P 0410 Secondary AIR injection Pump
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Cadillac DeVille 1985 to 2005 including:
1985-1992 Fleetwood, 1993 Sixty Special, All FWD Forum Discussion, P 0410 Secondary AIR injection Pump in Past Cadillac Vehicle Discussion; I'm about to pull the caddy out from storage next week and last I left it with the PO410 code ...
  1. #1
    blackonblacklac00's Avatar
    blackonblacklac00 is offline Cadillac Owners Fanatic
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    P 0410 Secondary AIR injection Pump

    I'm about to pull the caddy out from storage next week and last I left it with the PO410 code so I know that's one of the things I got to do right away,

    There wouldn't be no vacuum sound on cold starts and the 50 amp fuse will blow every time I change it. So I'm I definitely looking at a pump replacement? Can I cancel out all the other issues related to the system since fuse keeps blowing due to a shortage cause by water? I never had this problem with my other 2 DTS's that had the pump.

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    Submariner409's Avatar
    Submariner409 is offline If it won't run, install a sound system
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    Re: PO410 Secondary AIR injection Pump

    If the Maxi-fuse blows at cold start the AIR pump is seized - from water ingestion due to a baffle cover falling off the pump.

    Inside the LF fenderwell liner.

  4. #3
    blackonblacklac00's Avatar
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    Quote Originally Posted by Submariner409
    If the Maxi-fuse blows at cold start the AIR pump is seized - from water ingestion due to a baffle cover falling off the pump.

    Inside the LF fenderwell liner.
    I replaced the fuse once and cleared the code and it took about 3-4 days for the code to pop back up and pop the fuse, sounds right? So it's definitely a pump replacement? Just don't want throw money at it if that's not it exactly read a lot of other guys on here did and didn't end up solving the problem but the fuse blowing is pretty much a no brainer.

    Do you have the part# to the newer design pump? And best place to get it?

    I remember checking the pump and the cover was cracked up a bit with a bit of water around there.

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    Ranger's Avatar
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    Re: PO410 Secondary AIR injection Pump

    I agree with Sub. The "pump" (more of a blower) is most likely shot. I think I got mine on Amazon, but I don't recall the part number. I think if you get the "kit" it includes the new hoses.

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    blackonblacklac00's Avatar
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    Quote Originally Posted by Ranger
    I agree with Sub. The "pump" (more of a blower) is most likely shot. I think I got mine on Amazon, but I don't recall the part number. I think if you get the "kit" it includes the new hoses.
    I'll try to find out the part number to the newer hose design. If you guys come across it would you mind please posturing it for me?

    Sub and Ranger are my hero's on this site so if you guys agree with each other I have my answer you two have helped me a lot over the years with my other 2 DTS's, I appreciate what you guys have done. Owe you guys a beer and a steak in this lifetime or the next lol

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    Re: PO410 Secondary AIR injection Pump


  8. #7
    blackonblacklac00's Avatar
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    Shipping to Canada is $40 I got to move back to States side asap Rockauto is only $6 cheaper.

    I got a guy I know at a auto wrecker close by that has 3 Devilles and a STS in there with the pumps. ill probably get it for $50 he said if one doesn't work I could swap them tell one works but what if none do lol knowing my luck that might happen.

    Should I go new or used?

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    blackonblacklac00's Avatar
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    Ordered the new pump from amazon today. Does anyone have a diagram how I should be routing the new one?

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    It should have come with a small diagram from the TSB.

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    I'm having the same problem code. My pump comes on and off correctly so I don't know what the problem could be.

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    Quote Originally Posted by KamD450
    I'm having the same problem code. My pump comes on and off correctly so I don't know what the problem could be.
    My pump did not come on at all....is the 50 amp fuse blown under the hood?

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    Re: P 0410 Secondary AIR injection Pump

    It could be a check valve.

    Look the code up here. It has diagnostic help, causes and solutions.
    http://www.obd-codes.com/trouble_codes/

  14. #13
    00 Deville's Avatar
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    Re: P 0410 Secondary AIR injection Pump

    Quote Originally Posted by blackonblacklac00 View Post
    Ordered the new pump from amazon today. Does anyone have a diagram how I should be routing the new one?
    It goes in pretty much the same way as the old design. Except for the snorkel (intake hose) is routed up between the inner and outer fender. Just above the horns there is an oval shaped hole thru the inner fender. The top of the snorkel will snap into this oval shaped hole in the fender.



    Top of snorkel... notice the 2 small plastic clips (and foam gasket) that will hold the snorkel intake in the preexisting oval hole in the inner fender.

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    Quote Originally Posted by 00 Deville

    It goes in pretty much the same way as the old design. Except for the snorkel (intake hose) is routed up between the inner and outer fender. Just above the horns there is an oval shaped hole thru the inner fender. The top of the snorkel will snap into this oval shaped hole in the fender.

    Top of snorkel... notice the 2 small plastic clips (and foam gasket) that will hold the snorkel intake in the preexisting oval hole in the inner fender.
    Thanks, I'm gonna do this over the weekend if the weather holds up.

  16. #15
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    Not trying to thread-jack but I have the same code but my fan comes on. BUT when I checked the pump, I pulled the top hose and I noticed it was wet. So I stuck my finger in the bottom of the pump and it was a small puddle of water in it..... but as I said before it still works. Oh and the cover was broke. I sonr know if that is an issue.

    ----------

    My fuse is fine so I was looking at that amazon part that was posted and I noticed an electrical connector. ... maybe that's disconnected? I dunno. Its weird because it works fine.

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