Question about 2004 Subaru Forester

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Loud chatter on start and rattle from timing chain area

Had car for almost 3 months with no problems now it makes grinding/chattering noise

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The timing chain area also takes in the alternator and water pump. To isolate the source of the noise, use the old mechanics trick.

Place a 3 foot 1/4 inch brass rod against the flap at the opening of your ear and push until it closes. Place the other end of the rod against various engine components and listen. The noisy problem will conduct the noise up the rod to your ear and you can hear quite precisely where the problem is. Much safer than laying your ear all over a running engine.

You can also loosen the fan belt and run the engine without alternator or water pump (briefly) to see how that affects the problem. Chatter on start makes me think of starter and Bendix gear problems. Sounds like a 2 person diagnostic team to me; one to start the car and one to listen and probe.

Don't know if Subaru Forrester has an engine that has valve interference at piston Top Dead Center. If it is and the timing chain breaks, you are looking at major $$ to recover.

Posted on Nov 06, 2012

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Posted on Jan 02, 2017

kachbibi1
  • 979 Answers

SOURCE: I think the big end bearings are chattering at 3000rpm

Sounds like it could be the rear end differential.

Posted on Feb 10, 2009

  • 1 Answer

SOURCE: Chain rattling sound right front

no it would not be the timing belt making a rattling noise it couldn possible be you heat shield around your break rotor it could be someting having to do with ur suspenion like a spring maybe what kind of rattling noise? or a regular heat shield but loose in that particular area

Posted on Mar 31, 2009

  • 18 Answers

SOURCE: Since it's been cold in my area, my car has been

you need to look at replacing the front axle sounds like you have bad u joints

Posted on Dec 28, 2009

ourhowse
  • 2007 Answers

SOURCE: My 1998 Subaru Legacy makes

Providing you have inspected the u-joints, i would think it would have to be a pinion bearing gone in the rear end at the very least. No oil or additive is going to fix it. It will have to be torn down and inspected.

Posted on Sep 10, 2010

  • 27 Answers

SOURCE: Can a 2001 Subaru Outback take an aftermarket stock clutch or do you have to go with a Subaru clutch only? fighting clutch chatter two clutches in two months after orignal clutch lasted 130k miles?

Get a new clutch kit AND flywheel. Don't turn a flywheel more than once, just like with brake rotors. Any car can use an aftermarket clutch replacement (as long as they fit, of course). If you get a lightened flywheel, you'll enjoy better acceleration and mileage (city driving) as well.

Posted on Oct 18, 2012

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However, if you are experiencing chain "chatter", it is possible to reduce this noise by either:

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