Strange Noise

Since yesterday when I go to start the car in the morning, It starts up fine but after its on for a second I hear a strange rumbling type of noise coming from the back for about 25 seconds then it stops it sounds like its near the muffler or something I have no idea.

Since yesterday when I go to start the car in the morning, It starts up fine but after its on for a second I hear a strange rumbling type of noise coming from the back for about 25 seconds then it stops it sounds like its near the muffler or something I have no idea.


--I'm Sorry . I forgt sound direction...

After 90 000 km I have the same problem .
It doesn't occured by summer. Only autumn untill spring. The dealer says :"It's Ok". I added oil (WD-40) to alternator ant the noise sounds 2-3 seconds now. I need repeat it every 5000 km ,because it starts again.

Maybe a bearing in the alternator (?)

Jeremy

im no mechanic but isnt the aleternator under the hood? how could something up in the front produce a noise in the back by the tailpipe? im confused...

^^ your 100% right. Most likely coming from the back and sounds like ratling is your exhaust. Your exhaust is hanging from rubber and after time they were down just like engine mounts causing more vibration. Get it checked out and if that's all it is I wouldn't worry about it.

ohh now its starting to make sense, lol. thanks a lot man.