Question about Jaguar X-Type

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Hi. I have a 2005 X Type 2.0d Sovereign. It has an erratic idle speed when cold running and also has a tendency when in 4th gear, to accelerate on its own. This all clears when the car has warmed up. Oh the car runs fine in the summer months, only starts all this when the cold weather arrives. I have also had it into a Diesel garage and when they plugged it in, it showed no issues, however the problem still exists. Have any other X Type Jag Users had similar issues and if so how was it resolved??

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  • Brock Saint Aoro
    Brock Saint Aoro Jan 02, 2014

    Hi Tony , I would change your cool temp sensor not the one for the gauge the one that controls your air fuel mixture.

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Posted on Jan 02, 2017

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SOURCE: The 2000 mountianeer starts and runs fine but shuts off

CHECK THE COLD START ENRICHMENT VALVE AND OR THE IDLE CONTROL VALVE. I AM ASSUMING THAT YOUR VEHICLE IS FUEL INJECTED. ONE OF THOSE HAVE GONE BAD.

Posted on Jan 24, 2009

  • 3 Answers

SOURCE: Engine will not idle and run when starting in cold weather

Have a mechanic take a look at your throttle position sensor and engine idle sensor. Make him manually adjust them as opposed to just putting in new ones. It may require that you have to have a higher idle than normal. Your underlying cause is going to be that I am sure you have a lot of miles on your engine.

Posted on Jul 20, 2009

  • 14036 Answers

SOURCE: My x-type diesel has been struggling for a few

COULD HAVE BAD FUEL WRONG TYPE FUEL COULD NEED NEW AIR FILTER. DIESEL ENGINE NEEDS AIR TO OPERATE.IF AIR FILTER RESTRICTED.DIESEL ENGINE WONT RUN AND CLOGGED FUEL FILTER CAUSE STARTING PROBLEMS PROBLEMS WITH TURBOCHARGER OR TURBOCHARGER ACTUATOR WOULD CAUSE ENGINE RUN VERY SLOW NO POWER ON TAKE OFF.I SAY PROBLEM IN FUEL SYSTEM OR AIR INTAKE SYSTEM.IF YOU HAD ANY OTHER PROBLEMS THE CHECK ENGINE LIGHT WILL FLASH ON.

Posted on Sep 20, 2011

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Click the links below:---
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http://howtobyme.blogspot.com/2011/12/car-still-runs-rough-after-tune-up.html

-----`-
2006 kia rio runs rough http://technoanswers.blogspot.com/2012/10/2006-kia-rio-runs-rough.html

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Drive cycle


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Drive at 55-65 mph for 1.5 min b/f schdl 2.0-3.2 msec, selector lever "5th" Engine rpm 2,200-3,000
IGN "off" for at least 10 seconds (not more than 5 min)
Dive at 50-60 mph for 3 minutes Selector lever "4th" keep engine speed above 3,000 rpm Allow speed to vary if necessary. Do not decelerate for more than 3 consecutive seconds. A/C switch ON.
Drive at a steady state cruise of 53-58mhp b/f schdl more than 1.8 msec selector lever "5th" eng rpm 2,400-2,600
Downshift to "4th" and decel more than 5 seconds without breaking, then idle for 1 minute.
Drive two minutes b/f schdl less than 2.0 msec Accelerate to 41 mph, decelerate to 34 mph, accelerate to 41mph. Do not completely release the accelerator. A/C switch off.
Idle 1 minute in park or neutral
Drive two minutes Steady state cruise at 31-44 mph. Selector lever "4th" A/C switch OFF. Hold the accelerator pedal as steady as possible. Allow speed to change if necessary.
End of first trip. Turn the key off the begin the second trip.
Second trip:
Start engine, idle for at least 1.5 minutes
Drive 3 minutes, hold b/f schdl: 1.5-2.0 msec, selector lever "3rd" eng rpm 1,800-2,000 A/C switch:ON Hold the recommended b/f schdl range. Allow road speed to vary as necessary.
Drive at 55-65 mph for 1.5 min b/f schdl 2.0-3.2 msec, selector lever "5th" Engine rpm 2,200-3,000
IGN "off" add four gallons of fuel
Dive at 50-60 mph for 3 minutes Selector lever "4th" keep engine speed above 3,000 rpm Allow speed to vary if necessary. Do not decelerate for more than 3 consecutive seconds. A/C switch ON.
Drive at a steady state cruise of 53-58mhp b/f schdl more than 1.8 msec selector lever "5th" eng rpm 2,400-2,600
Downshift to "4th" and decel more than 5 seconds without breaking, then idle for 1 minute.
Drive two minutes b/f schdl less than 2.0 msec Accelerate to 41 mph, decelerate to 34 mph, accelerate to 41mph. Do not completely release the accelerator. A/C switch off.
Idle 1 minute in park or neutral
Drive two minutes Steady state cruise at 31-44 mph. Selector lever "4th" A/C switch OFF. Hold the accelerator pedal as steady as possible. Allow speed to change if necessary. I especially like the part where they want you to add four gallons of fuel. Not three gallons, not five gallons, four gallons. Gotta love those Nissan engineers. ...and of course they state that if the trace is not followed exactly (i.e. you botch the acceleration/deceleration) you have to start all over again from scratch

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1 Answer

My 1999 caddilac eldorado feels like it wants to stall while in gear


Several conditions could be the cause of your problem.
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  2. Bad TPS (Throttle Position Sensor) - controls idle speed under all conditions ie warm, cold, + with A/C running.
It's possible to diagnose further by getting a diagnostic test done. Most chain auto parts stores will run a free diagnostic test to obtain a OBDII code (these codes specify which components are either failing or not responding) It is possible that a combination of both the MAF and TPS are contributing to your problem. If the car will idle when cold and only wants to stall once warm and under way, it's more likely than not to be the TPS.

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