[T3] On my 73 square

[bobsnotch at aol.com]

That's the thing Jim, that "miss at idle" started him down this road of going thru everything. 
He's had a couple of threads about this on the Samba, chasing it. So far, the big consensus 
has been to adjust the MPS, so he can at least plug in the IAD sensor.
The miss has been bugging him since 2016 or maybe 2017, as he can't get rid of it. He 
ended up unplugging the IAD TS to help a running issue back then, after he got the correct 
MPS on the engine (had been running a "D" unit).
He originally blamed it on the 10% ethanol being added, but we know better. That's not it.
Bob


-----Original Message-----
From: Jim Adney <jadney at vwtype3.org>
To: type3 <type3 at vwtype3.org>
Sent: Sun, Sep 15, 2019 12:25 pm
Subject: Re: [T3] On my 73 square

On 14 Sep 2019 at 20:24, bobsnotch at aol.com wrote:

> However, I don't know IF adjusting the MPS will fix your "miss at idle"
> issue. 

That's the problem. In most cases, the pressure sensor is not the problem, 
and "adjusting" it just means that you've now lost the factory calibration. Yes, 
you can mess with it, and a lot of people do. SOME of those people really 
know what they're doing and do it with real understanding, but just adjusting 
one part, to make up for a problem you don't understand, is the gateway to 
chaos.  

Most people who do this end up either junking the car, installing carbs, or 
just running extremely rich and fouling the air.  

It's not an approach I would ever recommend.

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

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