Transmission Trouble, Slipping?? (Series I SC)

I was comming back from a business trip and made it to the road I live on. When I pressed the gas to the point the supercharger starts to kick in, I get this violent clicking/shakeing that seems to be comming from the drivers side front wheel area. Maybe more toward the tranny. It dosent happen unless I really get on it. I had the tires rotated and balanced the morning of the day it started. I wouldnt think that would have anything to do with it. I see many of you guys have had broken mounts in the past. Just want to know iw that shakeing sounds familiar. Thanks for all of your help!

1995 Riv S/C

Sounds to me like it could be a bad C/V shaft(half shaft/axel)

When's the last time you changed your ignition wires?

Does it happen while downshifting or mid gear?

Mid gear throttling up. I have not changed ignition wires ever. I may take the front driver side wheel off and inspect the C/V shaft. It seems like it could be breaking loose.

How many miles are on the car? Does the symptom start gradually as you depress the throttle, or does it happen all of a sudden once you reach a certain point?

It just hit 100,000. No, I would say durring acceleration about mid to full throttle. basically, when I stomp it. When the Supercharger starts to whine, and when the engine is putting out most of its power. Slow accel is smooth. I can rev it in park with no problems. I jacked the front end up, put it in drive and stomped it. No problems. It only when the engine/tranny is under load. The problem is, i cant ride on the motor and have some one drive. Well, i guess I could but I dont want to. I need a Dyno. It really feels like something is slipping/gears are jumping. Thanks, for any help.

To 95_River
I don’t think that it is a broken trans mount.
Broken trans mount it is well sensible, when you are sharply switched from Р to D (or R), there will be a small wince and quiet knock. By your description at you something another …

but it’s my opinion only

90% sure it's ignition wires (or spark related at least). Replace them before you waste too much time/money on the other stuff. OEMs are the best, imo... $65 or so at the dealership.

AA wrote:

$65 or so at the dealership.

... $30 + shipping at partszoneonline.com, original GM replacement

I'll order plugs and wires. But I have never felt a motor sutter like this because of a ignition issue. Let me go order some parts.

I have your symptoms 95 River, with the clicking at just past mid throttle to WOT. I don't have the shaking though....I have brand new plugs and wires and it got rid of my "bucking", but that was a separate issue.

I'm going to order some wires and plugs. I've been meaning to order plugs because I put CAI on it not to long ago. If that corrects the issue, I will be very happy. If not, I have to sell it. I need a business car thats road ready. I hate to do that but I cant dump any more money into it. The A/C compressor is out right now too. Thats going to be expensive. Thanks for the help guys.

NO GO! New Autolite 104s, New set of wires, 3 skint knuckels and the problem is the exact same. I'm telling you, its like the left cv/axle is breaking loose then catching 2 or 3 times a second. Can an axle be stripped? I need to take this one to the shop. I bet its going to be big bucks.......damn.

I have just replaced my spark plug wires myself, and the problem is still there at WOT. I'm taking the advice to change the ignition wires next.

Sorry that wasn't the problem. At 100k, you needed to change the wires anyway, so good to get it out of the way.

Update: Transmission is busted. $3100 to fix. A/C Compressor dead. Sold car. Purchace a Honda Accord EX!

LOL nooooo!!!

ok I have an 95 riv sc last weekend I had my transmission fluid & filter change, but today when I put my riv in gear the car just drifted backward, also the car went in to gear after 5 mintues and smoke started to come out of the exhaust. I would like to know whats the problem or could u give me some advice . I hope my transmissions is not going up.

Sounds to me like the vacuum modulator try that first un plug vac line see if trans fluid is present u said car smokes so it should be the problem if not u should scan the computer for trans cods

I had my tranny fluid changed back in March and since then I've had some tranny issues as well. The car slips a little when it's cold and dosent like to shift. It also accelerates very slowly off the line until it warms up to normal temp. I'm not sure what could be causing this...I was thinking it could be a solenoid.....but now I'm not so sure.

Questions:

1) did we only have the fluid changed, or was it flushed?

2) were there any issues at all before the fluid change? (sometimes we get this done at the first sign of trouble, as a possible fix)

I only had the fluid changed, and there were no problems at all

In my case, I only had the fluid and filter changed and noticed the shifting problems since having that done. Before the tanny service was done my car shifted fine, but was just a little rough when put into gear with a slight kick. That was the main reason I had the fluid changed to begin with, I figured new fluid and a filter would help smooth it out.

ok I just got my transmission scan @ aamco they said that I need an new egr valve