Question about 2003 Jaguar S-Type

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Restricted Performance jerking while going up hill. 03 Sytpe

My S-Type Jag is jerking when going up hill and the Restricted Performance message is showing with an engine light - My boyfriend was pressing buttons in my car while parked to find the interior door lock button and these warnings just appeared.

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You would need fault codes

Posted on Jul 08, 2009

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I have 03 jaguar s-type with engine symbol and dash reads restricted performance


You need to go and have any fault codes diagnosed. The jag dealership is probably the best option.

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My Jag s type is giving me a reading that says RESTRICTED PERFORMANCE and it bogs and sputters at 2.5 - 3 RPM. What the heck is going on?


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Jan 13, 2011 | 2003 Jaguar S-Type

5 Answers

Jaguar s-type restricted performance


I had the same problem. Restricted performance and running rough at 3000 RPM. I have an OBDII code reader and found that the problem was in the air mass flow sensor, which is just after the air filter. I pulled this out and found it was dirty and had butterfly wings in it. The last shop where I had the oil changed replaced the filter for me but put in the wrong size. Close but no cigar. Bought some *** Flow Sensor cleaner at auto store and fixed the problem. Get an OBDII reader with the ability to erase the codes. Comes in real handy.

Oct 20, 2009 | 2003 Jaguar S-Type

1 Answer

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Restricted performace means the power has been cut for some reason, its probably safe to drive but needs to be serviced. Check your manual for possible causes of the light being on to determine your next course of action..

Aug 24, 2009 | 2004 Jaguar S Type

2 Answers

Restricted performance light come on,and car judders


Mine did same thing. Had it put on computor and it had to have a plug replaced and fuel filter was stopped completely up.

Aug 15, 2009 | 2003 Jaguar S-Type

1 Answer

Jag s type 05. restricted performance mess. appear intermittantly


Unfortunately many things can cause this. It may just be a faulty sensor or wiring plug/socket. The jaguar engine has many sensors all of which can cause this message. Best get the cars fault register read at a garage - this should show you where the problem may lay. The fact that the fault can disappear for long periods would indicate its something minor at the moment. for peace of mind get it checked.

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My mechanic said that the front cxygen sensors needed to be replaced on my 03.

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