Jaguar S-Type 2.7D 2005 - Restricted performance

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Tue 7 Jun 2016 20:35
Jaguar S-Type 2.7D 2005 - Restricted performance - dermotmoy

restricted performance alert - car has reduced power - thought it might be air mass meter but no luck when this was replaced- am at a loss to know what it could be!

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Tue 7 Jun 2016 20:38
Jaguar S-Type 2.7D 2005 - Restricted performance - RobJP

First question : what made you think it was the MAF meter ?

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Tue 7 Jun 2016 20:42
Jaguar S-Type 2.7D 2005 - Restricted performance - phillip b

Is there any black smoke from the exhaust or any unusual noises?

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Wed 8 Jun 2016 13:07
Jaguar S-Type 2.7D 2005 - Restricted performance - dermotmoy

No black smoke, no unusual noises, just loss of power

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Wed 8 Jun 2016 13:04
Jaguar S-Type 2.7D 2005 - Restricted performance - dermotmoy

On dash warning it said gearbox fault. my machanic did a diagnostic test and it read AMM,which was replaced . This seemed to solve the problem and I had 2000mls trouble free.. The same loss of power has now returned with Dash Warning , "Restricted Performance". This time diagnostic reads Turbo fault. However when computer faults are cleared the car drives perfectly till engine turn off, then the fault returnes. Honest John suggests oil feeder pipes to and from Turbos {there are 2}. Will have these checked and let you know if problem sorted

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Tue 7 Jun 2016 20:47
Jaguar S-Type 2.7D 2005 - Restricted performance - hardway

Past experience with Jags always make me suspect the battery,

Even though it might seem fine.

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Wed 8 Jun 2016 13:11
Jaguar S-Type 2.7D 2005 - Restricted performance - dermotmoy

I have read that before on other forums but is not the case here

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