Question about 2000 Jaguar S-Type

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I have a 1999 s- type Jaguar with v 6 engine. Recently it has begun to develop a shudder or miss especially when under load on an uphill climb. Upon inspection I noticed that the engine oil level was below the minimum mark on the dip-stick. I added 1 litre of oil which returned the engine oil level to the top mark on the dipstick (full) The miss now seems to have disappeared. Could a low oil level account for the miss? At no point was an oil lamp or warning lamp or alert message displayed and temperature gauge stayed in the normal range.

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  • Jaguar Master
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No, and you were down a litre that wont matter, it sounds like a bad coil boot or coil thats arcing out on a load, i think this car has coils that go onto the plugs and the boots go bad, you can replace the boot on some cars without replacing the whole coil, you may want to tune up the car if its been a while and has over 70,000 miles,also if the engine was misfiring then the computer would pick up the misfire and store a code, this code which can be pulled with a scan tool, or most auto part stores will scan the computer and give you the code the code will tell you which cylinder is misfiring this way if it still misfires after the tuneup then you would need to replace the coil for that cylinder, heres a few diagrams showing the coil and theres one for every cylinder and then the boot which is sold speratly, hope this is helpful,I have a 1999 s- - johnjohn2_49.jpg

Posted on Jan 03, 2011

  • Anonymous Jan 03, 2011

    Many thanks for your help- will follow this line

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  • Master
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Hi

It is very unlikely the top up of oil has fixed the issue permently, If the car was loosing power I think you should have the EGR valve checked, these can have intermitent faults for months before seeing any ECU light or noteable power loss, chances are if it is the EGR then it will occur again.

These engines do need good oil pressure so the top up will have helped but for how long is another thing, most likley they are not related

Regards

Dan

Posted on Jan 03, 2011

  • Anonymous Jan 03, 2011

    Thanks Dan. What is the EGR valve. What does it do?

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  • Expert
  • 95 Answers

Being low on oil should have no effect on the miss while driving

Posted on Jan 03, 2011

  • Anonymous Jan 03, 2011

    Thanks for your opinion

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  • Jaguar Master
  • 22,326 Answers

No way was this the cause ,i think you disturbed a wire plug somewhere that had a dirty connection .Or you cleaned it at the same time ,jags only go wrong when not polished and seats treated to cream every so often

Posted on Jan 03, 2011

  • Anonymous Jan 03, 2011

    Thanks. Maybe I should clean the car!

  • Colin Stickland
    Colin Stickland Jan 04, 2011

    yes they do like to be poiished and nutured with loving care

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