2005 Jaguar S-Type loss of power and poor performance

Tiny
BRIANMARTINATL
  • MEMBER
  • 2005 JAGUAR S-TYPE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 65,000 MILES
Hello,
I am having a problem with my s type that is stumping me. The car starts fine and idles fine, but when I start to drive the rpms drop and it sounds like it is not firing. It is most prominant around 35 - 50 mph. You can hear a hollow sound like fuel is not being ignited. The engine light is not on and the only code that I am reading is P1111. Could this be a ignition coil problem or am I having an issue with IAT. Is the IAT sensor built into the mass airflow on this car? Any help would be appreciated. Thank you.
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Friday, July 31st, 2009 AT 9:59 AM

4 Replies

Tiny
MERLIN2021
  • EXPERT
EMISSIONS RECALL J004: REVISED ON-BOARD DIAGNOSTIC SYSTEM Campaign Bulletin Reference Number(s): J004 (Issue 2), Date of Issue: January 28, 2009 Related Ref Number(s): J004 ARTICLE BEGINNING AFFECTED VEHICLE RANGE S-TYPE (X200) VIN: M94769 - N52047 Model Year: 2004 - 2005 XJ (X350) VIN: G00584 - G49700 Model Year: 2004 - 2005 XK (X100) VIN: A36874 - A48682 Model Year: 2004 - 2006 X-TYPE (X400) VIN: D55322 - E19613 E20262 - E99999 J00001 - J28328 Model Year: 2004 - 2007 CONDITION SUMMARY Situation: A number of emission regulations non-compliance issues relating to the On-Board Diagnostic (OBD) system function covering thermostat diagnostic, calibration verification, in-use monitor performance ratio, and an emission issue relating to open loop smoothing (vehicle remains in open loop after fuel cut-off for prolonged periods) have been identified. In addition, a group of deficiencies have been identified within the OBD system function related to the evaporative leak diagnostic. Action: Dealers are to update the affected vehicles' Engine Control Module (ECM), and where applicable the Transmission Control Module (TCM), software as outlined in the Repair Procedure below. Consult the table containing the model years, VIN range, and repairs required prior to performing any software updates. Owners will be notified by Customer Letter of this Recall with the request that they contact a dealer to have the update(s) performed. At the time of customer appointment, ensure that all outstanding service campaigns for each individual vehicle are identified and allocate sufficient time and resources Affected Model(s): S-TYPE, XJ, XK, X-TYPE NOTE: Customers should be informed that after the adaption clearing procedure and reconfiguration repair, the transmission shift quality will improve over time as the transmission adapts to the customer's individual driving requirements. Page 1 of 4 EMISSIONS RECALL J004: REVISED ON-BOARD DIAGNOSTIC SYSTEM -2005 Ja. To complete all campaigns. To identify repaired vehicles, US dealers must complete and install a Service Action 'Authorized Modifications ' label on the radiator support panel. California dealers are required by the California Code of Regulations to complete a salmon-colored 'Vehicle Emissions Recall - Proof of Correction ' certificate. This form must be provided to the customer for vehicles registered in California when the Recall work has been completed. PARTS JLM21848. Authorized Modification label (pack of 25) - USA only Qty: 1 JLM21849. CA Vehicle Emission Recall - Proof of Correction certificate (pack of 100) Qty: 1 TOOLS IDS with DVD116 Patch File 4 or later Midtronics PSC-550 Vehicle Power Supply WARRANTY Warranty claims should be submitted quoting Program Code J004, together with the relevant Option Code from the table below; this will result in payment of the stated time. As Option Codes are used, there is no requirement to enter parts or labor; these are provided for information only.
NOTE: DDW verification is required to ensure that the vehicle is affected by this Recall action prior to undertaking any rework action. DDW will be updated to reflect only affected vehicles. NOTE: The option that contains the drive in / drive out allowance may only be claimed when the vehicle is brought into the workshop for this Recall action alone to be undertaken. NOTE: Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always refer to DDW to obtain the latest repair time. Did you get this RECALL letter? Have the repairs been done? Start here, because anything you do now may be unneeded.
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Friday, July 31st, 2009 AT 1:10 PM
Tiny
BRIANMARTINATL
  • MEMBER
When I called the dealer he stated that the recall was only a software update and had nothing to do with the overall performance of the car. I will get it done on Monday and see how bad they try to soak me for the added repairs that they will find. Hennesey Jaguar in Atlanta GA has been awful with the charges that they come up with. I had the lurching problem that is common with the s type transmission, they charged me $300 to re-program. I hate to go there because it always drains my account.
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Friday, July 31st, 2009 AT 2:06 PM
Tiny
MERLIN2021
  • EXPERT
This reprogram is free it's a recall for emissions, then if the problem still exists, test the fuel pump pressure, How good are you with working on your Jag? Click on this link to learn how to test the pump.
http://www.2carpros.com/car_repair_video/test_fuel_injection_pressure.htm
Go here and checkout our video.
http://www.2carpros.com/affiliate/uid/merlin2021_1
Tools available here!
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Friday, July 31st, 2009 AT 2:10 PM
Tiny
CRAIGINPA
  • MEMBER
Cross the IAT off your list of suspects, as it is only used to keep the car running at idle.

I'd begin with the fuel pressure test, but I'd also suggest that you may have a dirty MAF. At 65K, it's certainly wouldn't hurt to clean it.
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Thursday, August 6th, 2009 AT 7:27 PM

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