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Volkswagen Jetta Maintenance and Repair



  • 2003 Jetta GLX

    Every other time I stop at a stop light, my engine will start to hum with a deep loud sound. I can feel the vibration too as if it were a belt vibrating heavily. Also, when this happens, my A/C loses its coolness and if I either let off of my brake and start to accelerate or turn off my A/C the humming will go away.

    Is anyone familiar with this? Do I need to tighten the belt somehow? I opened the hood and looked, but did not see any belts that go to the compressor. I couldn't even see the compressor. This is my first European car and I'm used to American cars where I open the hood and see a serpentine belt and can tighten it right up.

    Thanks for your help.
  • bpeeblesbpeebles Posts: 4,085
    Modern vehicles have a serpentine belt that has its tightness maintained by a spring-loaded "tensionor". There is no human-adjustable components on the serpentine-belt system.

    VWs do not use a "clutch" on the AC compressor like some other vehicles. That is why you do not feel the AC compressor kicking in and out. Instead, the AC compressor is "variable" and changes the amount of freon it pushes based on cooling demand and engine speed.

    Perhaps you would want to check that the AC system is properly charged with freon (or whatever it is charged with).
  • Thanks for the reply. When I'm moving (and sitting still to some degree) the air is ice cold. The only time I notice it blowing warm is when the loud vibration/humming occurs. Do you have any idea why that would be occuring? Thanks.
  • kap216kap216 Posts: 1
    So first my speedometer would go all wacky once in awhile, go up to a 160 mph for instance when i was driving about 80. Now the speedometer sticks at zero and my rpm sticks at zero. Using the other displays in the car, i know that my mileage is not suffering ( I still get around 26 mpg on freeway). What are possible causes? Should I take it to the mechanic?
  • bpeeblesbpeebles Posts: 4,085
    Suspect the wiring to the console. Most likely a ground connection.
  • Hello, I have a 2003 Jetta GLS.

    Today my Malfunction Indicator Lamp came on.

    My car is due for an oil change either before Feb. 2008 or before I hit 33967 miles.

    Currently I have only 333391

    As I was going to take my car in this weekend anyway..does anyone have any idea what may be going on here? The booklet says the emissions and don't drive fast or any steep hills, but I really as you can see don't drive it as much. When I got the car in 2006 it had 22000 miles approx.

    Any insight would be helpful. especially on the how much this would cost approx. I need my car!!

    Thank you! :cry:
  • jodar96jodar96 Posts: 400
    Last year I passed on buying a 2000 Jetta. This year, I am back trying to buy a 2001 Jetta for my son.

    It has 85K miles, manual, with 2.0L engine. The guy says it uses a quart of oil every 1500 miles. The VW dealer says a quart of oil every 1000 miles is normal. It may be normal for a bad design, but it is certainly not normal for a decent engine. My 2001 Mercedes E430 with 93K miles that holds 8.5 quarts does not use ANY oil between its 10K oil change interval, nor does my 93 Ford Ranger with 153K miles.

    My question is this...will this oil consumption get worse with time? or it will remain the same?

    Also I thought the timing belt/water pump replacement is due at 100K. My local VW dealer says pre 2002 it was at 80K. Is he trying to sell me the $700 service or is it truely needed at 80K? I know the timing belt failure is a distaster on VW/Audi engines and I will never take a chance on that.

    Has anybody had timing belt failure before 100K miles?

    One last question.. can I request water pump with metal propeller instead of one with original plastic one? I know there were some water pump failure where the plastic propeller broke in pieces and they ended up in the engine and the radiator.

  • ruking1ruking1 Posts: 18,387
    If it were me, I'd pass,.I also understand 1000 to 1,500 miles per qt is considered "normal". Basically in a 10,000 mile OCI, 1000 to 1500 miles per qt (add 7-10 qts MINIMUM ! ) means you;ll "change oil" over 2 to 3 times!!! My swag is the oil consumption will probably increase.

    I say this as a 03 VW Jetta TDI owner with 107,000 miles looking to go a min of 500,000 miles. Current oil consumption is 1/8 to 1/3 qt (4 oz to 11 oz) in the course of a 25,000 mile OCI. (yes I know the oem recommendation is 10,000 miles)

    03 TDI timing belt changes are at 100k. However this presupposes the bigger bearings and improved belt. So IF the smaller bearings and (non) improved belt is/are used, then yes the lower mileage interval is prudent. This needs to be verified to say one way or the other. No, I have not had T/B failure. I have personally seen 15 or more old belts ( TB/WP jobs). While visual inspection can be deceiving, my own belt changed at 100k looked good to go for another 20,000 miles as a minimum. Also the oem water pump plastic impellor showed signs of coolant seepage. As you mentioned it is way foolish to chance this. Of the belts I have personally seen, there indeed were a few where you " knock on wood" they even made it before the change.

    Yes you can request/get the W/P with metal (brass is best) rather than the "plastic". Laso makes the brass impeller one. Lastest research indicates the Laso, brass impellor is the best. The complication is the water pump is made by a few vendors, Bosch, Graf, Hepu, Laso comes to mind.

    Not to add any more complication, but Laso also makes a "composite" (aka RESIN) impeller (so does Graf. :sick: ). To LQQK at the "composite" aka resin, one side by side with another make's (Bosch makes oem) "plastic" ones does not help much as both LQQK PLASTIC. Please also be aware (sans Bosch "plastic" ones) that a TDI guru that I respect makes an argument that "resin" ones such as Laso, Graf, actually flows coolant better.
  • dfdaviddfdavid Posts: 2
    Late model 1999 Jetta 2L
    Check engine light appeared so I used code reader u380 and found problem with misfire in #4 cylinder. Changed spark plugs and then tried to start engine . no response except when key is turned on, clicks are heard and flashings on control panel are seen. nothing electrical works ie. windows radio Code reader now shows "link error" when used. What could it be ?
  • dfdaviddfdavid Posts: 2
    new model 1999 Jetta 2L
    Check engine light appeared so I used code reader u380 and found problem with misfire in #4 cylinder. Changed spark plugs and then tried to start engine . no response except when key is turned on, clicks are heard and flashings on control panel are seen. nothing electrical works ie. windows radio Code reader now shows "link error" when used. What could it be ?
  • lentelocolenteloco Posts: 5
    what type of freon does a 97 jetta gls use, R-12 or 134A?
  • jeffyscottjeffyscott Posts: 3,855
    I'm pretty sure that by 1997 no one was putting R12 in new cars. .html

    Most '94 and virtually all '95 models use CFC-free R-134a.
  • jodar96jodar96 Posts: 400
    Starting in 1994 all manufacturers were required to start using R134A. Your Jetta uses R134A.
  • jodar96jodar96 Posts: 400
    Thanks for your comments. I said water pump's " proppler" knowing it is a Impeller. I wonder if there is anything can be added to engine oil to slow down the consumption. or one oil brand or slight viscosity variation will slow down the oil useage.

    Are you saying you go 25K miles between the oil changes? Unless you are doing 100% highway driving in 70-90F ambient temp, I am not sure I want that oil hang around in the engine that long.

    If I end up buying this Jetta, I will look for W/P with brass impeller.

  • tony2000tony2000 Posts: 1
    Help! my son has a 2000 Jetta non turbo, starts and runs fine up untill it reaches temp then the check engine light comes on and it shuts the engine down. Have tried to have codes read and it keeps coming up (unable to read) have tried 4 different code readers. Thanks for any advice.
  • ruking1ruking1 Posts: 18,387
    No to both questions to make a long story short. That is one major reason why I would pass on the gasser VW engines.

    Yes I am am saying 25k miles OCI's :shades: Again to make a long story short, a good reason why I got lucky on the 03 TDI. :shades:
  • I will be gone for 4 weeks, Is it OK to leave car in June, outside without starting it?
  • jeffyscottjeffyscott Posts: 3,855
    If it were me, I would not worry about it. I once read a recomendation that if you are not going to use your car for an extended period of time, you should start it and warm it up about once every two weeks. So I would guess going twice that interval just one time would be unlikely to create any problems, especially with it being summer.
  • jodar96jodar96 Posts: 400
    I am buying that 2001 Jetta with 85K miles that uses a quart of oil every 1500 miles. I need to know if any of you out there that have this issue, knows of any oil brand/special weight that slows down this oil consumption beside parking the car in the garage and not driving it.

    It is amazing how VW calls this defect "Normal". I had an 85 Jetta, bought it new, put 180K miles on it. That Jetta never had the oil consumption problem. I wonder what went wrong some 16 years later..

  • woody54woody54 Posts: 1
    My 1997 Jetta Gl code 1582 keeps comming up. Sometimes 422 will come up after I drive it for about 50 miles. Cleaned the tb and mass air flow. 1582 still comes up but the light isn't on. What else can be done to get the code out, and pass emission test.

  • Hello VW people. I just purchased a 2003 Jetta GL with the 2.0 engine. I have never owned a VW before. It has a little higher mileage at 80,000, but has a clean car fax and looks and drives great. Can anyone suggest some maintenance that I might need to get done other than an oil change. Thanks, Paul in Dallas.
  • bpeeblesbpeebles Posts: 4,085
    My 2003 TDI has nearly 100,000 miles... and I fully expect another couple 100,000 out of it.

    *)Clean the "snowScreen" (there is an online movie showing how to do this)
    *)Make certain the foam pads which cause rust have been addressed. (There is a TSB about this)

  • I have the same problem with my 2000 Jetta. Were you able to figure it out?
  • p100p100 Posts: 1,116
    What went wrong? Quality went down the toilet after they started making Jettas in Mexico and started using globally manufactured parts..
  • bpeeblesbpeebles Posts: 4,085
    The reasons for the "oil consumption" issues are complex and described in detail elsewhere. Usually due to poor/improper engine break-in when new.

    In any case, oil-consumption by itself is NOT a problem. Just keep oil in the engine and it will last a long long time. In fact, it can be argued that the oil "changes itself" as you drive.

    Also, there are some things you could do to minimize the consumption.... but keeping a case of oil in the trunk is the cheepest.

    Please keep in mind that VWs have been ASSEMBLED in Mexico since the original beetle.

    HOWEVER: The sources for the components are many. Xmissions come from one country, engines from another. The Mexicans just bolt the components together. You really cannot blame the Mexicans if an engine built in Brazil consumes oil.
  • Hi there!

    I was wondering if anyone got back to you regarding this question... my MIL came on last night as well, and I have no idea why?!?!?!... I have a 2003 Jetta and it has 33000 miles. There's never been anything wrong with it except for an electrical problem that was solved under warranty... but I don't know how much I"ll have to spend if I take it to the dealership ... I check the booklet and it's exactly what you say. Don't drive fast, no Steep Hills, etc.. ugh.. ...any insight?

    Thanks so much for any help! :confuse:
  • bpeeblesbpeebles Posts: 4,085
    If it is just "ON" you are safe to drive your car while you decide the best course of action is.

    If it is "BLINKING" - DO NOT DRIVE because there is immenent danger of bad things happening. (catalitic converter overheating...etc)

    If I were you, I would take car to autoparts store who often can "pull the codes" from the onboard computer for you. (and reset the MIL at the same time)

    This will NOT fix the problem.. .but knowing what code is causing the MIL will go a long way twards figuring out the next step to take.
  • ok i've had this problem for a couple of weeks now, but i dont know what the problem is! After doing a great deal of driving, whenever I have the car at a stop or on idle, there is like a ticking sound coming from the right side. Only thing is, i can only hear it whenever im sitting inside the car, and cant when i have the hood popped. Anyone have a clue? I bought the car at a Dodge dealership and they dont have a clue, Im planning on taking it to a VW dealership to have it checked out. It only has 38,000 miles so i cant see what the problem could be.

    Also, my steering wheel shakes whenever i drive around 80 mph on the highway. Is that normal?
  • ruking1ruking1 Posts: 18,387
    Nothing jumps out at me in your first paragraph. It however can be a number of things.

    Your steering wheel shake is probably a tire or two that is out of balance.
  • kenadelekenadele Posts: 3
    2001 Jetta 1.8L. Trying to replace the fuel filter, but I can not remove the clips on each end of the fuel line. Is there a trick or one of those "special tools" needed?
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