As I was driving to work this morning, I noticed a clicking or "putt-putt" noise that sounded like it was coming from under the car. I figured that something might be dragging on the ground because the noise got louder when I accelerated, but when I looked to see if anything was hanging, there was nothing I could see. A mechanic friend of mine previously remarked that I need a new fan belt, but this noise is not the screechy noise associated with fan belts, and when the car is idling, it's non-existent.. As a woman, I have been ripped off by mechanics more times than I care to remember. I know it's not possible to diagnose a car sight unseen, but I would really appreciate some info as to what it could possibly be. The car has about 70,000 miles.
Mystery putt-putt noise on 2000 Volkswagen Jetta
by CindyV in Oyster Bay, NY on December 29, 2009
ANSWER by Oakman , December 31, 2009
Sorry to hear about your past history with auto mechanics. I know I takes a certain amount of trust to have someone work on your car and if the trust is not there it make things very difficult. As for your sound, what comes to mind is an exhaust leak on your 2000 Volkswagen Jetta. This can be caused by a small hole somewhere in the exhaust system or a failed gasket. I am afraid that again you are going to have to put your trust in your local mechanic to listen to and correctly diagnose your noise.
ANSWER by some guy , January 03, 2010
i agree with the exhaust as the likely noise source. try to diagnose it by capping the exhaust using your hand and an old rag while running at idle (your hand may get a little warm) then listen for a noise of exhaust escaping (maybe even white tailpipe smoke since its so cold). a good exhaust system should not leak anywhere so the built up pressure should be trying to blow the rag off. as for the belt, i think they are replaced soon as part of service intervals. check your book.