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Need Help IDing a part

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    #1

    Need Help IDing a part

    Im tring to freshin up my 90LX before I try and get it on the road.
    I just took out the batter and battery tray and their is an air tube with some vacuum hoses and an electrical hook-up and the Vacum hose goes to the top of the plenum (or intake).
    I have a K&N shorty intake (or CAI) so my air intake is not hooked to it anymore. My question is what is this air tube w/ vacuum hose and can I remove it and plug the vacuum hose that goes to the imtake?

    I read theirs the ABS stuff right under the battery box but I didnt see a thign like that. Im guessing this car doesnt have ABS?

    Thanx alot for any help or info with this.

    Also anyone here from Central NY who can give a hand our who would just like to meet up and maybe share some ideas
    Tags: None
    #2
    the abs stuff is not under the battery box, its near the strut tower. also your car doesnt have abs because abs wasnt available in the 90 or 91 models, it didnt exist. can you please submit some pictures so we can see what your talking about? this would help alot then im sure i or another member can id your part.
    thanks.

    Comment

      #3
      LX models do not have ABS, and that is not where the stuff is located anyway.

      Your part names in parenthises are completely different from the parts you mentioned directly before them... The plenum is part of the intake manifold, and a CAI goes down into your fender, and doesn't start in your engine bay.

      To answer your question, yes, you can remove that stuff. The vac line and electrical connector don't matter with the short ram intake that you have. It might be wise to plug whatever connected to that vac line, though.






      Comment

        #4
        That stuff under the Battery Tray is the Intake Air Bypass (IAB). You have a IAB Solenoid which is hooked up to that vacuum line, and a two pin connector. When you hit 3k RPMs the solenoid gets voltage from the ECU and opens, sending vacuum to a vac-operated butterfly valve that opens another opening to the intake chamber. The effect is more air flow at RPMs 3k and up.

        Since you have a Cold Air Intake, this design feature is moot. Be sure the vac line is capped or plugged somehow, otherwise you have a vac leak that can lead to irregular idle conditions.
        1997 Honda Accord EX-V6:
        C27A4 - 2.7-liter 90º-V6 with SOHC, 24-valves, PGM-Fi
        MPZA - Electronically controlled 4-speed automatic, 1 reverse
        ~170 cu. in. / ~170 ft. lbs. / ~170 whp

        Originally posted by James Matteu
        You have to consider the results of your test in an objective manner, or as the country folk like to say, "son, you gotta be smarter than what you're workin' with."

        Comment

          #5
          Originally posted by James Matteu View Post
          That stuff under the Battery Tray is the Intake Air Bypass (IAB). You have a IAB Solenoid which is hooked up to that vacuum line, and a two pin connector. When you hit 3k RPMs the solenoid gets voltage from the ECU and opens, sending vacuum to a vac-operated butterfly valve that opens another opening to the intake chamber. The effect is more air flow at RPMs 3k and up.

          Since you have a Cold Air Intake, this design feature is moot. Be sure the vac line is capped or plugged somehow, otherwise you have a vac leak that can lead to irregular idle conditions.
          How much extra air does this other opening produce, when that butterfly opens? How much extra power is it making?
          I also have a 98 Taurus (DuraTec) and a 90 SHO with the same type of function in its low intake. Where their are 12 air passeges from the plenum going to 6 cylns and half have the butterflies in them and they open at 3500 (elec not vacum on 98 and Vacum not elec on 90) and on the Taurus it makes a difference when the secondiers kick in.

          So I was woundering if it really helps on the F22A1 or should I just keep the K&N shorty intake? And if it does help, can you bore it out and put a larger butterfly in.

          And Thanx a million for answering my quesiton about what that part is .

          Comment

            #6
            just so everyone knows there are some abs parts by the battery box(i do realize he has a lx but just to clear up the confusion)

            abs accumulator not clutch damper






            it is attached to the below the battery and left of the transmission when looking down
            Last edited by quaidum; 10-25-2010, 06:15 PM.
            ''COUPE''




            ''WAGON''

            Comment

              #7
              No, that is not the IAB. That is part of the intake manifold, and also NOT ON THE LX MODEL.

              That box is more for noise reduction, and increased airflow through the intake pipe at hgher RPM. You do not need it if you have an aftermarket intake. You can remove it.


              Trust me.






              Comment

                #8
                Originally posted by quaidum View Post
                just so everyone knows there are some abs parts by the battery box

                abs accumulator
                [/IMG]
                True.

                But not on an LX model. The car in question has no ABS. N






                Comment

                  #9
                  Originally posted by deevergote View Post
                  True.

                  But not on an LX model. The car in question has no ABS. N
                  yeah, i read the later post that you wrote and noticed that is was a lx so i edited my post
                  ''COUPE''




                  ''WAGON''

                  Comment

                    #10
                    My post was informational. 'deevergote' is right:

                    You do not need it if you have an aftermarket intake. You can remove it.
                    And I mentioned:

                    Since you have a Cold Air Intake, this design feature is moot.
                    but failed to emphasize the point, you're CAI gains far outweigh any achieved with the IAB; and 'deevergote' is correct in pointing out that this is more for noise reduction than performance.
                    1997 Honda Accord EX-V6:
                    C27A4 - 2.7-liter 90º-V6 with SOHC, 24-valves, PGM-Fi
                    MPZA - Electronically controlled 4-speed automatic, 1 reverse
                    ~170 cu. in. / ~170 ft. lbs. / ~170 whp

                    Originally posted by James Matteu
                    You have to consider the results of your test in an objective manner, or as the country folk like to say, "son, you gotta be smarter than what you're workin' with."

                    Comment

                      #11
                      SWEET, tommorrow, its getting ripped off

                      Thanx again people for the help and info.

                      You can bet Ill be asking more questions as I try and get this on the road in the coming days or weeks.

                      Comment

                        #12
                        Don't forget to cap the vac line so you don't have a leak!!
                        1997 Honda Accord EX-V6:
                        C27A4 - 2.7-liter 90º-V6 with SOHC, 24-valves, PGM-Fi
                        MPZA - Electronically controlled 4-speed automatic, 1 reverse
                        ~170 cu. in. / ~170 ft. lbs. / ~170 whp

                        Originally posted by James Matteu
                        You have to consider the results of your test in an objective manner, or as the country folk like to say, "son, you gotta be smarter than what you're workin' with."

                        Comment

                          #13
                          Originally posted by James Matteu View Post
                          That stuff under the Battery Tray is the Intake Air Bypass (IAB). You have a IAB Solenoid which is hooked up to that vacuum line, and a two pin connector. When you hit 3k RPMs the solenoid gets voltage from the ECU and opens, sending vacuum to a vac-operated butterfly valve that opens another opening to the intake chamber. The effect is more air flow at RPMs 3k and up.
                          I realize it doesn't matter to the OP, but wanted to clarify the function James describes. The Honda manual calls this the "Intake Air Control System". The valve in the lower intake tube is actually spring loaded open. Below 3K (93 manual states 3.5K), the ECM powers a solenoid to apply vacuum to close the valve to block intake air in the lower tube and open a connection to the resonator to decrease air intake noise as 'deevergote' noted.

                          My 90 LX had this system, but by 93 it was only used on the EX and SE. The 93 DX and LX just had one intake tube opening in the upper tube feeding the air cleaner box and the lower tube connected only to the resonator. On my 90 LX and 93 EX, I simply removed the vacuum line and plugged it so that both intake tubes were open all the time - not much difference in intake noise. On my 93 LX's, I installed the lower tube from a 90 so that I have two tubes feeding the air cleaner. It is twice the flow area below 3K (or 3.5K), but I can't say how much it helps.

                          I tried a real poor man's 'cold' (really engine compartment) air intake on the 90 by cutting a 3 inch hole in the bottom of the filter box to bypass the restriction in the intake tubes. Created quite a growl, which my wife didn't like. So I installed a new filter box and plugged the vacuum line to the valve.
                          Last edited by Fleetw00d; 10-27-2010, 11:34 PM.
                          90 LX 4dr 5 spd 396,014 (sold 1/1/2022) - MRT: http://www.cb7tuner.com/vbb/showthread.php?t=201450
                          08 Element LX FWD AT 229,000 - MRT: fleetw00d : 2008 Honda Element LX - CB7Tuner Forums

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