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    VWVortex


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    Thread: Please help... Car runs like poo

    1. Member
      Join Date
      Aug 5th, 2004
      Location
      Jacksonville, FL
      Posts
      222
      Vehicles
      91'MK2 JETTA 1.8T,97 BMW M3, 914 2.0
      03-19-2012 01:32 PM #1
      Ok so I'm having issues.... I have a 2003 A4 Quatrro. The car is hard to start only when hot, 10-12 revolutions before it kind of sputters to life. On a cold start the car sounds like it has a exhaust leak.. that goes away once it warms up. Once running the car develops almost no boost. 2lbs tops at WOT. The car wont rev past 5k either. Feels like the car is in a soft limp mode. I have pulled codes, they are as follows
      PO300 RANDOM MISFIRES-
      PO303 CYL 3 MISFIRE
      PO302 CYL 2 MISFIRE
      PO299 TURBO BOOST SENSOR/ UNDERBOOST
      PO501 ENGINE SPEED SENSOR
      I have replaces all 4 coil packs (OEM) and spark plugs
      I have replaced the DV
      I have replaced the engine speed sensor (not oem, is that bad?)

      Any feedback would be great thanks

    2. Member Fishbone's Avatar
      Join Date
      Oct 15th, 2002
      Posts
      1,781
      Vehicles
      2012 Routan SEL, 2003 A4 Quattro
      03-19-2012 02:53 PM #2
      One of your check valves may be torn and needs to be replaced.
      I had to replace #4 last year







      http://www.audizine.com/forum/showth...e-Check-Valves

      Hope this helps.

    3. Member
      Join Date
      Aug 5th, 2004
      Location
      Jacksonville, FL
      Posts
      222
      Vehicles
      91'MK2 JETTA 1.8T,97 BMW M3, 914 2.0
      03-19-2012 03:34 PM #3
      Quote Originally Posted by Fishbone View Post
      One of your check valves may be torn and needs to be replaced.
      I had to replace #4 last year







      http://www.audizine.com/forum/showth...e-Check-Valves

      Hope this helps.
      I have replaced 2 of these myself.. I appreciate your pic though that helps tell me where they all are

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