Poor Idle and Vacuum

Discussion in '1998 - 2002 Toyota Corolla' started by aaronbw, Jun 3, 2012.

  1. aaronbw

    aaronbw New Member

    I just replaced my 2002 corolla engine with a junkyard engine from a 2003 corolla. now the engine runs rough at idle and the brake boost doesn't work at idle. it sounds like a vacuum leak or poor vacuum. Any suggestions?
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  3. OP

    aaronbw New Member

    I was looking on another forum and I found out that my serpentine belt was too tight. I had used the tensioner form the 2003 and it was a little too tight. I guess I should have known.

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