1. Attachments are working again! Check out this thread for more details and to report any other bugs.

vacuum actuator for HCAC hack: approx dimensions/volume?

Discussion in 'Generation 1 Prius Discussion' started by pmc, Oct 22, 2022.

  1. pmc

    pmc Junior Member

    Joined:
    Oct 13, 2022
    17
    1
    0
    Location:
    Chicagoland
    Vehicle:
    2002 Prius
    Model:
    N/A
    Last year nimblemotors and Soren Lorensen figured out how to "trick" a gen1 into believing that all is well with the HCAC actuator on the co$tly and now scarce original exhaust.

    thread: Tricking HCAC codes into going away? | PriusChat

    The theory is that the volume of air moved in/out of the actuator matters. The Goldwing parts on ebay aren't $7 anymore. Maybe Prius drivers have multiplied demand in the last year?

    Can anyone provide approximate dimensions or volume for HCAC actuator, the Goldwing part, or another part that's working? That might help with selecting viable alternatives.

    Considering the value of the solution, I'm thinking more about local source than cost.
     
    #1 pmc, Oct 22, 2022
    Last edited: Oct 22, 2022
  2. Stock808

    Stock808 Junior Member

    Joined:
    Oct 12, 2021
    21
    5
    0
    Location:
    Hawaii
    Vehicle:
    2001 Prius
    Model:
    N/A
    I think it’s more forgiving than we think. I’ve used a balloon in the past with a sprinkler head.

    I suppose if you find something that has enough expansion capability it’s fine.
     
    #2 Stock808, Nov 12, 2022
  3. pmc

    pmc Junior Member

    Joined:
    Oct 13, 2022
    17
    1
    0
    Location:
    Chicagoland
    Vehicle:
    2002 Prius
    Model:
    N/A
    Yeah, nimblemotors in that thread also reported success with a sprinkler head, which I don't have, but also said:
    and
    So I'm looking for some rough estimate of size/volume to look for.

    In the same thread this question went unanswered:
    ...which I'm also wondering about because that might be the easiest thing for me to find.
     
    #3 pmc, Nov 22, 2022
  4. pmc

    pmc Junior Member

    Joined:
    Oct 13, 2022
    17
    1
    0
    Location:
    Chicagoland
    Vehicle:
    2002 Prius
    Model:
    N/A
    I tried a distributor vacuum advance. It didn't work.
    So, apparently bigger than that.
     
    #4 pmc, Nov 28, 2022
(You must log in or sign up to post here.)