99 Regal, bang when shifting to R when cold - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 12-06-2010, 03:33 PM   #11
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Originally Posted by Jonpro03 View Post
Honestly, I thought all of the Regals got 3800s and Centurys got 3100s.
Yeah, I got mixed up, it'* the 3800 in the regal that'* having the problem, I was thinking of the beretta, thanks for catching this.
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Old 12-06-2010, 03:34 PM   #12
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Is this a 4t65e trans? If so, yes, it'* right on top, drivers side behind the throttle body. You should see a round disk, that'* the top. I believe it'* held in place by a retaining ring.
OK, I'll take a look tonight and see what I find. I can't remember exactly the number on the trans, but I'll check that too. Thanks again.
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Old 12-06-2010, 03:39 PM   #13
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Your trans will be a 4T65. Being a Regal owner myself, I can tell you that most likely it'* the mounts and not a trans issue. There is a lot of play in W body mounts.
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Old 12-07-2010, 09:18 AM   #14
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OK I tried to check out the mounts last night. I couldn't find anybody to help so I did the best I could. When rocking the car back and forth while in park, when I pushed back the engine didn't seem to move much at all, when the car came back forward and stopped the engine pulled away towards the firewall. Since I didn't have any help I couldn't check the lower mounts very good. I could see the passenger side lower while looking down through the engine bay and it didn't seem to be moving much from what I could tell. I couldn't see the drivers side lower mount from the top. The front two dog bone mounts seemed to have some visible movement in them, but I don't know what the normal movement is in these. Do they all typically wear out around the same time or do certain mounts wear out faster? I'll try to find somebody to help rock the car while I watch through the wheel wells tonight.
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Old 12-07-2010, 09:30 AM   #15
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You have dog bones so no lower front trans mount. As was pointed out, rotate the bushings on the dog bones 90 degrees. That should help.
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Old 12-07-2010, 09:35 AM   #16
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You have dog bones so no lower front trans mount. As was pointed out, rotate the bushings on the dog bones 90 degrees. That should help.
OK sounds good, thanks for the help I'll give this a try tonight.
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Old 12-07-2010, 10:06 AM   #17
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Danthurs, had one more question, does rotating the bushings usually last a while or is this just a temporary fix and I should be looking to buy some new bushings before too long? I checked on a price on aftermarket and they're not too bad, about $25 a piece.
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Old 12-07-2010, 10:11 AM   #18
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If you remove one dog bone (to keep from having to pull the motor back in line) then spray lube at the outer edge of the rubber in the mount attached to the radiator support. Use a screwdriver to pull the rubber down to lube it up good. Put one of the bolts from the dogbone into the mount and tighten it down. Using a couple or wrenches or ratchets push the mount to rotate it. Frequently having a friend help you get it moving with a screwdriver makes it go much easier. Put that dogbone back on and do the other.

What this does is take the open air space that is originally in a front to back orientation in the mount and puts it up top and puts the more solid rubber in the front/back movement. This helps firm up the engine.

Funny thing: since you posted this I noticed mine hopping into gear a bit hard as well. And I have the urethane front mounts.

If your lower engine side mount is not wet and oily, most likely it is still good.
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Old 12-07-2010, 10:41 AM   #19
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As Bill mentioned, there is a air gap in the front back movement, rotating the bushing take that out and firms up the mount. If your considering new bushings, I suggest just getting new ones and swap them out all together. The rubber gets soft after a while so there may still be some play.
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Old 12-07-2010, 11:15 AM   #20
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Thanks alot guys, this was a big help and I'll be really happy when this is fixed. I'll decide today if I just want to get the new mounts or turn the bushing in the old ones. Maybe I'll take another look at them and decide, thanks again.
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