I have a copy of a TS Manual Supplement I got from England (EB Spares) dated Jan 1987. I also have downloaded Craig's TS Manual Supplement which is dated Dec 1987. The cover of the English manual says "75 Twin Spark 2.0" rather than "75 Twin Spark S". The "S" manual wiring diagram for "Ignition and Injection, Motronic 4.1" shows M15 as a "Fuel vapour solenoid valve", S10 as a "Landa sensor", S25 as a "Connector for self diagnosis" and S30 as a "Map switching device connector". There is no mention of M15, S10, S25 or S30 in the "2.0" manual but there is a G49 labeled "Connector available" where the S25 and S30 leads terminate.
Now just to make it interesting, I also have some pages copied form an Italian TS manual (not dated but the same basic engine as above). The FI/Ign/Motronic circuit diagrams and pictorals in it make no mention of an O2/Lamda sensor but the text contains a long description of what one does, how it works and how to test it. It also has several drawing of the sensor. Still, I have two engines which I got from Italy and neither of them have Lamda sensors or evaporative emissions control connectors in their wiring harnesses. They also lack leads in their wiring harnesses for those devices.
Apparently Alfa made two TS engines, one with emission controls and one without. It would have been nice if they'd badged them consistently but it seems they didn't. Oh well ....
Bruce Colby - Street = '69 1750 GTV/TS; Track = '65 SGT/TS, '89 E30, '72 914/6
gone to new homes
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- '71 Jr. Z, '69 1750 Spider, '62 Spider