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Restricted performance. Xj sport 2003. Fixing my self

Customer Question
Restricted performance Mechanic's Assistant:...

Restricted performance

Mechanic's Assistant: What is the model/year of your Jaguar?

Xj sport 2003

Mechanic's Assistant: Are you fixing your XJ Sport yourself? What have you tried so far?

Fixing my self

Submitted: 8 months ago.Category: Jaguar
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Answered in 8 minutes by:
11/10/2017
Jaguar Mechanic: Richard, Jaguar Technician replied 8 months ago
Richard
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 15,768
Experience: 12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
Verified
Is the engine light also on?Other than the warning how does the engine run and drive?
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Customer reply replied 8 months ago
engine light is on runs and drives fine
Jaguar Mechanic: Richard, Jaguar Technician replied 8 months ago
Ok thanks.This is most likely a fault with one of the engine management sensors or circuits like mass air flow or a knock sensor as I see this.I recommend we check the battery and cable connections to make sure that they are clean and secure. Next we need to have the vehicle scanned for the stored fault codes. I recommend you try your local parts store to see if they have an OBD II scan tool we can use to read the fault codes. We should have it scanned before disconnecting the battery or any components.Let me know.
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Customer reply replied 8 months ago
I have code P1111, P0327, P1748, P1745, P0743, P0327
Customer reply replied 8 months ago
I will be fixing it my self
Jaguar Mechanic: Richard, Jaguar Technician replied 8 months ago

Ok we have a few different faults so I recommend we clear them all ad see which ones return. I see the P0327 is in there twice which is a knock sensor as we discussed. The knock sensors are under the intake but can be seen in between the intake runners. They are held down by a 13mm nut and the connectors are clipped to the thermostat housing so we should check those connectors first and if all is ok then replace the sensors. Also make sure we do not have any coolant that may be seeping in the engine vee on the sensors.

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Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 15,768
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