| Author | Message | ||
| Tillman Strahan (Tillman)
Member Username: Tillman Post Number: 840 Registered: 11-2001 |
Fixed! No squeals now. Thanks to everyone in both threads who helped me work through this. Best of all, it didn't have to go to a shop. I dig working on my own car. | ||
| Tillman Strahan (Tillman)
Member Username: Tillman Post Number: 821 Registered: 11-2001 |
I just wanted to thank everyone for their input. I'm going to pick up the gauge and check/adjust the tension on both the AC belt and the alternator belt. If the squeal doesn't go away, the pully replacement is the next step. I really dig working on this car! | ||
| TOM BUCKLEY (Tom_b)
New member Username: Tom_b Post Number: 25 Registered: 6-2003 |
Be careful using a belt dressing. I had a squeeling a/c belt this winter and applied the stuff out of a spray can. It worked but had to reapply every couple of months. The downside is that the overspray got into the alternator bearings and chewed them up. A quick read of the can contents reveals that it is asphalt solubilized in solvent . Pretty abrasive stuff. Tom | ||
| Paul Hill (348paul)
Member Username: 348paul Post Number: 334 Registered: 12-2002 |
V.Z They work out at �30.00 + shipping (+ VAT if applicable.) If you need a genuine one I belive Jeff has them for just over �40.00 Cheers Paul | ||
| V.Z. (Ama328)
Junior Member Username: Ama328 Post Number: 201 Registered: 11-2002 |
Paul Hill, how much for this pulley on a late 328? Don't have problem now, but might be interested in picking one up for future usage. | ||
| Paul Hill (348paul)
Member Username: 348paul Post Number: 333 Registered: 12-2002 |
Tillman, To add to what Verell said below, the Hard Anodising wears off and causes the soft aluminium to be exposed to the belt. With the constant "wedging" action of the belt, the pulley doesn�t really stand a chance. IMHO it would be the first thing I would look at changing. Paul | ||
| Tillman Strahan (Tillman)
Member Username: Tillman Post Number: 815 Registered: 11-2001 |
Would a worn pully cause the squeal? The adonizing is worn off the inside of the pully, but would that matter if it's still rotating correctly? AC system's really irritating me. I already paid to have this fixed....grrrr | ||
| Paul Hill (348paul)
Member Username: 348paul Post Number: 332 Registered: 12-2002 |
The A/C pulley (Part #121405- Old Part#107840) that you are talking about is hard anodised and the one that I have seen has had the hard anodising worn away. I am making a batch of these for a customer of mine as we speak. These are made to a slightly different design to overcome the wear problem � If you need one, just ask and I will make a few over the top. Paul | ||
| Verell Boaen (Verell)
Member Username: Verell Post Number: 996 Registered: 5-2001 |
Search the archives, one of the pulleys on a 328 was anodized Al. If the anodize wears off, the pully quickly wears & squeals. Can't remember whether this was an A/C pulley, water pump, or alternator pulley tho. Search the archives for: pulley anodize squeal... | ||
| Carl Rose (Carl_rose)
Junior Member Username: Carl_rose Post Number: 124 Registered: 10-2002 |
Hi Tillman, Specified tension on these belts is checked according to the manual using a Gates "Krikit" guage. Can be ordered from Carquest - I have the number at home - for about $11. Have to remove inner fender liner to access belts. A squirt of belt lube - for diagnosis - is a good idea. If resolves --> pulley bearings are OK. Can clean pulleys manually by rotating and using emery cloth. Could also clean "dynamically" if accessible with emery cloth on the end of a properly planed dowel, but not sure how smart this would be. If this does *not* solve squeaking might consider removing tensioner pulley (don't know how difficult this is) and spinning on bench buffing wheel to see if this is a high-RPM-only phenomenon. Best of luck.  Carl | ||
| Peter S�derlund /328 GTB -88 (Corsa)
Member Username: Corsa Post Number: 342 Registered: 4-2001 |
I had a humming noise from idle to about 2000 rpm. When changing the AC-belt from the original one to a 1 mm wider, 1 mm deeper and with the teeth on the inside (instead of outside) these humming noises disappeared. This is the code for the belt (standard code, not part number): 9.5-0875 Ciao Peter | ||
| dave handa (Davehanda)
Intermediate Member Username: Davehanda Post Number: 1377 Registered: 5-2001 |
Just for kicks, have you tried a little squirt of belt lube? I've used it in the past, and kept the noise away for many months, though it would usually return. | ||
| Tillman Strahan (Tillman)
Member Username: Tillman Post Number: 811 Registered: 11-2001 |
Greetings, again. My 328 is suffering from a low RPM squeal only when the AC compressor is on. The AC works fine, and the accessory belts are only a few months old. I opened up the fenderwell today and adjusted the tensioner, but even the highest tension still had squealing. The tensioner pully is rotating, and feels 'free'. According to page I18 of the GT4 tech manual, the tension is supposed to be 19kg. What tool do I need to check this tension? The belt feels right by the old 'give it a push' method, but this isn't a Chevy V8 and I don't know how sensitive it is to this setting. Suggestions are appreciated. This is really just an annoyance rather than a real issue, but I hate the car sounding like this. Thanks T |