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Thread: EGR Valve

  1. #1
    DX User
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    EGR Valve

    Is there any difference in the EGR valve for the 3rd and 4th gen Accords?

    I work at a part store and the only "new" EGR valve they had in our area was for the 4th gen Accord, and even those are being phased out.

    As far as I can see.... they use the same part # for gasket and have a similar 3 wire connection (the biggest difference is the plug.)



  2. #2
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    Re: EGR Valve

    So I did the swap and everything worked as is should.

    After determining the values of open and closed ohm rating to be identical I decided to proceed take the wire cutters to a brand new 4th gen EGR valve and solder on my OEM plug.

    It was actually pretty easy, the only snag I ran into was getting a direct shot on the mounting nuts with a socket. After a few attempts I decided to thrash the old part by twisting and bending the top portion of the valve out of way. It was a mangled mess, but at least I was able to break the old nuts loose without rounding them out (however, I was now committed without really knowing the status of the old part.)

    After looking at the bottom of the old EGR I could tell you I made the right decision (it was so full of crud). Any car that has 300K miles or more can really benefit on doing this job. The car runs and idles SO much better.

    So there you are.... a EGR valve from a 4th gen Accord works just fine on a 3rd gen Accord LXi. Hope this helps get some of you guys out a jam if you're looking for NEW parts for your classic Accord.

    TIP: The center (white) wire on both plugs is common, and the two outer wires give values. Green wire is around 2.4ohms and the yellow wire is 1.0 ohms in closed position. You can apply vacuum and the ohm values will be green wire 1.0ohms and on the yellow wire 2.4oms
    note: The green wire was the constant between 3rd and 4th gen ERG's parts (in my case), however, no big deal, just match the plug to give the correct signal

  3. #3
    LX User Fixedit's Avatar
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    Re: EGR Valve

    Great info, I appreciate you taking the time to test and venture to the 4th gen EGR valve!

  4. #4

    Dr_Snooz's Avatar
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    Re: EGR Valve

    Is it Sticky worthy guys? He even provides the pin-out and signal values.
    Dr_Snooz

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


    1989 Honda Accord LX-i Coupe, 220k miles, MT swap, rear disc swap

    Shop manual downloads available here: CLICK TO VIEW

  5. #5
    LX User Fixedit's Avatar
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    Re: EGR Valve

    Id say yes, who knows how useful this could be a few more years down the line. These things are only getting older

  6. #6

    Dr_Snooz's Avatar
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    Re: EGR Valve

    Anyone else?
    Dr_Snooz

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


    1989 Honda Accord LX-i Coupe, 220k miles, MT swap, rear disc swap

    Shop manual downloads available here: CLICK TO VIEW

  7. #7
    LXi User InAccordance's Avatar
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    Re: EGR Valve

    agreed
    Originally posted by ShiRen:
    Nice car or not, nobody likes losing a race to an old 4 door Honda.

  8. #8

    Dr_Snooz's Avatar
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    Re: EGR Valve

    Done.

    Nice work Trent. Thank you!
    Dr_Snooz

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


    1989 Honda Accord LX-i Coupe, 220k miles, MT swap, rear disc swap

    Shop manual downloads available here: CLICK TO VIEW

  9. #9
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    Re: EGR Valve

    Is there any way to get those bolts off without mangling the old part?

  10. #10
    DX User BlueTech's Avatar
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    Re: EGR Valve

    Quote Originally Posted by profquad View Post
    Is there any way to get those bolts off without mangling the old part?
    Yes. Standard (short) socket with an extension. The socket sits below the diaphragm and extension is skinny enough to pass by it. Depending on your socket length, you may need to loosen the nuts with the socket and finish removal by hand. You do need to loosen/remove the bolt that is holding the hard vacuum lines blocking the the forward-most bolt and and gently move the tubing out of the way. Or, remove the vacuum hoses and remove the tubing entirely. I had success by just moving the tubing gently out of the way.

    I suggest soaking the nuts in Kroil (or PB Blaster) for a while to loosen them up before going at them. Breaking those studs might ruin your day.
    Attached Thumbnails Attached Thumbnails -egr-jpg  
    1986 Honda Accord LX Sedan, 188k miles

    I really need to take a photo.
    Just picture in your mind a grey '86 Accord LX...
    Along with the dent in the front fender.

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