[T3] Temp sensor and MPS problems on new motor

[Keith Park]

Starters arent expensive, dirt cheap really...  $60 roughly.
Id be tempted to try a new one but these days, the rebuilds are often of
horrible quality with the wrong parts from totally different starters
bolted together.  Is it possible that there is still an electric motor
rebuild shop to be found in the city?
If Jim still rebuilds them Id go that route, or get one he's done.

I wouldnt be too critical about the AFR number spikes, Im not as familiar
with the pressure switches but they may not be too smooth in transitioning
the mixture to full rich, as long as its smooth running you are likely fine.
it wasnt until the late E systems that Bosch got the transitions smoothed
out and I think only the T3's got the E system pressure sensors.

Keith


Topnotch Restorations
topnotch at nycap.rr.com
http://www.a383ina68.addr.com/radiorest/main.htm
71 Squareback  "Hothe"
65 Notchback  "El Baja Rojo"
93 RX7  "Redstur"
87 Golf  "Winterat"
 

-----Original Message-----
From: type3-vwtype3.org [mailto:type3-vwtype3.org-bounces at lists.vwtype3.org]
On Behalf Of Jessica Chase
Sent: Monday, February 29, 2016 9:21 PM
To: type3-vwtype3.org at lists.vwtype3.org
Subject: Re: [T3] Temp sensor and MPS problems on new motor

Don't worry - we don't usually run it up to 40 in 2nd, but for the purposes
of this test (checking AFR numbers under hard acceleration), we pushed it.
With this new fully balanced motor with a lightened flywheel, it was pretty
easy to accelerate and keep on going. The motor didn't flinch.  The owner's
manual says that we can safely go up to 43mph in 2nd so maybe we were just
short of redlining it :) We've run performance Type 1 motors up to 5k rpm
and the Type 3 at 40 in 2nd sounded not even close. 

We have a gas mileage log in the glove box that goes back 4 years. Mileage
and fill ups are usually really regular (we drive the same route every week)
and last week gave an anomalous 14mpg from 4 days of driving which is why I
mentioned it. Surely, that's not good. But it's hard to keep experimenting
right now with the starter issue. We're only comfortable driving it together
so we can push start if necessary. Otherwise, it's just one of us needing
the car to start 2-3 times a day without incident. 
Relying on the kindness of strangers in The Bronx, Brooklyn, and Manhattan,
isn't always smart so solo driving isn't in the cards right now. As stupid
and gratuitously expensive a new starter might be, we're thinking of taking
the plunge. Remember, we don't have a garage to let the car sit in when
there's an issue. We have NYC streets and M/Th and T/Fri parking regulations
to think about. 

We didn't ground wire 18 when doing our "unplug" tests yesterday. Where
would be a good place to ground it to? What even is the true function of
that wire?

Driving-wise, the only complaint we have is leaning out not under WOT but on
the way up to WOT. With the AFR gauge installed we might see cruise #'s of
13-14 but acceleration #'s of 15-17 and then 12-14 when we assume the full
load switch kicks in. But yesterday without the load switch connected we
were richer under acceleration than with it connected! It's all kind of
dizzying and without a bunch of factory graphs and values to look at, it's
all rather vague!
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