Last post on Nov 10, 2013 at 1:53 PM
You are in the Volkswagen Jetta
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Volkswagen Jetta, Sedan
#4470 of 6655 Rumbling Noises Under the Car
Mar 31, 2006 (10:08 pm)
Greetings all. Don't forget to turn the clock ahead Saturday night before you go to sleep. I own a 1992 Jetta GL - manual 5-speed - air condition - gasoline engine - 4-cylinder - 195,000 + miles on it. Recently, I disconnected the Oxygen Sensor since it was kaput and needed to be replaced but I had to wait a couple of weeks before I could spend the $185 to have it replaced. So I drive around for a week or two with a disconnected OS - bad gas mileage, of course. Then I had it replaced, everything OK now, right? Now, when I first run the car after it's been sitting for a while, or if I turn the car to the right, occasionally, I hear what sounds to me like the muffler making a clearly discernable roaring noise. No, not ear splitting, but you can hear it. After I've torqued the engine a bit beetween gears, the noisy muffler goes away. Sometimes, even when the engine's hot, I may yet still hear that noisy muffler sound again. But soon after, the sound goes away - just like that. This is not an easily repeatable noise, making it difficut for a busy mechanic to troubleshoot. Is this a case of a loose heat shield or maybe a a loose pipe...........or something else altogether? Or maybe the manifold exhaust clips up front in the engine compartment? The car seems to run fine - good gas mileage, shifts fine, etc. The entire muffler system, by the way, was replaced last year, including the catalytic converter. My VW mechnaic told me the muffler system looks good to him. Thanks. Edwardo
#4471 of 6655 transmission probs
Apr 01, 2006 (3:12 pm)
i just traded a '79 gmc jimmy for a '96 Jetta Trek edition and found out it needed a new transmission. anyone know of a cheap repair for -$3600.00? (quoted price at several places) Would it be worth doing? (in Los Angeles)
#4472 of 6655 Re: The Jerking Engine Problem
Apr 02, 2006 (3:43 pm)
I own a 1992 Jetta GL - 5-speed. I have noticed that, when I am in 2nd gear and I am moving at below 12 mph, the engine will begin to jerk, especially noticeable when I go over a bump. As soon as I feel that jerking motion, I let off the accelerator and the engine smooths out. As soon I am moving at faster speeds, the jerking motion vanishes completely. So it appears that, at speeds below 12 mph, I must remain in first gear but I must be careful not to torque the engine too high when it's cold. That's easily done, of course.
#4473 of 6655 Re: The Jerking Engine Problem [jetta92owner]
Apr 02, 2006 (6:18 pm)
It is never good to "torque the engine" when it is cold. Remember that over 60% of all engine wear occours when it is below operating temparture. (It has been shown that engines which are always runnning at temp. last much longer than those which are started cold several times a day.)
With that said, You seem to be describing the symptoms of a cylinder not firing. (running on 3 cylinders) I would first suspect leaky sparkplug wires to cause what you are describing. If new sparkplug wires do not help, try new sparkplugs.
After that, the order of items I would check are;
#4474 of 6655 should i buy
Apr 02, 2006 (9:11 pm)
I am deciding wether i should buy a 2000 jetta glx with 70k or not. I heard they have reliability issues but then again some people really like them. I am a college student and dont have alot of money for repairs, so if this is a car that is very unreliable please tell me thanxs.
#4475 of 6655 Jetta GLS 1997, drivers side lock issue
Apr 03, 2006 (9:26 am)
the locks are not working properly, excuse me, they are indeed working properly, just not from the drivers side door/keyhole.
the key goes in, turns properly, its just the locks dont move up or down, nothing happens when i turn the key.
i can open it from the passenger side, but not the drivers side.
is the the key sensor probably?
can anyone tell me exactly where the sensor is, and where is the best [low price] to purchase these replacement parts?
#4476 of 6655 Re: 2004 Jetta-Transmission slips/jerks 
Apr 03, 2006 (1:17 pm)
You had a problem with jerking when you accelerate? I also have a 2004 Jetta that does this and my warranty is almost up, but my dealership is never any help. You said "they replaced it with a new one" What was replaced?
#4477 of 6655 Re: Knocking noise [gillete]
Apr 03, 2006 (1:28 pm)
I just had that happen to me. I started my car and im not sure if I was still in park or in reverse, but I was reading something and all of sudden I heard a knocking noise. It came from the rear of the car on the passenger side. I have no idea what it was, but it was just a single knock and it happened about 6 times in a couple minutes and then stopped. It scared me because my warranty is almost up and I have been having other problems that the dealership cant seem to do anything about. I've asked around and no one has heard of this before.
#4478 of 6655 40,000 mi service
Apr 03, 2006 (1:35 pm)
I have a 2004 Jetta its a 2.0L, and its time for my 40,000 mile service. The dealership will cost me $500. I dont have a lot of knowledge about cars and I wanted to know what can I do myself that isnt too hard. Is it very much work to replace the spark plugs?
#4479 of 6655 Re: jolting problem? [jenezrow]
Apr 03, 2006 (8:31 pm)
I have a 2003 Jetta (70,000 miles) and it's has been running without any problems until recently. I have been noticing that the car would "jerk" when I am accelerating from a stopped position. When it first happened, it felt like something had hit my car from behind. Just like yours, it is also very inconsistent. When it happens, it only happens three or four times while driving on city streets, just after starting up the car. Then it seems to disappear. I have also noticed that it happens less frequently when the weather is cold. I called the dealership and they said that they can try to diagnose the problem by having a technician test drive it--but again, it doesn't happen all the time. I am bringing it in this week to let them look at it. I will let you know what they tell me.
P.S. My car was fine until the manufacturer's warranty expired at 50,000 miles.