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1997 Jaguar XJ6 Engine rattle - Timing chain or Steering pu

Tiny
PBY
  • MEMBER
  • 1997 JAGUAR XJ6
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 97,000 MILES
I have a rattle coming from the engine bay only appears once the engine is warmed up and is worse at about 2000 rpm. My mechanic has diagnosed it as timing chain, however, the noise disappears if I turn the steering wheel with the foot brake applied. My feeling is that it is related to the power steering pump. How can I be sure and if it is the steering pump what can be done to fix it?
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Sunday, May 4th, 2008 AT 7:49 AM

1 Reply

Tiny
JAMES W.
  • MECHANIC
  • 2,395 POSTS
Applying the brake and turning the steering wheel will drop engine rpm. Try doing this and maintaining 2000 rpm and see if the noise returns. If it does it may be chain slapping. If not, I would look at the steering pump or maybe a loose heat shield on the exhaust system.
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Tuesday, October 7th, 2008 AT 2:35 PM

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