Question about Jaguar XJ8

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1998 Jaguar XJ8 Vanden Plas drops to limp mode

At startup, the car typically will not engage in gear without feathering the trottle, which results in the transmission dropping into "Limp Mode." At this point the car is diveable, but you are stuck in either 3rd or 4th gear. Local analysis indicated a torque related issue, but trying to narrow it down to reach a fix has proven difficult. Help please!

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  • Jaguar Master
  • 76,109 Answers

Most likely you need an overhaul.

Posted on Mar 25, 2014

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Posted on Jan 02, 2017

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  • 2 Answers

SOURCE: 2001 XJ8 Vanden Plas engine light

I've had the same problem on my 2001. It turned out to be the battery. Apparently the voltage had dropped to the point that the computer began to malfunction. I'd first go to a battery shop and have it checked under load before looking for other solutions.

Posted on Dec 12, 2008

  • 4 Answers

SOURCE: limp in mode

Your shift control computer is getting a bad sensor value. So either a shift control sensor has gone bad, or there is a problem with your transmission. Either take it to a mechanic or buy a scan tool so you can find out the exact nature of the problem if you're going to attempt to fix this yourself.

Posted on Jun 25, 2008

  • 383 Answers

SOURCE: replaced trans, now car is stuck in limp in mode

MCARTER859: check the connections where the transmission harness and engine room harness come together. Unplug them and reconnect them I have run into more than one case with the same symptoms as yours which ended up being nothing more than poor connections.
CROSS YOUR FINGERS1

Posted on Apr 21, 2009

  • 1857 Answers

SOURCE: My car wont change out of 2nd gear. Heard it may

yes its in limp mode. You will need a diagnostic scanner to continue. No way to know what component failed or what code is stored without it.

Posted on Aug 14, 2010

cansmo
  • 2431 Answers

SOURCE: My 1999 Jaguar S type is in limp mode.

Limp mode your dealing with the APP1,Its on the throttle body,You can try and replace the TPS by itself,The problem is the whole unit itself

Posted on Mar 13, 2012

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2 Answers

2004 Jaguar, Vaden Plaus,car just quit running going down the road. Had to have it towed home Won't start,turns over, just won't start,says Restricted Performance.


Sounds like it is some type of 'limp home' mode.
It could be anything. It might be as simple as a bad Fuel Pump Relay. When you turn the Key to the ON position (not Start) can you hear a little buzz for about 1 second? That would be your fuel pump running. You need to see if the engine is getting gas and spark.

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because of the sensitivity of some of these higher end cars i strongly recomend that you take this car to the dealer and allow a jaguar trained tech instruct you on this. youll be happier for it.

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well have you checked the battery? sometimes it is because of low battery power if not you should call a mechanic for it may be a mechanical problem

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2001 XJ8 Vanden Plas engine light


I've had the same problem on my 2001. It turned out to be the battery. Apparently the voltage had dropped to the point that the computer began to malfunction. I'd first go to a battery shop and have it checked under load before looking for other solutions.

Dec 01, 2008 | 2001 Jaguar XJ8

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