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1990 Jaguar XJS No Horsepower

Tiny
LAXUSPARTS
  • MEMBER
  • 1990 JAGUAR XJS
  • V12
  • 2WD
  • AUTOMATIC
  • 89,000 MILES
The jag was running perfectly down the hwy and all of a sudden lost power to where it will only rev in neutral to 3000 rpms and 1500 in gear with no power. The both sets of cat have been knocked out, engine tuned up and with fresh gas but still no change. The fuel pump does tick even when the car is turned off. Any suggestions would be appreciated.
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Thursday, May 1st, 2008 AT 11:11 AM

2 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Start by checking fuel pressure. If it is ok, use a timing light to see if the ignition is advancing like it is supposed to.
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Saturday, May 3rd, 2008 AT 7:58 AM
Tiny
SHADOWFOX1986
  • MEMBER
  • 4 POSTS
Check your distributor cap and rotor for damage. This is a year the marelli ignition was installed and the rotor is notoruous for short circuits. Usually the passenger bank/bank A would not have any spark. Remove the rotor and check underneath it for what looks like a torch has been taken to it, If it does then a new rotor is needed. Good luck
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Monday, July 14th, 2008 AT 10:09 AM

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