Broken Mount(Now fixed) + No AC Bolt? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 08-16-2007, 01:48 AM   #1
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Default Broken Mount(Now fixed) + No AC Bolt?

Is this a broken front engine mount? I know one is broken, but I dont know what a broken mount should look like.

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Second Problem-I started noticing a rattling noise when I would come to a stop light with or without the A/C on. I did some investigating, and I found that there is no bolt in this hole on the A/C compressor. When there is load on the engine the noise stops, but when idling at a light it makes a bad rattle. Can anybody get a pic of the bolt i need to replace it with or give me the specs on the size/thread pattern.
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Thanks yall!
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Old 08-16-2007, 02:17 AM   #2
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I'm not sure about the AC, but your mount appears okay. Any chance you can squeeze a sideways shot in here? As long as there is no play, it'* solid, and there'* no breaks in the rubber or weld, it should be alright (Again, this is only from the pics you've posted so far...)

I've had to replace that mount before when I first got the Devil, it wiggled all over when I got it off ... not hard to replace if needed.
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Old 08-16-2007, 02:20 AM   #3
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I think that your rattle is likely the harmonic balancer.
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Old 08-16-2007, 02:27 AM   #4
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Quote:
Originally Posted by Archon
I think that your rattle is likely the harmonic balancer.
x2... I have known many of our cars to have this issue, and a lot of people tend to mistake it for a bad engine (cause it happens oh so often in the 3800...[sarcasm] )
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Old 08-16-2007, 02:59 AM   #5
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If it is the HB, I will fix that second. I need to get a bolt for that A/C first, as that is the cheapest and easist way to figure out what my rattle really is. Again, anybody know the specs of that bolt?
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Old 08-16-2007, 03:08 AM   #6
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By the looks of it, if there ever was one there, it'* been gone a long time. Not having your year, I can't check - but are you sure that one even goes there? It'* hard to tell from the picture, but is there something behind that where it would thread in?
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Old 08-16-2007, 03:43 AM   #7
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93 SE...My dad used a mirror to look in there and he thinks it should. Its been rattling for a while. The twist when the A/C kicks on is quite a movement. If the HB is bad I should be able to wiggle it back and forth with the belt off correct?
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Old 08-16-2007, 08:29 AM   #8
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On the AC, there are 3-4 bolts that hold it in place. Hit up TJ for the bolt spec...he'* got a couple laying around to measure. The bolts come in from the backside (on your year) and from your picture...we can't tell if it'* missing.

As for the motor mount. Is that a tear/crack near the top metal bracket? If you have any question about a motor mount.. merely observe it while you have someone else hold the brake and give it a small rev in D. (stand to the side) You will see the mount.

Bandit would be a good person to explain this, he wasn't sure how to check a mount at first and learned on his new SSEi. When sitting there..it looks fine, when torque is applied..his eyes did this
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Old 08-16-2007, 08:41 AM   #9
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You can see the engine move big time with the hood open from inside the car when you rev. I also had the tranny looked at and when the guy drove it, he said there was a bad mount (but didnt say where)
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Old 08-16-2007, 09:17 AM   #10
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Most likely it was the front trans mount that you took the picture of.. but double check it.
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