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Baymu
Junior Alfisti
Joined: 25 July 2004
Location: United Kingdom
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| Posted: 27 October 2004 at 20:19 | IP Logged
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Right,
Just had the variator and all the belts etc done.
Diesel noise is now a distant memory, but there is still the 'turbo lag' sensation as the revs build to 3k.
Should I do an ecu reset?
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jeff_porter
Corleone
Runner-up best car & helpful member 06
Joined: 12 July 2004
Location: United Kingdom
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Posts: 4546
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| Posted: 27 October 2004 at 21:58 | IP Logged
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just curious, what car do u have?
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TPIACE
La famiglia
Voted best car 2004
Joined: 25 June 2003
Location: Australia
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| Posted: 28 October 2004 at 03:20 | IP Logged
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my car does the same Baymu now after a drivebelt/tensioner change and new thermostate/ECU recalibration, sometimes u can pick a percentage of throttle where as u approach 3k u actually feel the power step increase
i brought it up with my dealer after mentioning it here, and he said thats how the TS is spose to feel. Prior to this my car was running very rich at low rpm (300kms to a full tank!!!) so i didnt notice it as much
u can clean up the torque curve with a unichip or remap
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brid_dave
Senior Alfisti
Rup entertaining 06, Best Project 08
Joined: 04 June 2004
Location: Iraq
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| Posted: 28 October 2004 at 07:04 | IP Logged
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i do believe the turbo lag effect is caused because of the variator (reguardless of age)
the variator adjusts the timing making the car a more placid vehicle under 3K revs
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TPIACE
La famiglia
Voted best car 2004
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Location: Australia
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| Posted: 28 October 2004 at 09:54 | IP Logged
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there is a huge misconception that a faulty variator loses hp. This was another issue i brought up with my dealer. He told me he's driven Twin Sparks with very loud variators and theyve felt exactly like any other TS of similar age. The extra power or quicker response owners are feeling after replacing the variator is in fact due to the new cambelt and re-adjusted timing.
Edited by TPIACE on 28 October 2004 at 09:55
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Radone
Tourismo (guest)
Joined: 30 May 2003
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| Posted: 28 October 2004 at 11:12 | IP Logged
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I have the same problem (turbo lag). On Monday my variator will be changed and if the "lag effect" persists I'll try to change the MAF too.
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necstandards
Junior Alfisti
Joined: 22 April 2004
Location: Ireland
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| Posted: 28 October 2004 at 11:14 | IP Logged
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Can poor fuel consumption be directly related to a worn variator? Basically will I notice a difference if I replace the variator?
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TPIACE
La famiglia
Voted best car 2004
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Location: Australia
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| Posted: 28 October 2004 at 11:42 | IP Logged
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nope there are no side effects to a worn variator other than a rattling diesel noise when the car is on
my high fuel consumption was the result of a dodgy thermostat
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speedywinny
Tourismo (guest)
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| Posted: 28 October 2004 at 12:47 | IP Logged
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I've just had a std 36k miles belts replacement (2.0 TS)& commented to the dealer that it has more ooomph now (not that I was disappointed before).
He just muttered about the fact that belts do stretch & it must affect the timing to some small degree. I find this unlikely, but certainly she feels tighter, more responsive & more powerful now.
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CJ Romeo
Corleone
Fav/helpful member 05/07, runner-up 2006
Joined: 15 January 2004
Location: Scotland
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| Posted: 28 October 2004 at 14:45 | IP Logged
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brid_dave wrote:
i do believe the turbo lag effect is caused because of the variator (reguardless of age)
the variator adjusts the timing making the car a more placid vehicle under 3K revs |
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This is true.
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2008 Alfa Romeo 159 Ti
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lambo75
Membro Eccellente
Joined: 04 May 2004
Location: United Kingdom
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| Posted: 28 October 2004 at 14:47 | IP Logged
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CJ Romeo wrote:
brid_dave wrote:
i do believe the turbo lag effect is caused because of the variator (reguardless of age)
the variator adjusts the timing making the car a more placid vehicle under 3K revs |
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This is true. |
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I was under the impression the variator was there to help improve troque below 3000rpm 
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CJ Romeo
Corleone
Fav/helpful member 05/07, runner-up 2006
Joined: 15 January 2004
Location: Scotland
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| Posted: 28 October 2004 at 15:10 | IP Logged
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No it has 'normal' valve timing at low revs and advances it as the revs increase.
It does it by pumping oil into a chamber that forces a coarse thread out thus altering the relationship between the inlet camshaft and the pulley.
Rover's VVT system is kinda similar in concept but uses a slightly different mechanism.
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2008 Alfa Romeo 159 Ti
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Alfa Romeo forum : Technical (156)
Topic: New Variator In
