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Thread: Fast Idle Thermo Valve

  1. #1
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    Fast Idle Thermo Valve

    FITV anyone know were one can be found for purchase? Or an alternate part or modification? I have an 89 LXi in need of one. thanks



  2. #2


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    Re: Fast Idle Thermo Valve

    New one I have not see in a long while. I breezed thru rockauto and didnt even see a listing at this time.
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  3. #3

    Dr_Snooz's Avatar
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    Re: Fast Idle Thermo Valve

    There's one in the Pick-N-Pull in San Jose, CA. I was just there this morning.

    Dr_Snooz

    "I like to take hammers, and just break stuff, just break stuff." - Beavis


    1989 Honda Accord LX-i Coupe, 240k miles, MT swap, rear disc swap

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  4. #4

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    Re: Fast Idle Thermo Valve

    I'm trying to find an alternative for this part but haven't found anything yet. I did not see any new or refurbished ones anywhere online.

    1988 Honda Accord LSDX-I

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    Re: Fast Idle Thermo Valve

    yeah, here in San Antonio i go to my local pick and pull weekly...need to expand my search into other local junkyards.

  6. #6


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    Re: Fast Idle Thermo Valve

    https://www.hondapartsnow.com/genuin...0-pj0-a61.html

    If 16500-pj0-a61 is ours; not sure if the pictures are correct.






    when I look I see alot for the CRV/integra 16500-P0A-A00....and I think the D series ones all look like this.

    Last edited by Oldblueaccord; 04-10-2022 at 05:11 PM. Reason: added info as I went
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  7. #7

    Dr_Snooz's Avatar
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    Re: Fast Idle Thermo Valve

    Quote Originally Posted by conozo View Post
    I'm trying to find an alternative for this part but haven't found anything yet.
    It's gonna be tough. There weren't many mechanical fast idle controllers made before everyone went to total electronic control.
    Dr_Snooz

    "I like to take hammers, and just break stuff, just break stuff." - Beavis


    1989 Honda Accord LX-i Coupe, 240k miles, MT swap, rear disc swap

    Shop manual downloads available here: CLICK TO VIEW

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    Re: Fast Idle Thermo Valve

    yeah for the 89 LXi its the top pic...

  9. #9


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    Re: Fast Idle Thermo Valve

    Other idea is if you think yours is faulty is block off the holes for the time being.
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  10. #10

    conozo's Avatar
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    Re: Fast Idle Thermo Valve

    I'm not seeing any mechanical FIV replacements but I had an idea i am investigating. I wonder if the throttle body can be swaped with a newer unit, one that has the EACV or FIV mounted directly on the throttle body. Then we could block off the original FIV and/or EACV ports.

    It looks like these engines B16 B18 H22A F22A share a similar throttle body bolt pattern. Not sure if its exactly the same.
    1992-1995 Prelude might be the closest match. They still sell new FIV and EACV for those cars
    https://www.ebay.com/itm/17499543797...oAAOSwoANheFcE

    1988 Honda Accord LSDX-I

  11. #11


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    Re: Fast Idle Thermo Valve

    Quote Originally Posted by conozo View Post
    I'm not seeing any mechanical FIV replacements but I had an idea i am investigating. I wonder if the throttle body can be swaped with a newer unit, one that has the EACV or FIV mounted directly on the throttle body. Then we could block off the original FIV and/or EACV ports.

    It looks like these engines B16 B18 H22A F22A share a similar throttle body bolt pattern. Not sure if its exactly the same.
    1992-1995 Prelude might be the closest match. They still sell new FIV and EACV for those cars
    https://www.ebay.com/itm/17499543797...oAAOSwoANheFcE
    Yeah thats sounds like a great idea!
    1988 Lxi owner since August 1995
    336k miles running strong!
    Now running E85.

    Oldblueaccord <<< MY YOUTUBE PAGE!

  12. #12

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    Re: Fast Idle Thermo Valve

    Buy the gaskets and check the similarity

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    Re: Fast Idle Thermo Valve

    Quote Originally Posted by conozo View Post
    I'm not seeing any mechanical FIV replacements but I had an idea i am investigating. I wonder if the throttle body can be swaped with a newer unit, one that has the EACV or FIV mounted directly on the throttle body. Then we could block off the original FIV and/or EACV ports.

    It looks like these engines B16 B18 H22A F22A share a similar throttle body bolt pattern. Not sure if its exactly the same.
    1992-1995 Prelude might be the closest match. They still sell new FIV and EACV for those cars
    https://www.ebay.com/itm/17499543797...oAAOSwoANheFcE
    I was looking at the same thing. It would be a throttle body swap...

  14. #14
    LXi User AC439's Avatar
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    Re: Fast Idle Thermo Valve

    I thought about retrofitting a 90-93 accord FIV to my A20A3 throttle body with an aluminum block as an adaptor to align holes etc. Not sure if anyone has done this before....

  15. #15

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    Re: Fast Idle Thermo Valve

    Quote Originally Posted by conozo View Post
    I'm not seeing any mechanical FIV replacements but I had an idea i am investigating. I wonder if the throttle body can be swaped with a newer unit, one that has the EACV or FIV mounted directly on the throttle body. Then we could block off the original FIV and/or EACV ports.

    It looks like these engines B16 B18 H22A F22A share a similar throttle body bolt pattern. Not sure if its exactly the same.
    1992-1995 Prelude might be the closest match. They still sell new FIV and EACV for those cars
    https://www.ebay.com/itm/17499543797...oAAOSwoANheFcE
    I lined these up and its a negative
    Click image for larger version. 

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    Quote Originally Posted by AC439 View Post
    I thought about retrofitting a 90-93 accord FIV to my A20A3 throttle body with an aluminum block as an adaptor to align holes etc. Not sure if anyone has done this before....
    It may be completely the same besides one of the holes is an oval and the bottom one is lower, good thinking.
    Part number is 16500-PT2-000

  16. #16

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    Re: Fast Idle Thermo Valve

    I just went to autozone and compared ours with an 1992 Honda Prelude 2.2L which is the H22 engine and it matched exactly. Now there are two gaskets and i really don't know which one is which, im guessing the throttle body comes apart in two pieces and thats most likely the gasket that has all the extra weird shapes and not just the plain circle (as pictured below) for the throttle body. im still looking into it.

    The autozone part i selected was a Felpro TBI Base Gasket 60778




    I'd love to try it but we dont have any preludes in the junkyards around here. I think it would work, the TPS (throttle position sensor) may be a different style plug and may have to be swapped out.

    Pic of junk yard throttle body

    Junkyard pic link
    Last edited by conozo; 04-28-2022 at 02:05 PM.

    1988 Honda Accord LSDX-I

  17. #17

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    Re: Fast Idle Thermo Valve

    Quote Originally Posted by conozo View Post
    I just went to autozone and compared ours with an 1992 Honda Prelude 2.2L which is the H22 engine and it matched exactly. Now there are two gaskets and i really don't know which one is which, im guessing the throttle body comes apart in two pieces and thats most likely the gasket that has all the extra weird shapes and not just the plain circle (as pictured below) for the throttle body. im still looking into it.

    The autozone part i selected was a Felpro TBI Base Gasket 60778




    I'd love to try it but we dont have any preludes in the junkyards around here. I think it would work, the TPS (throttle position sensor) may be a different style plug and may have to be swapped out.

    Pic of junk yard throttle body

    Junkyard pic link
    Are you positive that you got the h22 gasket? The prelude came with the sohc f22a also in the prelude s model, which uses the 60778, as does the a20, afik the h22 uses the 60973. The fiv is mounted on the intake, similar to ours, on the f22, and on the throttle body on the h22. The throttle body you linked looks like the f22 part and there is no fiv on it, whereas the ebay one you linked previously was an h22, it said it in the description and if you look at the back side it pretty clearly uses that 60973 gasket, and it did have the fiv on it. I don't see any reason to swap on the f22 tb. The fiv on the f22 might be easier to find though, it came in 4th gen accords, it just needs adapted.

    Here is the diagram for the f22 prelude
    Here is the diagram for the h22 prelude

    I got the 60778 gasket turned around, so this pic should be a good comparison now and I added part numbers and the crv gasket. I cant say the dimensions are 100% accurate, but it still looks like the bolt holes are slightly off in the 60778, cant scale it to fit at all. If you wanted to search junk yards you could also look for b series cars. I think the crv, which uses a 60979 gasket is the same dimensions as the 61067, might it a lot easier to find parts.


    Also... couldnt we just swap intakes to a b series?
    Last edited by ShiRen; 04-29-2022 at 10:09 AM.

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