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Black Beauty
Senior Alfisti
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| Posted: 10 July 2008 at 19:50 | IP Logged
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hope these pictures help you to understand the innards of a variator:
Edited by Black Beauty on 16 January 2009 at 19:55
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Black Beauty
Senior Alfisti
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| Posted: 10 July 2008 at 20:00 | IP Logged
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do youse need text also?
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156-2.5-V6
Senior Alfisti
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| Posted: 10 July 2008 at 20:39 | IP Logged
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Yus ya lazy bas 
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Black Beauty
Senior Alfisti
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| Posted: 10 July 2008 at 20:57 | IP Logged
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not applicable to v6'ers 
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kyriacosmetal
Junior Alfisti
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| Posted: 10 July 2008 at 20:58 | IP Logged
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was that a rattling one?
Can you understand where the rattling comes from?
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Alfa 156 1.6 Veloce 2001(Alfa Red)
-deconed+GTAMod
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-Zender Kit
-15mm wheel spacers
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Black Beauty
Senior Alfisti
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| Posted: 10 July 2008 at 21:03 | IP Logged
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yes it was, i reckon the rattle is from the spring inside the variator buckling/going soft from been constantly been compressed & wearing the internals of the variator & its washers too, se the last 3 pictures.
not sure how long the new unit will last or if its an upgraded version or just the same quality as the one removed.
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Black Beauty
Senior Alfisti
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| Posted: 12 July 2008 at 14:51 | IP Logged
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This is where the variator & its solenoid are located.
did a few test today.
The solenoid is activated by the ECU 'earthing' the solenoid.
One cable has a permanent 12 volts on it & the other cables goes 'low/to earth' when activated.... typically at 1800rpm & 'high' to deactivated at 4250rpm.
Strangely if you just start your car & rev it > 1800 is does not activate. I thought it was a temperature issue but even after the car had warmed up it would not activate. I had to drive the car 200m or so & then it activated ... i had a DMM from the Neg of the battery to the 'low' wire of the soelnoid. The DMM was sitting on the wiper as i drove in 1st gear
So once the 200m was clocked up I was able to stay parked & rev the engine seeing the solenoid activate as i increased the rev's past 1800rpm & deactivation at 4250rpms. from then up to 7200rpm the soelnoid remained deactivated... BIY once i lifted my foot the re-activated unitl 1800 rpms:
So conslusion:
In order for the variator solenoid to activate the car has to been seen to be travelling or have travelled for > 200 metres
* 800rpm to 1800rpm Variator Solenoid is Deactive
* 1800rpm to 4250rpm Variator Solenoid is Active
* 42500rpm to 7200rpm Variator Solenoid is Deactive
* 7200rpm to 1800 rpm Variator Solenoid is Active
Edited by Black Beauty on 16 January 2009 at 19:56
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Alfa-BR
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| Posted: 23 September 2008 at 07:08 | IP Logged
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BB, my garage sometimes repair the variator, they told me they use a set of washers to compensate the weak spring and change the washers for new ones. Have you tried that?
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156 2.0 TS 1999 remapped by AT & 145 TS 2.0 1996 remapped by PC
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Black Beauty
Senior Alfisti
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| Posted: 23 September 2008 at 10:01 | IP Logged
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nope, i just replaced the entire unit ..... i've only ever replaced one variator..so far.
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besterhc
Junior Alfisti
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| Posted: 14 March 2010 at 21:46 | IP Logged
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What happend to the pics,cannot open anny.
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156-2.5-V6
Senior Alfisti
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| Posted: 14 March 2010 at 22:03 | IP Logged
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BB banned - pics no more....
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Alfa-BR
Junior Alfisti
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| Posted: 16 March 2010 at 01:01 | IP Logged
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I could post those pics if you really want to see them.
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156 2.0 TS 1999 remapped by AT & 145 TS 2.0 1996 remapped by PC
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Alfa Romeo forum : Technical (156)
Topic: Variator Stripped down [ pic’s ] & tests
