| Author |
Message |
Matt Lemus (Mlemus)
Intermediate Member
Username: Mlemus
Post Number: 2383
Registered: 8-2002
| | Posted on Monday, February 24, 2003 - 9:35 pm: | |
Tom,
Good Luck and I wish you all the best. These cars are a love/hate relationship |
Tom Bakowsky (Tbakowsky)
Junior Member
Username: Tbakowsky
Post Number: 229
Registered: 9-2002
| | Posted on Monday, February 24, 2003 - 8:42 pm: | |
Thank goodness. I had a heck of a time trying to source a good used diff. But I found one. I'm going to install it nexk week,providing I can free up one of my hoists!! |
Matt Lemus (Mlemus)
Intermediate Member
Username: Mlemus
Post Number: 2379
Registered: 8-2002
| | Posted on Monday, February 24, 2003 - 7:09 pm: | |
Tom,
It is not. There is freeplay but nothing too bad.
M |
Tom Bakowsky (Tbakowsky)
Junior Member
Username: Tbakowsky
Post Number: 228
Registered: 9-2002
| | Posted on Monday, February 24, 2003 - 6:30 pm: | |
Matt...I hate to say this but I hope your car does not have the same problem as mine. I have the same kind of nosie in my 308. Tight turns in parking lots would make a low sort of groweling noise. The problem was in the diff it's self. And as you discribe the play in the axel being on the left side as was mine. Check to see that the diff flange were the axle bolts up is not contacting the transmisson case. You should also be able to see scratch marks on the flange if it is. Let me know what you find. |
Matt Lemus (Mlemus)
Intermediate Member
Username: Mlemus
Post Number: 2376
Registered: 8-2002
| | Posted on Monday, February 24, 2003 - 4:27 pm: | |
I jacked the car. Pass side takes effort to move and the driver side is loose and the shaft moves slightly @ the diff.
CV Joint is bad.
Oh well, it's only money. They will print more. |
Hans E. Hansen (4re_gt4)
Member
Username: 4re_gt4
Post Number: 912
Registered: 4-2002
| | Posted on Monday, February 24, 2003 - 3:56 pm: | |
I'm reasonably sure that the CV joints are not submerged in the diff oil. At least they aren't on any other car I've seen. The positraction plates in the diff are meant to supply friction and move against one another with difficulty, but will grab and snap unless 'just the right amount' of lubrication is supplied. Plain diff oil isn't enough unless it has the additive already mixed in. The GM stuff is excellent. You might have to experiment with the needed quantity. And, yes, I'd drive it more than just a couple of miles. The positraction plates are sort of like holding your two palms tightly together. Grease doesn't easily work its way in between them. |
Matt Lemus (Mlemus)
Intermediate Member
Username: Mlemus
Post Number: 2374
Registered: 8-2002
| | Posted on Monday, February 24, 2003 - 3:37 pm: | |
I ran over to the chevy dealer (i love days off) and picked up two bottles of the diff additive and then added it. As I lay under the car with engine oil dripping on me (it is a Ferrari) I realized that since Aug, I have had the diff serviced twice and both times I did not add an additive. I added the bottles and took it for a test drive. Shifts better and quiter but the diff sound is still there. but not as bad. Maybe I need to drive it some more to get it all mixed in. I only drive it 2 miles.
Harry.
I think you are right.
Mark
That is the same feeling I have. I would be curious to see if more have the same symptomes |
Mark Foley (Sparky)
New member
Username: Sparky
Post Number: 35
Registered: 3-2002
| | Posted on Monday, February 24, 2003 - 2:58 pm: | |
When going slow in my 328 I feel a very slight uneveness coming from the rear axles. It feels almost like a dry U-joint or a out of round brake rotor.
I had a similar feeling in my old '69 Corvette.
Is this a normal characteristic of a rear axle with CV joints or U joints?
Should the CV joints be completely smooth and therefore, I should look at them a little closer?
Any comments would be appreciated.
|
Harry (Harry)
New member
Username: Harry
Post Number: 30
Registered: 3-2002
| | Posted on Monday, February 24, 2003 - 2:58 pm: | |
I did not have this problem in the Ferrari. But tight slow turns do not stress the cv joints of a rear wheel drive car like those of a front wheel drive car (greatest angle when turning). Ferrari is probably right, because in a tight turn you have the maximum speed difference of the inner and outer wheel, so your limited slip rings in the differential move relative to each other with no load. I could imagine that the noise is from there. |
Matt Lemus (Mlemus)
Intermediate Member
Username: Mlemus
Post Number: 2373
Registered: 8-2002
| | Posted on Monday, February 24, 2003 - 2:22 pm: | |
I checked the older threads and cv joints are mentioned. Ed Gault said to add a couple of bottles of "positraction" and that should cure it. My questions are still the same but I have more.
1. How can you tell that it IS CV joints?
2. A couple of Guys on that thread added the stuff and said that fixed it. Where would you add it? or where would you get it.
My car makes the noise on slow tight left and right turns in parking lots. |
Matt Lemus (Mlemus)
Intermediate Member
Username: Mlemus
Post Number: 2372
Registered: 8-2002
| | Posted on Monday, February 24, 2003 - 2:10 pm: | |
When turning in a parking lot at slow speeds, 1 -5 mph, I hear a clicky, clanky sort of sound coming from the read. I am assuming it is the diff or axles. I asked Ferrari a few months back and they said it was the two disks in the diff rotating and clanking together and to mot worry about it. I was wondering if..
1. they are right?
2. does anyone else have this issue?
3. should I worry? |