2003 Jaguar S-Type Logo
Jess Orozco Posted on Dec 21, 2014
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Currently have a Jaguar 2003 S Type. I changed all the spark plugs, gaskets, all 4 H2O sensors, PCV, Mass Air Flow Sensor, and Throttle Body; but I still get Restrictive Performance at 3000 RPM and the motor shakes. What else could it be?

1 Answer

Clyde Hanson

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  • Expert 221 Answers
  • Posted on Dec 21, 2014
Clyde Hanson
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Joined: Dec 16, 2008
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You might have bad connection in wire harness, Wiggle the wires while reving the engine. Do this at night to see any sparks in the dark. Look for sparks around the Spark coil. You may need new coil.

4 Related Answers

Anonymous

  • 566 Answers
  • Posted on Dec 20, 2008

SOURCE: Where is the mass air flow sensor located on a jaguar x-type

hi from the uk the location of mass air flow sensor on x type jag is as follows==it is on the r/h/side of the air filter cover with jaguar embossed on top? this sensor is just prior to the intake hose that connects to the motorised throttle body from filter connections underneath it to unplug and meter is held by two screws ?if memory serves ? may i suggest you remove the large hose and use a little wd40 or similar to clean /lubricate the throttle butterfly in throttle body throat at this point so as to prevent future sticking upsetting of idling ? hope this helps ?

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raygin

Raygin

  • 322 Answers
  • Posted on Mar 10, 2011

SOURCE: I have a 2003 Jaguar S Type V6 and I wanna know

Rather than take a stab in the dark replacing items - get the codes scanned and this should show what area the fault lies in. Normally if there is a fault with the MAF (mass air flow meter) it would normally show as a check engine light (MIL) - is this warning on? So many things can affect these engines from O2 sensors, coil misfires, bad cable connections etc etc. - so best move get the car scanned. Hope this helps (and saves money) good luck.

creg_912

Reggie Coleman

  • 196 Answers
  • Posted on Aug 28, 2011

SOURCE: problem code for JAGUAR s-type 2001------ P1576

change the pedal sensor...thrttle is fine and will function properly as soon as its changed..make sure once you change it you turn the key to position two for 5 seconds then turn it back to position one ,then wait ten more seconds and turn the key to postion two for 5 seconds again to allow the ecu to calibrate.And make sure you unplug the neg terminal to do the install...once reconnected follow the above procedure...the crank the car.

jerry_kramer

Jerry Kramer

  • 3933 Answers
  • Posted on Jul 21, 2014

SOURCE: My car stopped but before it did it read my

I would have it towed to a dealer in this case or a private Jag mechanic.

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VERY ROUGH IDLE NO EXCELERATION

Try a few if these ideas...

Priority Action Part Type Cause
1 Inspect Spark Plug Fouled, Damaged, or Broken Spark Plug(s).
2 Inspect Hose (PCV) Clogged or Collapsed PCV Hoses.
3 Inspect Wireset Worn, Damaged or Faulty Spark Plug Wire(s).
4 Inspect Distributor Worn, Damaged or Faulty Distributor.
5 Inspect Catalytic Converter Clogged or Faulty Catalytic Converter.
6 Inspect Fuel Pump Low Fuel Pressure.
7 Inspect TimingSet Slipped TimingChain or Worn TimingGear(s).
8 Inspect Knock Sensor Improperly Connected or Faulty Knock Sensor.
9 Inspect M.A.P. (Manifold Absolute Pressure) Sensor Faulty M.A.P. Sensor.
10 Inspect Throttle Position Sensor Faulty or Incorrectly Connected Throttle Position Sensor.
11 Inspect Mass Air Flow (MAF) Sensor Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit.
12 Inspect Air Cleaner Temperature Sensor Damaged or Faulty Air Cleaner Tempature Sensor.
13 Inspect Fuel Injector Pressure Regulator Faulty Fuel Injector Pressure Regulator.
14 Inspect Piston Ring Set Worn or Broken Piston Rings.
15 Inspect Timing Specification Incorrect Ignition Timing.
16 Inspect Fuel System Pressure Incorrect Fuel Pressure Being Delivered to Carburetor or Fuel Injection System.
17 Inspect Fuel Filter Clogged or Dirty Fuel Filter.
18 Inspect PCV Valve Plugged or Damaged PCV Valve.
19 Inspect Valve Burned, Worn, or Sticking Exhaust Valves.
20 check idle stop solenoid - if faulty, could cause rough idling
21 inspect distributor cap/rotor - if burnt, could cause loss of acceleration
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