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Re: [T3] Apparently pressure sensors are important...


On 4 Feb 2003 at 0:04, Hugh Lawrence wrote:

> We switched them and got good results. The better working one is labeled:
> 311 906 051 B

The B PS was used with the A or B brains.

> The other is unlabeled.

They will all have at least one part # stamped into them, but you will probably 
have to wipe a lot of grease off to find them. All of them will have a 10 digit 
Bosch #, but only those sold thru VW will have the VW number.

> He informed me that the letter at the end of the code should match the one 
> on the ECU. The ECU is:
> 311 906 021 D

That's the ECU for a late 70-71.

> Are either of these the correct part for my (5/72) squareback?

No, A 72 would have an E brain and an E PS. It's possible that someone has 
changed everything out for 71 parts. The important thing is that you have a 
consistent set of parts. That includes the ECU, the PS, the distributor (and 
the temp switch for the cold start valve, if yours is still connected and you 
are in a cold climate.)

> What is the appropriate distributor for my car?

MT or AT?, '72 should have a larger vacuum can with 2 nipples on it: vacuum 
advance AND retard.  

> Can someone give me a URL that has this info?

Get a Bentley manual. It is the only manual that tells how to properly time 
this engine. It also has the distributor info for each year.  

Volkswagen Official Service Manual
Type 3 Fastback and Squareback 1968-1973
published by Robert Bentley, Cambridge, Mass, 1974
ISBN 0-8376-0057-X / LPV 997 383 / VSQU
(excellent book, complete and well written)

There's no better internet source for this info than this email list.

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


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