GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER
Results 1 to 3 of 3
  1. #1

    Default 1984 C10 alternator check

    I have a 1984 Silverado C-10 with a 350 4b with A/C. Can I check the alternator by cranking it up and taking the neg. battery wire loose?

    Thanks

  2. #2
    Sr. Engineer
    Join Date
    Dec 2011
    Location
    11-22-boogie woogie avenue
    Posts
    308

    Default

    Well yes and no . Not good to do this mess up a diode ect. Will still run.. if charging some... but is it charging enough 14.5 volts
    Could take to auto parts to test . Or get a meter can check at battery should read at least 14.5 .

  3. #3

    Default

    Quote Originally Posted by dipstick View Post
    Well yes and no . Not good to do this mess up a diode ect. Will still run.. if charging some... but is it charging enough 14.5 volts
    Could take to auto parts to test . Or get a meter can check at battery should read at least 14.5 .
    I took the alternator off and took it to auto parts store, actually to 2 stores and both tests said the alternator was good and tested at 14.5 volts. I put the alternator back on the truck and tested it at the battery. The reading would fluctuate from 11 volts to 14.3 volts. Increasing the engine speed did not raise the voltage over 14.4 but the voltage did stay around 14.4 while the engine was running at a higher rpm. I will check the battery next.

    Thanks again..

Similar Threads

  1. 1984 C/K 10 4WD Big Time Gas Hog???
    By Old-4WD in forum Chevy C/K Truck Forum
    Replies: 2
    Last: 11-30-2011, 08:28 PM
  2. 1984 chevy c10
    By boogsdaddy in forum Chevy C/K Truck Forum
    Replies: 1
    Last: 10-15-2011, 12:23 PM
  3. 1984 Suburban
    By ogrebk in forum Member Introductions
    Replies: 2
    Last: 09-03-2011, 03:01 PM
  4. Value of a 1984 C10
    By tlrich in forum Chevy Truck Tech Forum
    Replies: 0
    Last: 04-06-2011, 12:00 AM
  5. WTS/WTT 1984 Camaro Z28
    By glamisfanatic in forum General Classifieds
    Replies: 0
    Last: 03-13-2009, 12:24 AM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •