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98 Kick (automatic) with rattling/knocking at idle ?

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Offline robert_h

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98 Kick (automatic) with rattling/knocking at idle ?
« on: August 20, 2005, 11:11:30 AM »
Hi All,
My 98 Sidekick (automatic transmission) has developed an unusual problem. At idle, it makes a loud rattling/knocking noise. It's much louder in "D" or "R" than when in "P" or "N", which makes me suspect the tranny rather than the engine. The noise is quieter when the vehicle has warmed up. The problem appeared suddenly. Any ideas what might cause this?
Thanks,  - Robert
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Offline Dihnekis

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Re: 98 Kick (automatic) with rattling/knocking at idle ?
« Reply #1 on: August 20, 2005, 01:39:02 PM »
Check your transmission fluid lately?
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Offline robert_h

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Re: 98 Kick (automatic) with rattling/knocking at idle ?
« Reply #2 on: August 20, 2005, 01:51:55 PM »
Yeah, the fluid's full. No evidence of leaking. Tranny fluid & filter were changed 18 months (10k miles) ago.
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Offline b1pig

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Re: 98 Kick (automatic) with rattling/knocking at idle ?
« Reply #3 on: August 20, 2005, 06:34:22 PM »
cracked flywheel?
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b1pig
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Offline derekj

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Re: 98 Kick (automatic) with rattling/knocking at idle ?
« Reply #4 on: August 20, 2005, 06:46:32 PM »
does it sound like it could be the cat converter - they rattle when idling in gear. just give it a few knocks with a big hammer when the vehicle is off and see if it makes the same noise.

derek
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Offline wildgoody

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Re: 98 Kick (automatic) with rattling/knocking at idle ?
« Reply #5 on: August 20, 2005, 11:44:49 PM »
A loose exhaust is much more likely
than a bad something in the trans
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Offline robert_h

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Re: 98 Kick (automatic) with rattling/knocking at idle ?
« Reply #6 on: August 21, 2005, 11:28:09 AM »
I just spent a few minutes under the 'Zuk. The noise does not seem to be coming from the cat or the exhaust system (but that was a good theory!). It's hard to localize the noise, though. It could just as easily be engine noise. The vehicle only has 74k miles. I changed the oil and didn't see any evidence of metal in the oil. 
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Offline mth712

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Re: 98 Kick (automatic) with rattling/knocking at idle ?
« Reply #7 on: August 21, 2005, 03:17:27 PM »
Flywheel, U-joints .....
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Thanks,

        Mike
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Offline robert_h

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Re: 98 Kick (automatic) with rattling/knocking at idle ?
« Reply #8 on: September 25, 2005, 12:08:22 PM »
I wound up taking the vehicle to my mechanic. The problem turned out to be internal to the torque converter, so they had it rebuilt. The mechanic thought it was a very unusual failure. Anyway, things are now back to normal.
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