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    VWVortex


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    Thread: 1.8T engine noise - rhythmic ticking.

    1. Junior Member
      Join Date
      Jan 8th, 2008
      Location
      Mechanicsburg, PA
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      31
      Vehicles
      2000 Passat, 2000 A4, 2001 Cabrio
      07-23-2012 09:10 PM #1
      Any ideas on what is causing this ticking sound on my 2000 Passat 1.8T? The sound is very noticeable when sitting in the car with the windows down. The audio only picked it up very faintly Seems loudest towards the front of the engine. If I watch closely, I can see the belt tensioner moving in time with the ticking. When I put a stethoscope on various parts of the engine, it is very loud on the tensioner, but I would expect a bad tensioner to have a different type of noise, more like a squeal or grinding.
      Any ideas?
      Thanks.
      Jim
      http://www.fototime.com/3C0972254E97EBF/convx264.mp4

    2. 07-26-2012 05:39 AM #2
      this happened to me, i changed the oil with full synthetic and it went away... idk if it was that or something else

    3. Semi-n00b
      Join Date
      Jul 17th, 2012
      Location
      St. Petersburg, FL
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      15
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      1999 VW Passat 4cyl 1.8T AEB GLS
      07-26-2012 09:42 AM #3
      Was having the same problem and I too changed the oil with full synthetic, started the car, and three seconds later the noise nearly vanished, however it is still slightly there, I can also here my timing chain rub against the chain tensioner, but thats near the back of the engine.

    4. Junior Member
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      Jan 8th, 2008
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      2000 Passat, 2000 A4, 2001 Cabrio
      07-26-2012 09:54 PM #4
      Thanks for the posts.
      I've been using synthetic oil almost since the car was new, so I'm assuming the problem is something else?

    5. Junior Member
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      Jan 8th, 2008
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      Mechanicsburg, PA
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      2000 Passat, 2000 A4, 2001 Cabrio
      07-31-2012 08:13 PM #5
      Your posts prompted me to check the oil level. Much to my surprise, it was below the add mark (I've never had to add oil to this engine in almost 13 years).
      After bringing it up to the full mark, the noise appears to be gone.
      Thank you very much!

    6. Junior Member
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      2000 Passat, 2000 A4, 2001 Cabrio
      08-04-2012 11:01 AM #6
      Guess I was wrong. The noise is still there. Just doesn't show up until the engine is warm.
      I noticed that I can make the noise go away by putting a wrench on the belt tensioner and either increasing or decreasing the pressure on the belt.
      So, I'm assuming it must be one of the accessories that is making the noise? I can actually feel the "ticking"/knocking sound through the wrench on the belt tensioner.

    7. Member Steve in Chicago's Avatar
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      Dec 13th, 2008
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      Chicago, Illinois
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      1999 Volkswagen Passat GLS
      08-04-2012 03:01 PM #7
      I assume you're talking about the serpentine belt tensioner. When you say you can see the tensioner move in time with the noise, which way is it moving?

      Remove the serpentine belt. Inspect all pulleys on that system to be sure you don't have one that is bent or out-of-round. Check to be sure none of them have excessive play in the shaft. Check the action of the tensioner to be sure the bearings are still healthy.
      A science of vague assumptions based on debatable figures taken from inconclusive experiments and performed with instruments of problematic accuracy by persons of doubtful reliability and questionable mentality

    8. Member
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      Apr 16th, 2003
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      02 Jag Xtype 98 Passat Variant
      08-04-2012 08:56 PM #8
      Have the same exact noise. Seems to be coming from the A/C compressor pulley after spending some time trying to track the noise down. Going to eliminate the A/C all together when go K04.

    9. n00b
      Join Date
      Sep 15th, 2013
      Location
      New York
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      99 VW Passat 1.8T 5Speed
      09-22-2013 09:13 PM #9
      Hey guys, i have the same noise coming from the front of the engine it just started today in the afternoon while stopped at a light...the noise is there on idle and even if i rev the engine but it goes away after 2400 RPM...if you fixed yours how did you do it and what was replaced?? Im already thinking on changing the serpentine belt as well as the timing belt since the car has 73000 and the timing belt has been replaced i just bought the car about 3 weeks ago...any input is appreciated.

    10. Junior Member
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      Jan 8th, 2008
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      2000 Passat, 2000 A4, 2001 Cabrio
      09-22-2013 09:47 PM #10
      No, haven't found the source of the problem yet. Still making the same noise a year later.

    11. n00b
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      Sep 15th, 2013
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      New York
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      99 VW Passat 1.8T 5Speed
      09-23-2013 12:48 AM #11
      oh danm...i just came back from driving and my check engine light came on i dont know if its because of the same issue or something else but I'm going to get it scan this week and see whats happening i really want to get it fixed this weekend....

    12. n00b
      Join Date
      Sep 15th, 2013
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      New York
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      99 VW Passat 1.8T 5Speed
      09-23-2013 11:04 PM #12
      so i ran my scanner and got the code p1338 seems to be something with the timing either my timing belt is missing a tooth or my cam position sensor is bad now i have to figure out which one it is...at least i feel confident that im in the right path

    13. n00b
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      Sep 15th, 2013
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      99 VW Passat 1.8T 5Speed
      02-06-2014 12:32 AM #13
      hey, is me again...so few months ago i was a noise which i thought it was same as yours, turns out it wasn't i had to replace my timing belt tensioner and that went great but i definitely have the same noise as yours I've looked at your videos several times and compare it my noise. i also changed my oil to fully synthetic and the noise is still there and also replaced the serpentine belt tensioner and same deal. now I'm afraid that i have a defective tensioner. please tell me you already resolved your issue. my noise goes away when i pass the 2k RPM.

    14. 02-10-2014 02:42 AM #14
      Are you sure its not your purge valve?

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