Suzam Posted August 12, 2008 Share Posted August 12, 2008 Hi all, my 2001 OBW 2.5 with 68K is sick. The wife came home tonight saying the car was making a scraping or swish-swoosh noise. I popped the hood to see the AC belt in shreds. I figured I'd remove the leftovers and replace it this weekend since it's been cool here this week. After cleaning it up (part was wedged behind the AC pulley) the AC pulley and the clutch spin fine so that didn't seize up. I started it up and it's still making the noise and it's relatively loud. The swoosh-swish noise kind-of follows the rotation of the crank pulley but I could be wrong in the dark. I can't see anymore of the broken belt anywhere with a flashlight. My first thought was water pump failure but I don't think it could break the AC belt because it runs off the crank pulley. Although the noise seem to be in the center at the crank pulley. Has anyone had anything similar happen? Could a piece of the belt be lodged behind the double pulley somehow? I going to try driving it to my mechanic in the AM, he's only about 2-3 miles away. Hopefully I won't be damaging anything on the way. Thanks! Link to comment Share on other sites More sharing options...
nipper Posted August 12, 2008 Share Posted August 12, 2008 Check the tenioner bearing on the AC belt, its probably bad. nipper Link to comment Share on other sites More sharing options...
McDave Posted August 12, 2008 Share Posted August 12, 2008 Check the tenioner bearing on the AC belt, its probably bad. nipper Is there another belt still turning it? Seems like it would just be sitting there with the a/c belt gone. Link to comment Share on other sites More sharing options...
nipper Posted August 12, 2008 Share Posted August 12, 2008 I thought you said you replaced the belt? Spray some water on the other belt and see if the noise changes. Link to comment Share on other sites More sharing options...
McDave Posted August 12, 2008 Share Posted August 12, 2008 I thought you said you replaced the belt?Spray some water on the other belt and see if the noise changes. Wasn't me: I popped the hood to see the AC belt in shreds. I figured I'd remove the leftovers and replace it this weekend since it's been cool here this week. Link to comment Share on other sites More sharing options...
nipper Posted August 12, 2008 Share Posted August 12, 2008 Wasn't me: i just had a bad idea. Start the car and look at the bottom pulley. Does it have any wobble in it? If it does don't drive the car and have it towed to the mechanic. Another source for noise can be a bad altenator bearing or a possible PS bearing. nipper Link to comment Share on other sites More sharing options...
Suzam Posted August 12, 2008 Author Share Posted August 12, 2008 No noticeable pulley wobble, the car has only 68k and the crank pulley hasn't ever been removed. I suppose it could work it's way loose on it own but it would have been from the assebely plant that way back in 2001. I looked some more in the daylight this AM and see nothing else. The AC belt drives only the AC. The other belt is turning normally and drives the PS and Alt. but the noise still seems to be around the crank and not from the accessories. I'm gonna drive it over to the mechanic and let him deal with it today. Link to comment Share on other sites More sharing options...
nipper Posted August 12, 2008 Share Posted August 12, 2008 No noticeable pulley wobble, the car has only 68k and the crank pulley hasn't ever been removed. I suppose it could work it's way loose on it own but it would have been from the assebely plant that way back in 2001. I looked some more in the daylight this AM and see nothing else. The AC belt drives only the AC. The other belt is turning normally and drives the PS and Alt. but the noise still seems to be around the crank and not from the accessories. I'm gonna drive it over to the mechanic and let him deal with it today. Well highly unlikely due to the low mileage, but only things down there to make noise are the water pump, the timing belt tensioner and idler. nipper Link to comment Share on other sites More sharing options...
McDave Posted August 12, 2008 Share Posted August 12, 2008 I vote for a piece of belt stuck between the crank balancer and timing belt cover, or something along those lines. Link to comment Share on other sites More sharing options...
Suzam Posted August 12, 2008 Author Share Posted August 12, 2008 Ding! Ding! Ding! Sorry Folks, time is up and we have no winner. Seems the harmonic balancer which is made of a harden rubber(?) has decided to disintegrate. This allowed the pulley to move in towards the engine thus shredding the AC belt. The noise that was left over was from the other belt being off center and the pulley itself rubbing into the plastic timing belt cover. Since he's in there I'm having him check my cam seals etc. while the cover is off. Anybody heard of this before? Link to comment Share on other sites More sharing options...
OB99W Posted August 12, 2008 Share Posted August 12, 2008 Ding! Ding! Ding! Sorry Folks, time is up and we have no winner. [...] Anybody heard of this before? Actually, Nipper was suggesting the exact problem when he said "Start the car and look at the bottom pulley. Does it have any wobble in it? If it does don't drive the car and have it towed to the mechanic." The crank pulley is made of two pieces of metal, with the rubber between them. When the rubber fails, the problem you're having can happen. Link to comment Share on other sites More sharing options...
McDave Posted August 12, 2008 Share Posted August 12, 2008 Actually, Nipper was suggesting the exact problem when he said "Start the car and look at the bottom pulley. Does it have any wobble in it? If it does don't drive the car and have it towed to the mechanic." The crank pulley is made of two pieces of metal, with the rubber between them. When the rubber fails, the problem you're having can happen. Yep, and even though it had slipped, it just didn't wobble. Good call Nipper. Link to comment Share on other sites More sharing options...
Suzam Posted August 12, 2008 Author Share Posted August 12, 2008 OK I'll concede that Nipper was correct in asking about the wobble, but he looses points for not explaining the reason why he asked the question. I'll treat it as a "follow-up" type of question in two parts. Link to comment Share on other sites More sharing options...
nipper Posted August 12, 2008 Share Posted August 12, 2008 Ding! Ding! Ding! Sorry Folks, time is up and we have no winner. Seems the harmonic balancer which is made of a harden rubber(?) has decided to disintegrate. This allowed the pulley to move in towards the engine thus shredding the AC belt. The noise that was left over was from the other belt being off center and the pulley itself rubbing into the plastic timing belt cover. Since he's in there I'm having him check my cam seals etc. while the cover is off. Anybody heard of this before? Hey i was very very close. Yes this happens on all engines, just uncommon. nipper Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now