Site News - 1/3 Member of the Year: DougM
Date: 6 Dec 2006 12:35:54 -0800
Subject: Re: 97 9000 Turbo: Ticking in Engine Compartment wrote: > wrote: > > I've read a few posts and answers about this, but am still not sure > > what it is. Symptoms: Ticking that I can hear in the cabin, coming from > > the engine compartment, and from outside with hood closed. Can't always > > hear it so well when I pop the hood because of the engine noise. Can't > > really hear it at speed, probably also because of other noise. Can hear > > it best when idling or going slow. Ticks about 3 or 4 ticks per second. > > When I gently press accelerator ticking stops for about 1 to 2 seconds > > then resumes.Ticking doesn't speed up as I continue depressing > > accelerator. Taking advice from previous posts about this I looked for > > where it was coming from with a stethoscope; maybe coming from fuel > > injectors but I really cant tell with other sounds. Sounds like it > > might be coming from area around rear pulley of surpentine belt, but > > can't tell about that for sure either. Definitely coming from passenger > > side though. If I put my ear to the passenger side fender it's loud. If > > I try that on the driver side: nothing. Also... comes and goes - > > doesn't do it all the time. It may be ticking when idling after > > driving, I stop for a couple of minutes and it doesn't tick at first > > when I start it up. I originally heard this about six weeks ago and it > > came and went since then as well. Seems like I had the same symptoms > > once on a previous 9000. Any thoughts after this overly detailed > > description of symptoms, aside from psychological analysis of neurosis? > > I'm very sure I have the answer for you. My '97 9000 had the same > noise, which I noticed just after I bought it used. The sound was > coming from the same location as yours, and stopped when you gave it a > little gas. I ran across this post from a BMW owner who had what > sounded like the same issue > . And I took of the passenger fender liner, felt the evap canister > control/puge valve/solenoid while running, and yes, that was it. I was > going to isolate it, but then after a couple of months it stopped > ticking completely. I hope this helps. I think you are right! It makes sense, because when I put my ear directly on the passenger fender the ticking is very loud (like sound source is in direct contact with the metal); much louder than I would expect if the problem were with belts or pulleys, or the injectors. Thank you very much, I really appreciate your help with this.

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