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89 idle rpm

Discussion in 'Chevy Trucks' started by Northman, Apr 3, 2009.

  1. Northman

    Northman Senior Member
    from Ohio
    Messages: 201

    89 K1500 V-8

    During the winter my alt was going out and I had set the idle speed up to keep the alt charging. I was able to get the new alt on after removing the stripped out lower bolt later on, but never got around to readjusting the idle rpm.

    Well now I have time and drove it yesterday while it has warmed up and need to adjust it back down bad. Now I cant remember what the idle rpm was? Any of you guys know?

    I am guessing somewhere between 750-1200 idle.
    Last edited: Apr 3, 2009
  2. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Manual trans: 600 RPM

    Auto: 550 RPM in gear.