running. 15 mpg
> isnTMt good by any measure ITMm aware of but what to do about that? I
> should perhaps add that we have a 100© resistor in?ine with TS2 at the
> head fi that matters. 

Have you tried setting the pressure sensor adjusting screw back to 
where I calibrated it? That's where I'd start. I'd also take out the 
resistor, since that's telling the brain that you're not fully warmed 
up, so it will richen the mixture.

> Also  yesterday I noticed the speedo needle has started slightly
> vibrating between 30 and 50 mph. Between 40 and 50 it ticks loudly as
> well. I haven´t had much chance to go above 50 so I don´t know what
> the needle does there. This vibrating and ticking wasn´t around when I
> drove last Monday or on Saturday. I noticed it yesterday and today.
> Sean kindly helped us install a new cable two Saturdays ago as we seem
> to be incapable of correct installation¦.this is now our 3rd or
> 4th?cable in 4 years.

A speedo cable needs to be "adjusted" when you install it. There 
should be no extra loops or excess length in the cable. Was it your 
photo I recall that showed a large loop of speedo cable dropping down 
under the dash? That just means that someone has sold you the wrong 
cable. Frankly, I don't know if the right cable is still available 
anywhere, but I might have a good used one. They generally last 
forever.

To put one in, do the full physical install first: both ends, 
including the circlip or cotter pin at the wheel. Reach inside the 
wheel and push the housing in as far as it will go. Then pull it out 
as far as it will go. Then slip it halfway back in.  

In other words, install it in the middle of its free play.

If it still squeals, send the speedo to me to work over. You can use 
a small screwdriver to spin the speedo to see if it has any tight 
spots. It should feel completely free, with no drag at all.

-- 
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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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