VW Forum banner

mk4

  1. Engine problems 2004 1.4L BCU- please help

    MK4
    Hi all, I've got a 2004 1.4L 16v BCU engine and it starts fine when its cold but then after even a short drive when I turn it off and on again it starts to do serious hunting. It sometimes idles as low as 400RPM and stalls. There are no problems when starting to drive and has no issue with...
  2. 2004 GTI VR6 MK4 P2177 System too lean off idle bank 1

    MK4
    Hi, I have a 2004 GTI VR6 and I haven't driven the car for about a year now. I recently have been trying to diagnose the car and the last time I drove it before it broke down there was a severe coolant leak; however, I couldn't see it because my hood latch was broken. The cause of the leak ended...
  3. Intrument Lighting Not Working After A/C system replacement

    MK4
    A few weeks ago my A/C system quit working on me in my '04 Jetta TDI so I replaced mostly the whole system (everything minus the compressor) meaning that I had to pull the dash out and pull everything out of the car. After putting everything back together and connecting everything back up...
  4. Mk4 130HP ASZ

    MK4
    hey guys I have a mk4 tdi 130 hp I will open the engine I will change the valves and I was thinking of opening more inputs and outputs of the engine and manifolds for more hp. There may be problems if we do
  5. Golf 130HP ASZ

    MK4
    hey guys I have a mk4 tdi 130 hp I will open the engine I will change the valves and I was thinking of opening more inputs and outputs of the engine and manifolds for more hp. There may be problems if we do
  6. Mk4 1.8t building no boost at all

    MK4
    Hey everyone I’ve got a 2002 gti 1.8t That has a unitronic stage 2 tune. Not sure on the engine miles but compression is a little low at 140-150 on all cylinders . The car runs fine once it’s started once I start accelerating I have very little power and it seems as if I’m building no boost at...
  7. Manual swappin an auto

    MK4
    I have 2 mk4 jettas both are 2.0’s. One is clean rust free with a bad motor and auto trans, and one is beat up but has a good motor and manual trans, I’m trying to put the manual motor and trans into the auto body. What else would I need to do ?
  8. Fuel filter move to engine bay

    MK4
    Hey everyone, I recently saw an old mk.1 and noticed the fuel filter actively pulsing the fuel in the engine bay! I know it is somewhere under the control arm in our mk.4. im creating this thread to see if anyone has experience in bringing that fuel filter up to the top of the bay maybe around...
  9. Car not starting..

    MK4
    Hello, So I’ve been recently having an issue with my GTi (185kM) not starting.. it cranks, but doesn’t kick over. I’ve replaced the battery, Fuel pump (which does prime), the spark plugs, the air filter, to now changing the alternator. After changing everything I’ve now got a stored P1289...
  10. 04 gti shifter stuck

    MK4
    As I was driving along one day the car just decided to refuse to even wiggle in neutral no first no second no fifth only gears it goes into are 3rd and 4th
  11. PLEASE HELP!! No power to car at all and clicking under dash!

    MK4
    Hi, any help would be greatly appreciated. I have an 04 GTI VR6 and i just put in a brand new battery. Car was perfect for 2 weeks, drove 300 miles yesterday! This morning i get in the car, turn the key, everything works as usual. Go to start the car, and everything goes black. I now have no...
  12. codes 17971- Quantity Adjuster N146 Lower limit Reached, 17571 and 17946?

    MK4
    Greetings all! This will be my first post here so I suppose i should start off by saying that I have a VW Golf MK4 00-01 1.9 tdi with the engine code AGR. Long story short I chipped my car to stage 2 and things were working fine and the car ran smoothly for about half a year and then I felt...
  13. 03 jetta 1.8t help with engine codes

    MK4
    Hey guys, Not sure if anyone has experience with this so I bought a 03 jetta 1.8t my buddy told me need to do the timing belt to be safe got it done ran and drove fine before and after it had a over retarded timing code but went away never came back only code that would keep coming back was the...
  14. Cold air intake

    MK4
    Just bought a new mk4 gti vr6 and the check engine light is on the person i bought it off said it was because of the cold air intake so i am going to buy a new one but i was wondering what would be a good one to buy to add a little bit more power to the car
  15. 2002 GTI 337 Edition, 86k Miles, 100% Stock, Clean Title - Rare find!

    For Sale - Vehicles
    2002 GTI 337 Edition for sale - 86k miles. 100% stock. Located in Spokane, Washington. The 337 is a 1.8L Turbo with a 6 speed manual. (yes, SIX speed) Starting asking price at $8500, open to offers. I can provide a link to a large image gallery on request. I love this car and have treated it...
  16. FS: MK4 GTI Rear Euro Bumper w/Molded Rieger Apron

    For Sale - Parts
    As titled. I did the molding work myself and it took me many hours. Some small scratches, especially on the bottom. This is the exhaust-through version of the apron. The apron was glued and screwed on before bondo so it's very sturdy. Local pickup only in San Leandro. Asking $400 obo
  17. Exhaust for VW Jetta 2.0

    MK4
    So my resonator is completely rotted out and my muffler is apparently gone too, according to my ex-mechanic. At this point, what I WANT to do is have someone weld on one of those magnaflow mufflers and some pipe/another magnaflow where the res is because they cost very little on amazon.ca...
  18. Stumped by electrical issue

    MK4
    Hi all, All of a sudden all of my interior lights have failed to work either by switch or by having a door open. They all come on when I release the hatch though. I can't quite figure it out. Any ideas would be appreciated! Thanks!!
  19. WTB:rear ashtray and end caps black mk4

    For Sale - Parts
    looking a black ash tray with the 2 end caps in black for a mk4 text oe call 2523084416
  20. MK4 R-line bodykit back plate thingy

    MK4
    Hello, i have the R-line bodykit for Golf MK4, but i lost the back plate thingy on the rear bumper: It looks likt this: I am wondering where i can buy a new back plante thing or what it is called.
Top