Lurch to left
Thread Starter
Burning Brakes
Joined: Feb 1999
Posts: 1,157
Likes: 3
From: Encino CA
Lurch to left
I generally drive the car pretty easy (95 LT-1 coupe auto), but on the occasional hard acceleration from a stop, there is what feels like a leftward "shift" at the rear just before the tires grab. It is not tire slip since this happens just at the instant before traction is transmitted to the tires. If I bring the car into my local guy, can any of you suggest what he should be looking for?
Thanks,
Doug
Thanks,
Doug
Melting Slicks
Joined: Jul 2006
Posts: 2,151
Likes: 0
From: Strongsville Ohio
well from driving in another car that has bad shocks and springs. Id say MAYBE that when you hit you gas hard since your rear end sinks. It might be pulling in the direction of the spring or shock that is bad. the bad one will be lower than the good one causing pull
Thread Starter
Burning Brakes
Joined: Feb 1999
Posts: 1,157
Likes: 3
From: Encino CA
Doug
Thread Starter
Burning Brakes
Joined: Feb 1999
Posts: 1,157
Likes: 3
From: Encino CA
Le Mans Master
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
That's what I'm thinking also. Mine sometimes has a little rear shift to the left even with ASR on but the ASR flashes and catches it before it goes sideways. It's more noticeable when traveling across lanes or if the wheel is not completely straight. I figured it was just a result of hp and hard shifts.
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Safety Car
Joined: Jul 1999
Posts: 3,946
Likes: 63
From: Marianna FL
The rear end shifting under acceleration, shifting, or anything like that is NOT normal. I would check the C-beam bolts at the rear and the transmission as suggested above. My car or the automatic 95 I had before do not exhibit any of these problems.
To the original poster asking about he C-beam, I have no photos to post, but the C-beam connects the rear of the transmission to the differential housing. There are two bolts at the front and two at the rear. I cannot remember for certain, but I think you'll have to drop the exhaust to check the ones in the front. This connection of the trans and differential needs to be tight.
To the original poster asking about he C-beam, I have no photos to post, but the C-beam connects the rear of the transmission to the differential housing. There are two bolts at the front and two at the rear. I cannot remember for certain, but I think you'll have to drop the exhaust to check the ones in the front. This connection of the trans and differential needs to be tight.
Pro
Joined: Jan 2004
Posts: 707
Likes: 0
From: Syracuse Utah
Right! It's really tucked up into the tunnel so you will need to crawl under there to see everything. If these bolts on the nose of the differential and the tail of the transmission work loose then the differential can flex and cause the movement you are talking off. Someone (can't remember who but do an internet search) makes what they call beam plates to distribute the clamping force of the bolts to a larger area to help prevent this problem. Check the torque on the bolts and make sure they are as tight as you can get them.
Le Mans Master
Joined: May 2006
Posts: 9,226
Likes: 9
From: Irvine Ca
For the sideway lurch, you need to be thinking about the bushings in the 4 Dog Bones If they are worn out your rear wheels are "Steering" for you.
This will also give you a feeling of the rear shifting around during hard cornering.
Sadly, the busings are a few bucks but they need to be pressed in the Dogbones. The Dogbones are about $45 each at the Stealership. There are Two per side.
This will also give you a feeling of the rear shifting around during hard cornering.
Sadly, the busings are a few bucks but they need to be pressed in the Dogbones. The Dogbones are about $45 each at the Stealership. There are Two per side.
Thread Starter
Burning Brakes
Joined: Feb 1999
Posts: 1,157
Likes: 3
From: Encino CA
Thanks for all of the replies. Maybe I am noticing it more now since I have gotten into the habit of turning the ASR off. The next time I bring the car in for oil change I will ask the guys to check the trans-to-differential connection as well as dogbone bushings.
Doug
Doug