

| Subject: | Re: Troubleshooting a noise |
| From: | Annie |
| Date: | Thu, 27 May 2010 15:11:50 -0700 |
In case anyone else missed it earlier, it's a 1985 GL with an auto trans. (I sent it in a 2nd post right after the first one.) Be blessed, ~Annie On Thu, May 27, 2010 at 1:36 PM, Michael Sullivan <sandwichhead@gmail.com>wrote: > Annie, tell everyone what year and type of van you have...sounds like > auto. Someone will chime in. > Michael in San Antonio > 91GL Weekender AT 2.1L 'Gringo' > 73 Beetle > > > On Thu, May 27, 2010 at 3:29 PM, Annie <lsandrsn@gmail.com> wrote: > >> I've had my van back from the mechanic for about a month now. All has been >> fine and everything has been operating smoothly. I've made a few longer >> trips than normal (about three 100+ mile trips) so I've put about 750-ish >> miles on it over the past 4 weeks. Normally, I drive about 450 miles a >> month. >> >> Anyway . . . a couple of days ago, I began hearing a noise once I got >> above >> 30 mph. It sounds like a turbine engine or something! Very loud rubbing >> type >> of sound and makes things kinda vibrate. The noise is definitely louder in >> the back of the van than in the front. When I step on the brakes, there is >> a >> bit of shudder initially but then it goes away. >> >> The first day I noticed it, when I got home, I put it in park, and revved >> up >> the engine to see if would make any noise and the sound wasn't there. So, >> I >> ruled out an engine issue. After everything had cooled, I checked the oil >> as >> well as the transmission fluid. The oil was fine but the tranny fluid >> seemed >> a bit a low so I followed the procedure in the Bentley for that and ended >> up >> adding about 1/4 of a bottle. >> >> I went online and searched the archives here as well as on the Samba and >> from what I read, it sounded like perhaps the seal in the final drive of >> the >> transmission might be bad. I'm not entirely sure, though, because it >> shifts >> well - no odd noises when shifting (it's an Auto trans, btw), it shifts >> smoothly and seems to operate as it should. >> >> So, last night after my mom and I went for a drive so she could hear the >> noise, we called the mechanic (who happens to be my Uncle) and he said >> perhaps it could be something else with the wheel bearings. He told me to >> let it cool down and then this morning to check the air in the tires (they >> were a bit low - 29 to 30 psi and recommended is 35 so I filled them to >> 33). >> I then drove to town on the highway as he recommended to see if there was >> any change in the noise at higher speeds. >> >> What I found is this - when I'm starting from a dead stop, there is no >> noise >> in 1st gear - everything sounds normal. If I take it nice and slow, the >> noise doesn't begin until I hit about 26-27 mph and am in Drive. BUT - if >> I >> start from a dead stop and proceed at a normal accelerating speed, the >> nose >> starts immediately after the tranny shifts to 2nd gear - regardless of >> what >> speed I'm going. At this level, though, it is not as loud but it is >> beginning. >> >> I also noticed that the sound is loudest between 26 mph and up to about 45 >> with the absolute loudest being right around 30 to 35 mph. Once I get >> above >> 45, it's still there but the rumble isn't quite as reverberating and loud. >> It seems to kind a mellow out some at about 50. >> >> There is no loss of power what-so-ever and like I said, the tranny shifts >> nice and smoothly. Also should note that it has 2 brand new axles on the >> rear as well as all bearings and what-not. There is no weird feelings or >> thumping noised when turning or anything either. >> >> If anybody has any idea what it could be, please let me know!! >> >> Thanks! >> >> Be blessed, >> ~Annie >> > >
Have something to add on this topic today? Revive this thread in the forum »