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E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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  #1  
Old 03-21-2010, 05:17 PM
markjo159 markjo159 is offline
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Odd Noise on Start Up

I wouldnt think anything of this, other than the fact that I have heard this noise on start up 3x in the past few days. The weather has been warm (50+ degrees), so I dont think that the oil weight is part of the issue.

The noise sounds more like a scraping / slurping from an empty cup with a straw. I originally thought it came from the engine bay, but tonight I heard it coming from under the car (had door open).

Basically when I first heard the noise, I stalled the car while trying to back into a main road, this happened when I re-started the car. The other instance was last night, and then today while I was playing with the HVAC controls.

Could this be my fuel pump going out? (semi-educated guess)

Mark
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Old 03-21-2010, 06:27 PM
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crisscross crisscross is offline
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Fuel pump is in the tank IIRC, so you could pull up the rear seat and listen there for some help.
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Old 03-21-2010, 06:33 PM
markjo159 markjo159 is offline
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Thanks.... any other ideas as to what that sound could be? -- Heard the noise again (after the car has been sitting for a few hours)... Friday the sound happened while running errands (so it was warmed up).

Last edited by markjo159; 03-21-2010 at 07:03 PM.
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Old 03-21-2010, 09:15 PM
mksu19 mksu19 is offline
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Mein Auto: '05 325it / '01 Audi S4
It could be as simple as a belt tensioner! They too can sound "slurpy" when bad.
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Old 03-22-2010, 07:02 AM
markjo159 markjo159 is offline
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I really need to make a recording of the sound... but the problem is I never know when its going to do it....
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Old 03-22-2010, 08:22 PM
mksu19 mksu19 is offline
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When my tensioners went bad, it did it intermittently at first. It was a combination of scraping, screeching and slurping noise. It was unpredictable when it would do it but it was always during a time when I didn't want it to act up. It's a cheap fix so I'd go ahead and start with that.
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Old 05-31-2015, 09:25 AM
Luis Durazo Luis Durazo is offline
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Mein Auto: 1996 328I
I believe I'm having the same issue with my 328i. I got under the car it seems to be coming from the torque converter area. I have posted a thread under noise at torque converter/flywheel area. Hopefully some one out there has came across this issue.
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