Quote:
Originally Posted by YYC4runner
Hi I am a confessed non-mechanic, 99 4runner 3.4 limited that I have taken good care of for about 19 years, 490k on the truck. Recently I was driving and a rattle from the engine appeared... I parked it in my garage and have tried to diagnose it but am way out of my depth. I did take the opportunity to replace the timing belt and cam seals, crank seal, in case it fixed the issue.
Now I am at a loss!
I have some people saying something has let loose ie cam sleeve bearings or lifters... maybe I should consider a new engine? I would like to get a diagnosis but am not sure what to expect.
Any doses of experience or wisdom welcomed...
Thanks in advance
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You should post your question in the 3rd Gen 4runner section to get a better response.
Here are a few questions.
Does the motor start and run? If so take a video sound recording and post it.
loss of power etc. Is the check engine light on? Check the flex plate for cracks. When it cracks it makes a rattling noise that seems to come from the rear of the engine. There is a cover on bell housing that you'll have to remove to inspect the flex plate.
You can remove the valve covers and look if there is a loose shim.
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