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2001 Subaru Legacy ENGINE KNOCK

Tiny
CAROLYN MCDONALD
  • MEMBER
  • 2001 SUBARU LEGACY
  • 4 CYL
  • AWD
  • AUTOMATIC
  • 82,000 MILES
At about 50,000 miles, my Subaru started making a ticking sound when first started in the AM for about 10 mins of driving. I took it to 3 different garages in Alaska, all of whom told me it was the Subaru tick. Ever heard of that? Now for the past year, the "check engine" light comes on periodocally. I took it to a garage that told me the "knock censor" is indicated in the diagonostic check. What is causing this and is there anything I can do. Is it going to be a problem in the future? I've had this car since it was 2 years old with 20,000 miles on it and I hope to keep driving it for a long time. Thanks
Carolyn McDonald
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Wednesday, May 28th, 2008 AT 2:09 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

If a knock sensor I faulty you will hear a "rattle" sound from the engine when accelerating this is engine "ping" caused by incorrect ignition timing. A tick may be a bad valve adjustment, these are easily checked so I would start here.

Mark (mhpautos)
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Thursday, May 29th, 2008 AT 12:07 AM

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