1991 S4 Automatic - any being broken? - Page 2 - Alfa Romeo Bulletin Board & Forums
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post #16 of 22 (permalink) Old 09-23-2018, 12:21 PM Thread Starter
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Kember, I think you can change it without raising the car. The sensor might be mounted under the dashboard

http://keyeper.pekidi.com//emaps?ima...884&height=898
Thanks Max, for the information and the diagram.

Even more convoluted! Great! It so kills my back working under there.

Peter

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post #17 of 22 (permalink) Old 09-23-2018, 12:42 PM
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Quote:
Originally Posted by Max Pershyn View Post
Kember, I think you can change it without raising the car. The sensor might be mounted under the dashboard

http://keyeper.pekidi.com//emaps?ima...884&height=898
that diagram of the speed sensor is for the manual cars. It also shows the auto box sensor (#7) but it is not behind the dash or under the hood as it might look from the diagram!

the auto box sensor is screwed directly into the autobox.
according to the workshop manual (to remove the speed sensor) you need to do quite a lot:
like removing front exhaust pipes, the prop central carrier bracket, the transmission carrier and then you can get to/undo the speed sensor
not sure why you'd have to remove the prop central carrier (unless maybe you need to lower the auto box onto a tranny support?)

(though there is probably/hopefully! a shortcut)
@Peter
shoot a pm off to anglospider (Nick) on the UK forum, he has done this before and even designed his own speed sensor for the auto.
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Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.

Last edited by spiderserie4; 09-23-2018 at 01:05 PM. Reason: add illustration
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post #18 of 22 (permalink) Old 09-24-2018, 12:35 AM Thread Starter
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Dom,

Thanks. I'll definitely speak to Nick first. I will need a clear stretch of clement weather then. Probably time to think of other things to do while I'm at it under there.

I'm off to Italy tomorrow and don't like the idea of driving through France with a defunct speedo given the current crack-down by the gendarmerie there. But I have my TomTom to act as a speedo, always supposing that the circuit it takes its power from doesn't go phut!

Incidentally, I have discovered that, as well as all those BMWs, Peugeots and Citroens of the 80s, the Maserati Biturbo automatics of the late 80s also had the 3 Speed ZF auto box used in the S4 if people are on the scavenge for bits. I am going to look at one close up shortly to see how closely it resembles the highly modified Alfa box. I'll measure it. If there is some commonality, that will be good news as Maserati does rather better, if expensive, after-care on its older models than AR's business model - i.e. non-existent.

An engineer who worked at Maserati in the era is a friend and neighbour of mine in Italy and I intend quizzing him on the box and whether any work was done on strengthening the internals to deal with the Maserati engine. Or indeed any work was done with Alfa on developing it - given the shared parts bins Italian manufacturers use, it is conceivable that the gearbox was breathed on by the same subcontractor. I'll report back.

Peter
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post #19 of 22 (permalink) Old 09-23-2019, 01:44 PM Thread Starter
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Just a quick update.

I'm afraid I've been delayed by illness, an operation and recuperation but I finally got the Maserati QP pulse generator fitted that I bought from David Askew, the Maserati specialist, last year.

The difference between the Alfa and Maserati units is only that the Alfa unit is threaded all the way and the Maserati unit only half way but both fit perfectly well.

So I can confirm that as a substitute for the unobtainable (except apparently as NOS) Alfa PN 60575205 (made by Veglia Borletti), the part from a 1997 Quattroporte and other Maseratis of a similar vintage (Ghibli II and Shamal) is the same (?Veglia Borletti 68 0517 - it is stamped 12v E8 VEGLIA).

The best news is that it only cost me 44 plus 20% VAT - so 44 pounds, post paid.

It has come to a pretty pass when Maserati spares are so much cheaper than Alfa parts!
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post #20 of 22 (permalink) Old 09-23-2019, 04:05 PM
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Just a quick update.

I'm afraid I've been delayed by illness, an operation and recuperation but I finally got the Maserati QP pulse generator fitted that I bought from David Askew, the Maserati specialist, last year.

The difference between the Alfa and Maserati units is only that the Alfa unit is threaded all the way and the Maserati unit only half way but both fit perfectly well.

So I can confirm that as a substitute for the unobtainable (except apparently as NOS) Alfa PN 60575205 (made by Veglia Borletti), the part from a 1997 Quattroporte and other Maseratis of a similar vintage (Ghibli II and Shamal) is the same (?Veglia Borletti 68 0517 - it is stamped 12v E8 VEGLIA).

The best news is that it only cost me 44 plus 20% VAT - so 44 pounds, post paid.

It has come to a pretty pass when Maserati spares are so much cheaper than Alfa parts!

Kember,

could you please share the source, I would like to purchase a sensor as well
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post #21 of 22 (permalink) Old 09-23-2019, 10:12 PM Thread Starter
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Kember,

could you please share the source, I would like to purchase a sensor as well
Max,

Sure. I should have been clearer. It was David Askew in the UK: David Askew's Maserati Parts Service Very efficient, helpful and knowledgeable Maserati breaker/specialist.

Peter

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post #22 of 22 (permalink) Old 09-24-2019, 12:28 AM
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thanks for getting back, Peter, and hope you are well on the road to recovery.

It is a useful tip for auto S4 owners.

so, just to recap, we have 4 part numbers worth searching that will work for the Spider S4 automatic speed sensor:
Alfa 60575205
Veglia (Borletti) 68 0517
Maserati 393650106
Ferrari 116987
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Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.
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