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Author Topic: Grinding sound from AT  (Read 1430 times)

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Joe Green

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Grinding sound from AT
« Reply #-1 on: July 19, 2013, 01:22:01 PM »

Hey, it's me again with my 16 year old troublemaker!
I've been hearing this low, grinding noise for a few months (barely driven). I thought this was the ac compressor b/c it just died on me, but after replacing it, the noise is still there.

I have been noticing it only makes this groaning/grinding sound when I'm idling in Drive or Reverse, not in neutral. That's why I think it's something to do with the transmission or flexplate. I just watched a youtube vid and it's def not a flexplate knock.

Any ideas? Thanks!

*Edit: I checked the ATF level 2 days ago and it was good, fluid looked good. Checked the TC level, too.
« Last Edit: July 19, 2013, 01:40:34 PM by Joe Green »
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1997 XJ Country with some upgrading.

wb joe

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Re: Grinding sound from AT
« on: July 19, 2013, 04:02:15 PM »

sometimes on XJ's you will hear a grouling nosie with foot on brake cuz of a weak motor mount.but i would need to hear it to diag
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Joe Green

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Re: Grinding sound from AT
« Reply #1 on: July 19, 2013, 04:53:36 PM »

I'm going to check out the flex plate this eve. I've replaced the tran mount and the pass motor mount was good a few months ago when I was going at the oil filter adapter. I'll give the mounts a look.
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wb joe

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Re: Grinding sound from AT
« Reply #2 on: July 19, 2013, 08:01:53 PM »

drivers is the one that gose
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Joe Green

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Re: Grinding sound from AT
« Reply #3 on: July 19, 2013, 09:37:02 PM »

Forgot to check the mounts, but I had a buddy put it in drive and park while I listened at the flex plate inspection cover. Pretty sure it's a loose bolt in there. Need more tools to open it. Will get back to it next week at my folks' garage.

"There's what's right and there's what's right and never the twain shall meet."
-H.I. McDonnough

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1997 XJ Country with some upgrading.

Joe Green

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Re: Grinding sound from AT
« Reply #4 on: July 21, 2013, 10:53:56 PM »

Checked out the ds motor mount & it's good. On to the flex plate...

"There's what's right and there's what's right and never the twain shall meet."
-H.I. McDonnough

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Joe Green

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Re: Grinding sound from AT
« Reply #5 on: July 28, 2013, 09:13:54 AM »

Took the flex plate inspection plate off, took each flex plate bolt out one at a time, cleaned them and then tightened them on with loc-tite. Afterwards, I drove 250 miles. No more rattling!

"There's what's right and there's what's right and never the twain shall meet."
-H.I. McDonnough

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1997 XJ Country with some upgrading.
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