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Engine rattles under load.


 
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poknox
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Joined: 13 Sep 2007

PostPosted: Thu Sep 13, 2007 9:18 pm    Post subject: Engine rattles under load. Reply with quote

I have a 92 Jeep cherokee sport 4.0 with a standard trany. Sitting still in neutral the engine sounds fine. when accelerating or under load above 2100rpm i get a rattling noise that sounds like valve lifters. Any ideas?
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poknox
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Joined: 13 Sep 2007

PostPosted: Sat Sep 15, 2007 2:49 pm    Post subject: (2 Jeep rattles under load. Reply with quote

This jeep has th3 4.0 6cyldr. I changed the plugs and it got better. Could an O2 sensor cause this. I get no code for it. But have dash light on saying change sensor.
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poknox
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Joined: 13 Sep 2007

PostPosted: Tue Sep 25, 2007 2:28 am    Post subject: Found it. Reply with quote

In my case it was the idler pully going bad. Replaced it no more noise.
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