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Strange Noise at startup

Discussion in '2nd Gen. Tacomas (2005-2015)' started by dave6558, Mar 17, 2010.

  1. Mar 17, 2010 at 4:49 AM
    #1
    dave6558

    dave6558 [OP] Member

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    rmote start. undercarriage backup lites, soon to have heated mirrors and signals
    I have a '10 crewcab trd sport longbed. It makes a strange noise. Most times, shortly after startup, and I think it has to be in gear, you can hear a servo noise or small electric motor noise that lasts about 2 seconds. I don't think it happens again until the next startup-----and it doesn't seem to happen every time---(I only have 200 miles so IDK), This seems to come either from the firewall or behind the glove box. Any ideas ??? Thanks in advance.
     
  2. Mar 17, 2010 at 5:43 AM
    #2
    newengland

    newengland small /= slow

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    Alpine Supercharger, DT header, Gibson exhaust, URD short-shifter, Hellwig anti-sway bar, backwards helper-leaf traction mod
    Part of the Emissions control includes a blower that pumps air into the exhaust to get the cat up and runing faster. It sounds like a little motor, and when it turns off you will hear a 'whoosh' sound if the radio/engine is quiet enough. This sound like it could be it?
     
  3. Mar 17, 2010 at 5:54 AM
    #3
    dave6558

    dave6558 [OP] Member

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    rmote start. undercarriage backup lites, soon to have heated mirrors and signals
    could be----i've not heard the woosh but i'll check it out. This sounds like a little servo motor zzzzzz then its gone. It happens so fast it's hard to pin it down. But I'll listen a little more carefully today. THANK YOU
     
  4. Mar 17, 2010 at 5:59 AM
    #4
    Zombie Runner

    Zombie Runner Are these black helicopters for me?

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    maybe the fuel pump.
     
  5. Mar 17, 2010 at 6:10 AM
    #5
    BeefTaco

    BeefTaco WESTern Alliance: NORCAL COAST

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    More than likely what you are hearing is the ABS system going through a self check mode on start up and it is normal. The pump is mounted in the engine compartment near the firewall behind the glove box.
     
  6. Mar 18, 2010 at 4:28 AM
    #6
    dave6558

    dave6558 [OP] Member

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    10 TRD Sport
    rmote start. undercarriage backup lites, soon to have heated mirrors and signals
    thanks guys., I found another link that pretty much describes my exact noise and confirms it the abs. thanks again
     
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