1994 Jaguar XJ6 Logo
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Bruce Eppler Posted on Oct 28, 2013
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1994 jaguar xjs 4.0. cylinders 3 and 4 have spark but are not working. If i pull the plug wire on these cylinders with engine running , there is no change.

1 Answer

Gary Nitowski

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  • Expert 326 Answers
  • Posted on Oct 28, 2013
Gary Nitowski
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Joined: Nov 24, 2010
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Hate to tell you this but it sounds like a bad or cracked coil.
take a look and see,sometimes the cracks are internal check for spark at the coil array if no spark from there theres your problem.High heat causes these type of coil systems to fail.
if you need a new one try "autopartswharehouse.com" or parts geek.com they have hard to find import parts at really good prices.good luck,Gary

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Nov 25, 2008

SOURCE: 05 plate Jaguar X Type 2.5 V6 spark plugs

Sorry old man, but you need to remove the intake manifold to get to the rear plugs.

Good luck!

Tom

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Anonymous

  • 1 Answer
  • Posted on Dec 27, 2008

SOURCE: 1989 jaguar xjs v12 fuel mixture

Chances are the coolant temperature sensor or its wiring have failed, or the vacuum line to the MAP sensor is leaky or broken (I believe the V12 in '89 guise uses MAP sensors). The MAP sensor measures Manifold Absolute Pressure. Along with this pressure the ECU looks at engine RPM. It also measures air temperature. Knowing pressure and temperature we know density, and knowing engine speed tells us how much volume of air is going through the engine. All of this together is computed into air mass and is used to calculate how much fuel mass should be admitted. If the vacuum line is broken, the ECU reads less vacuum and produces rich mixture thinking that the engine is under high load.

alicantecoli

Colin Stickland

  • 22516 Answers
  • Posted on Apr 11, 2009

SOURCE: Jaguar XJS Dead Battery, Trunk Won't Open

jumper lead point under bonnet

Bob B

  • 272 Answers
  • Posted on May 29, 2009

SOURCE: 1989 jaguar xj6 new engine or new cylinder???

At that price replace the engine. Make sure though that you get a warranty for the engine that includes the cost of installation if the new one fails. Most shops will warranty for 90 days which is long enough to find out if there is going to be a problem.

Anonymous

  • 3 Answers
  • Posted on Nov 04, 2009

SOURCE: Engine cylinder mis-fire

standing in front of car cylinder # 1,2,3,4 on the left passenger side and # 5,6,7,8 on right drivers side. in that order for 2000 4.0 jaguar s type

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Hello Macstff ;

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