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  1. passat v6 runs rough, lots of codes

    B5 Garage
    Ive been helping my father work on a awd V6 passat that he bought as a third vehicle. the car seemed in decent shape when he bought it. I've owned a lot of 1.8t's and VR6's...but i'm not overly familiar with the 30V. I'll start from the beginning, in case i'm missing the common link to all...
  2. Intense jerk while accelerating, now rough shifts and CEL+ASR light on P0101

    New Member Introductions
    Hi all, I have a 2003 VW Passat 1.8T AWM engine FWD Automatic, 138k miles. I was getting onto the highway behind a semi and had to floor it to merge, upon accelerating, the car clunked very hard once and both the CEL and ASR lights now remain lit indefinitely. The car also shifts QUITE rough...
  3. 03 1.8t passat rough idle

    Volkswagen Passat B5 Discussion
    So im at the point that I'm ripping my hair out. My sons car will idle rough. no codes no engine light no vacuum leak. I have smoked it 10 times replaced check valves pvc coils changed vacuum lines I just cant figure it out. runs like a raped ape otherwise. any ideas would be very helpful. I...
  4. Starts, runs rough but no go

    B5 Garage
    Getting on the highway and got check engine, flashing check engine and limp mode. Shut it off and started again but wouldn't come out of limp mode. Seemed really labored to move when I let the clutch out so I opted to stop trying. Pulled the following codes. I'm leaning toward spark plugs...
  5. 2003 GLX 2.0 Passat Wagon Starting to Idle Rough

    B5 Garage
    I bought this car (second 2003 GLX 2.8 [typo in title and can’t change] wagon) last year with 90k miles. It’s run well, but has been using oil. I just changed my oil last week and have heard a loud clunky sound twice when trying to start. It’s a horrible sound, but then the car starts easily the...
  6. P1519 Running Rough

    Volkswagen Passat B5 Discussion
    Hey- My (new to me) B5 Passat GLX just threw the code P1519. I'm trying to figure out first steps and to see if I can fix this myself (I have a little bit of experience with a Honda Odyssey and a B6 Audi A4, but brand new to the B5 Passat). It does run rough and the cel has occasionally...
  7. Rough Idle and "Pressure Drop between Turbo and Throttle Valve." Many solutions alrea

    Volkswagen Passat B5 Discussion
    Rough Idle and "Pressure Drop between Turbo and Throttle Valve." Many solutions alrea My car (stock 2003 1.8t) has been having misfiring issues recently. Replacing the coils and plugs didn't resolve the issue. I plugged in my vagcom to see what's up and saw some expected misfire codes as well...
  8. 2001 1.8t - Rough Idle/Stumble When in Gear

    Volkswagen Passat B5 Discussion
    Has anyone experienced and diagnosed a similar issue? Our Passat has 204k miles and runs well except when you stop at an intersection (or other stop), the engine shakes a bit and sometimes stalls. If you put it in neutural gear, the stutter smooths out. I had a vacumm gauge on the manifold...
  9. Torque converter making noise starting rough now won't start at all

    New Member Introductions
    2003 Volkswagen W8 4.0 torque converter making noise and giving camshaft position sensor code I just bought it a month ago and now it won't start at all
  10. Rough Idle in drive/ Can't seem to pin point. 1.8t

    B5 Garage
    Hello, first post on these forums. Anyway I have a 2002 Volkswagen Passat Wagon 1.8T and even since i bought he car its driven super smooth but idles in drive with a bad vibration. Yes only in drive. What I've done so far. - All spark plugs - All coil packs - Had a engine code for catalytic...
  11. 2003 Passat rough idled and died, now won’t crank over

    Volkswagen Passat B5 Discussion
    I want to start by thanking everyone for help in advance. So the whole story. We bought the car, 2003 Passat 1.8t, with a bad oil pump. Long story short we ended up replacing the motor. Well my father in law cause I’m less than confident doing so in a VW. Put new timing belt and tensioners in...
  12. Rough and Oscillating Throttle

    Volkswagen Passat B5 Discussion
    All, I've got a 2003 VW Passat 1.8T AWM. Last week I started to get a rough idle. I thought it was my pedal going out (and it still might be) but reading online pointed me to a vacuum leak. I started checking for cracked hoses and by just squeezing with my fingers I broke a vacuum elbow and...
  13. Rough deceleration

    Volkswagen Passat B5 Discussion
    Hey everyone, been looking thru posts trying to find a similar issue but no luck. Im in an 02' passat awm. Car starts and drives fine but when decelerating the throttle kinda lurches and the car tries to stall though its never died yet. Guage normally reads 18-20 vac but currently reads between...
  14. Rough Idle, Blinking CEL, no power please help!!!

    B5 Garage
    So I bought my Passat back in June for $500. Its a 2001 with the AUG 1.8T and it has 193,420 on the odometer. I drove it home (about 8 miles from town) back in June and it ran fantastic! The next day came and I hand washed her and got her a shined up and I went to start it and it started with...
  15. AEB 1.8t misfire, rough running etc.

    B5 Garage
    Coming in for advice because I've been battling this thing for a couple of weeks.... The engine is an AEB from a '98 Passat swapped into a '75 VW Bus. Engine was gone through before installation, new gaskets (including head), new seals, timing chain tensioner, timing belt. Didn't mess with the...
  16. Rough Idle - What did I do? Diesel sounds and squeaks - video link included

    Volkswagen Passat B5 Discussion
    https://youtu.be/rbaN-pq86cs I recently picked up a decent running B5.5 Passat Wagon. I've done a couple maintenance items, with a few more to go. Over the weekend I swapped the three easy vacuum lines, but didn't secure them. That and the TSI coilpack/spark plug swap made a big difference...
  17. rough idle after replacing O2 sensor

    Volkswagen Passat B5 Discussion
    I replaced pre-cat passenger side O2 sensor on a 2002 Passat V6. There are three connectors on the firewall, Green, Brown and Black. Since the new sensor had a black connector, I plugged it into the black socket on the firewall. When I started the car it ran very rough, I ran the car for...
  18. 2005 Passat running rough sometimes

    Volkswagen Passat B5 Discussion
    Greetings all, looking for some direction on my dad's 2005 Passat. It has an intermittent rough idle on cold starts. He says you can turn it off and restart it and its fine. He had it in for some service at a VW dealer a few months ago and they read the codes P0300 P0301 P0302 P0303 P0304 and...
  19. Rough idle, pulling all of the p300,1,2,3,4 codes and found broken valve, please ID

    Volkswagen Passat B5 Discussion
    So rough idle on my 2004 passat 1.8t, especially in the AM. Been getting P300, P301, etc codes to my OBDII. Was planning on changing plugs this weekend, but while taking cursory look at motor, I spotted this: Imgur: The most awesome images on the Internet I can't seem to get the two ends to...
  20. Rough idle and hesitation under load at low RPMs

    B5 Garage
    A little background: I have a 2003 Passat 4motion wagon with the ATQ (V6) engine which I've owned since 72,000 miles. New plugs (NGK) and air filter at 91,000. Valve cover gaskets showed signs of leaking at that time, with oil pooling in the plug holes. Timing belt and water pump were done at...
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