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Terje Treff

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    17
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About Terje Treff

  • Rank
    Reader (10+ posts)
  • Birthday 05/05/1968

Previous Fields

  • Car Model and Year
    Seville STS 1999
  • Engine
    NORTHSTAR 4.6L V8 VVT (LH2)

Profile Information

  • Gender
    Male
  • Location
    Washington, DC
  1. I might be in a different time zone because our internet service orignates overseas (foreign service).
  2. The PCV valve was just gone, and the rubber connector from the hose was replaced with one that just fit into the hole in the valve cover. I have no idea when and why. So the hose was there and connected so it looked more or less normal.
  3. Hi, basically the rubber plug that was supposed to connect the hose to the top of the PCV valve was (seemingly) replaced with a rubber plug that just fit into the hole. It looked normal from the outside with the hose and connection, but as I realized now I should have been able to see the top of the PCV valve sticking out from the valve cover under the rubber plug - it was not. I`m just not familiar with the past history of the car, and I`ve only had it for less than a year. Technically otherwise it`s in generally excellent condition technically and cosmetically (and recently passed VA Sa
  4. I posted another place in the thread too, but wanted to update you all on this: The PCV valve was missing! There was just a rubber plug where the hose is supposed to connect to the PCV valve. I put in a $2.99 valve from Autozone and the problem disappeared immediately. No smoke. Oil consumption back to normal (I`ve only drive 900 miles since the fix so far without having to refill, but since it was a quart per 100 miles before I`m happy).
  5. I am not an engineer or mechanic, but I have worked as a service advisor for several years. In my country, Norway, like most european countries, we use synthetic on everything, old or new. Never heard of damage due to synthetic oil. Generally non-synthetic isn`t even available at shops. I would be very surprised if your findings indicate damage due to the use of synthetic oil. I would go so far as to say if your research does indicate damage as a result of synthetic oil, the experiment is flawed (issues listed below notwithstanding). I know some engines are
  6. I have the exact same noise in my 99`Seville STS. Only when cold outside upon startup and lasts a minute or two. Definitely comes from the dashboard far left and sounds like an actuator trying to move a flap. Will follow instructions on reading codes and see what kind of codes are there. The Service Engine Soon light was on a few days and disappeared, but didn`t seem to correspond with the noise.
  7. Hi thanks! I Since I`m replacing the head unit I will have line-out for a subwoofer amp. I figured it had to be a free-air woofer but just feeling uncertain about the size.
  8. I would like to replace the rear deck subwoofer in my Seville STS. I`ve been checking crutchfield.com and bought a Kenwood head unit to replace with the Bose factory unit. But they don`t list any subwoofers as a fit for this car. Any recommendations ? I`m open to making some modifications to make a fit. Also, anyone have experience with replacing the door speakers with 6 3/4 replacements ? Crutchfield lists some of them as fitting my car. T.
  9. This is very interesting and I like the scientific approach. I really look forward to seeing more on this.
  10. I am not an engineer or mechanic, but I have worked as a service advisor for several years. In my country, Norway, like most european countries, we use synthetic on everything, old or new. Never heard of damage due to synthetic oil. Generally non-synthetic isn`t even available at shops. I would be very surprised if your findings indicate damage due to the use of synthetic oil. I would go so far as to say if your research does indicate damage as a result of synthetic oil, the experiment is flawed (issues listed below notwithstanding). I know some engines are not "engineered" for synthetic oil.
  11. I am not an engineer or mechanic, but I have worked as a service advisor for several years. In my country, Norway, like most european countries, we use synthetic on everything, old or new. Never heard of damage due to synthetic oil. Generally non-synthetic isn`t even available at shops. I would be very surprised if your findings indicate damage due to the use of synthetic oil. I would go so far as to say if your research does indicate damage as a result of synthetic oil, the experiment is flawed (issues listed below notwithstanding). I know some engines are not "engineered" for synthetic oil.
  12. Thank you guys, I will work on checking these things going forward and report my findings.
  13. Ok,I`ll have to find them and check them. Pointers on where they are located ?
  14. That sounds good. I will more forward in this direction. It`s such a great car, so I really want to get this fixed. I will update as we go along.
  15. Seems to be varying thoughts on dino vs. synthetic. Some people her do NOT use synthetic, and others say DO use it. I am European, and you can`t even buy dino oil anymore over there. Everyone uses synthetic on everything. Clearly there are benefits to the synthetic oil, cleaning properties and better ability to retain the oil film on extreme ends of the temperature range ?
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