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vacuum leak

Thread in 'Engine' started by Dennis Shelley, Mar 19, 2015.

  1. Dennis Shelley

    Dennis Shelley Active Member

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    Joined:
    Aug 28, 2003
    Location:
    Urbandale, IA
    So the 2001 ST would not idle, symptom occurred all of a sudden. would run good at cruise speed (2,000 RPM). No "check engine" light. Cleaned the throttle plate and intake as far as I could reach. Inspected for any obvious loose hoses and such. To no avail.

    The shop ID'd the problem as the green "O" ring that seals the throttle body to the intake plenum (AKA manifold).

    Be aware, I saw that green "O" ring when cleaning the throttle plate, it was flattened, but did not appear that bad. Would have spent hours tearing into the intake as I had a similar problem years ago when the small "O" rings on the manifold to head went bad.

    All good now, 205,000, bought as a salvage in 2003.

    I'm out , Dennis:haveabeer:
     
  2. Jerry Gerner 2

    Jerry Gerner 2 Well-Known Member 1st Gen Owner V8 Engine

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    Dec 28, 2008
    Location:
    Pittsburgh, Pa
    $1.69 part, nice cheap fix. I replace mine everytime I cleaned or removed my throttle body.:haveabeer:
     
  3. Todd Z

    Todd Z Well-Known Member 2nd Gen Owner V6 Engine V8 Engine

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    Location:
    Suffolk County (Long Island), NY
    :banana::banana::banana:
     
  4. swshawaii

    swshawaii Well-Known Member 1st Gen Owner 2 Wheel Drive V6 Engine

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    Feb 27, 2009
    Location:
    Kailua-Oahu, Hawaii
    Great info! Wish I knew that before I stripped the plastic threads for that inboard bottom bolt. :banghead:
     
    Last edited by a moderator: Mar 20, 2015
  5. Dan Stafford

    Dan Stafford Member 1st Gen Owner 2 Wheel Drive V6 Engine

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    Joined:
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    Louisiana
    Pics?
     

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