Parking brake and speed sensor

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by killalol, May 19, 2022.

  1. killalol

    killalol Bobtail Member

    Apr 15, 2022
    Hi there, I recently purchased a 1996 peterbilt 377.
    I’m wondering why when you push in the parking brake , it doesn’t release until you hold the service brake all the way down for about 3 seconds. Is this normal or is there something I should look for That is wrong.

    I also got the check engine light with a code 241. I recently changed the speed sensor and the harness but it still has the Check engine light . After I changed it my accelerator would accelerate all the way without being touched but haven’t had that happen again. What should I do?

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