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Preventative measures for failure of secondary air pump

Discussion in '2nd Gen. Tacomas (2005-2015)' started by hexnutter, Nov 10, 2021.

  1. Nov 10, 2021 at 7:16 PM
    #1
    hexnutter

    hexnutter [OP] Well-Known Member

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    Hello taco heads. I read a bunch and I don't want this to be another 2nd air pump failure post but Im thinking of doing the unimod filter and taking out the foam one. Im terrified as I have a 2012 2.7, but what preventative measures for failure of secondary air pump would you guys recommend? I want to blow out the line but if the foam filter if fine Ill just take it out. I really just want to make sure nothing enters the valve.
     
    Last edited: Nov 10, 2021
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  2. Nov 10, 2021 at 7:33 PM
    #2
    Dm93

    Dm93 Test Don't Guess

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    The Uni filter mod is about the only preventative you can do, I'm not sure about the 4cyl trucks but the V6 trucks had a higher failure rate on the valves which they fixed on the newer ones by programming the pump to run at shutdown to purge moisture from the lines.
     
  3. Nov 10, 2021 at 9:17 PM
    #3
    Jimmyh

    Jimmyh Well-Known Member

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    I did the unimod filter on my 2.7 and haven't had any issues.
     
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  4. Nov 10, 2021 at 9:20 PM
    #4
    whatstcp

    whatstcp currently drunk so don't listen to me

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    just remove the foam filter, don't overthink it. If you pull it out and some pieces break out, just vacuum them up. No need to blow air in as you would just be shoving pieces further in.

    Just do it and forget about it forever.
     
  5. Nov 11, 2021 at 7:47 AM
    #5
    hexnutter

    hexnutter [OP] Well-Known Member

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    Thanks guys, order filter and will install when I get it. It only uses one valve and doesnt have that turn on at the end to get moisture out.
     
  6. Nov 11, 2021 at 9:54 AM
    #6
    BassAckwards

    BassAckwards Well-Known Member

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    I don’t think you have much to worry about. It was the 2012 v6 trucks that had the most issues since that was the first year they got the pump.

    the 2TR-FE has had the SAI pump since 2005

    unifilter would be good preventative maintenance. If yours fails, then check out Hewitt tech. They make a bypass that’s plug and play
     
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  7. Nov 11, 2021 at 10:54 AM
    #7
    daveleau

    daveleau Active Member

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  8. Nov 11, 2021 at 3:08 PM
    #8
    hexnutter

    hexnutter [OP] Well-Known Member

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    Thanks, I ended up getting a 1" clamp on motorcycle filter for 7 bucks form Amazon. It has chrome on it too (the only on my base model).
     
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  9. Nov 11, 2021 at 5:04 PM
    #9
    blur

    blur Well-Known Member

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    I got the HT kit mentioned above for my ‘12 V6 and aside from a possibly related CEL that came on once, I’ve been worry free.
     
  10. Nov 11, 2021 at 5:19 PM
    #10
    Extra Hard Taco

    Extra Hard Taco I fell off my bike.

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    The filter isn't the only cause of failure in these. There are internals in the pump that also fail. The filter on my 2012 was still 100% intact when the secondary air pump failed.
     
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  11. Nov 12, 2021 at 8:00 AM
    #11
    hexnutter

    hexnutter [OP] Well-Known Member

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    Would residue back flow into the valve possibly cause it to fail then? If the pump never sucks back after it is a tube to the valve, could you seafoam it or is that a really stupid idea? As some one mentioned Im overthinking it, I need to move onto other preventative maintenance.
     
  12. Nov 12, 2021 at 8:42 AM
    #12
    Dm93

    Dm93 Test Don't Guess

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    I wouldn't worry about it too much, I don't see many posts about Secondary Air Injection problems on the 4cyl trucks.
     
  13. Nov 12, 2021 at 1:08 PM
    #13
    hexnutter

    hexnutter [OP] Well-Known Member

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    So foam filter was fine, just waiting for filter now.
     
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  14. Nov 12, 2021 at 1:35 PM
    #14
    dblwall

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    Cutting kind of short but I'm taking my '12 in to the dealer on Monday. Just have to remember to take the Uni Filter off & put the original back on.
     
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  15. Nov 13, 2021 at 2:36 PM
    #15
    hexnutter

    hexnutter [OP] Well-Known Member

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    Oh doesnt that upset you, they made a mistake and you fix it then have to turn it back.

    So considering the cost I just got the $28 unifilter, if its my only preventative maintenance... Im guessing the added cost its, for a 1" breather filter, its coated with polysomething, is washable and filters better? Its kinda like everyone liking K&N but the best filtration is dry paper.

    Programing the ECU to kick on when turning off (like 13 on) would be hard I imagine?
     
  16. Nov 16, 2021 at 8:35 AM
    #16
    dblwall

    dblwall Member

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    Thank you Toyota
    toy-1_2585cbfa669afec49c8d3c3807f6ac2f9d534bb9.jpg
     
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  17. Nov 16, 2021 at 9:11 AM
    #17
    SR-71A

    SR-71A Define "Well-Known Member"

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    Does your truck now run the SAIS at shutdown as well as startup?
     
  18. Nov 16, 2021 at 9:59 AM
    #18
    IL Capo

    IL Capo Well-Known Member

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  19. Nov 16, 2021 at 3:58 PM
    #19
    dblwall

    dblwall Member

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    Not at shutdown
     
  20. Nov 17, 2021 at 5:38 AM
    #20
    SR-71A

    SR-71A Define "Well-Known Member"

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    Ahh ok. I wasnt sure if that service campaign for the 2012's would re-program the ECU to do the purge cycle at shutdown. Or if it was just new parts
     

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