Question about 2003 Jaguar S-Type
Restricted perfomance displayed and car will not rev above 3000 revs . Took it to local garage and ran diagnostic showed no problem
Its most likely the coils and spark plugs, sometimes caused by oil leaking from the valve cover gasket. The coils deteriorate over time from engine heat and need to be replaced at 90-100k
Local garages don't have the Jaguar diagnostics terminal and are unable to do more than find basic error codes with a reader. Its important to get this fixed because it's causing damage to your caltalytic converters. They are expensive.
Posted on Jun 28, 2009
A friend of mine had the same problem, and he found out that the problem was caused by trying to cut fuel costs by using regular unleaded gasoline instead of the required Super or Premium grade that is supposed to be used in the Jag. Once he filled it up again using Premium Unleaded the problem disappeared.
Posted on Jun 29, 2009
I have same issue with my range rover sport autobiography 2011 and the reason is the low quality gasoline . the warning is gone simply by fill with premium gasoline
Posted on Sep 19, 2014
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Posted on Jan 02, 2017
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