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  1. #1
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    Yes | No

    If your secondary air pump dies, this bad boy is

    usually the reason for it. It fails in open position ans essentially sends exhaust gases to your air pump and kills it quickly. I'm replacing it preventively and I picked the good timing. The hose is shot and full of crap which has probably reach the pump too.

    I'm using 3/4 heater hose instead of paying $25 for OEM hose. The new valve and gasket will run you about $110 and it's cheaper than $250+ pump.

    I'll probably run the car with hose disconnected for a little bit and look for crap coming out the pump. That will probably throw a code, but good scan tool should take care of it.





    Credit goes to cn90, replace xx with mm
    http://www.[Oops!].com/forums/showthread.php?t=402816



    1998 BMW 540i 6 speed
    Arctic silver, M sport suspension (euro delivery), prod. date 05/98, non VANOS
    Staggered 18" style 32 OEM wheels
    3.15 open differential
    Remus exhaust
    AFE CAI with improved heat shield
    Z3 shifter
    VDO oil pressure and temperature gauges in place of headlight/fog switches
    Powder coated valve covers-satin black
    CDV delete
    Debadged
    AEA DRL module (aftermarket daytime running lights)

    1997 BMW 528iA
    Alpine white, premium package, prod. date 04/97, single VANOS
    Staggered 17" style 32 OEM wheels
    Debadged
    AEA DRL module
    Custom made sun blinds for rear seating area

    2000 Nissan Frontier Desert Runner, AKA "The Work Horse"

    Garage aids:
    Direct Lift Pro Park 8
    Campbell Hausfeld 28 gallon oil lubricated air compressor
    Newair ACP-1400H portable air conditioner and heater
    Auto Enginuity scan tool with BMW enhanced option
    Actron 9135 scan tool-for quick readouts




  2. #2
    Registered Member
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    Yes | No

    REALOEM link for those not familiar with location


    http://www.realoem.com/bmw/showparts...94&hg=11&fg=45



    1998 BMW 540i 6 speed
    Arctic silver, M sport suspension (euro delivery), prod. date 05/98, non VANOS
    Staggered 18" style 32 OEM wheels
    3.15 open differential
    Remus exhaust
    AFE CAI with improved heat shield
    Z3 shifter
    VDO oil pressure and temperature gauges in place of headlight/fog switches
    Powder coated valve covers-satin black
    CDV delete
    Debadged
    AEA DRL module (aftermarket daytime running lights)

    1997 BMW 528iA
    Alpine white, premium package, prod. date 04/97, single VANOS
    Staggered 17" style 32 OEM wheels
    Debadged
    AEA DRL module
    Custom made sun blinds for rear seating area

    2000 Nissan Frontier Desert Runner, AKA "The Work Horse"

    Garage aids:
    Direct Lift Pro Park 8
    Campbell Hausfeld 28 gallon oil lubricated air compressor
    Newair ACP-1400H portable air conditioner and heater
    Auto Enginuity scan tool with BMW enhanced option
    Actron 9135 scan tool-for quick readouts



  3. #3
    Inner Circle Member Inner Circle Member
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    San Jose, CA, United States
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    Inner Circle ©155 since: Jul 21, 2003 edjack will become famous soon enough edjack's Avatar
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    Yes | No

    Might want to mention that this is for the 528i >>

    not the 540i, this vintage of which does not have one of these pumps.
    Ed in San Jose. BMW CCA member since 1987 (Nr. 62319). Golden Gate Chapter. '97 540i 6 speed. Build Date 3/97. Aspensilber over Aubergine leather.

  4. #4
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    Yes | No

    Need I be concerned on my 2000 528i

    with regards to this component? Does it throw a code if the valve is stuck open? I'm at 190K miles and aiming for 240K.

  5. #5
    Registered Member
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    Yes | No

    Yes, that's why I added the realoem link.





    1998 BMW 540i 6 speed
    Arctic silver, M sport suspension (euro delivery), prod. date 05/98, non VANOS
    Staggered 18" style 32 OEM wheels
    3.15 open differential
    Remus exhaust
    AFE CAI with improved heat shield
    Z3 shifter
    VDO oil pressure and temperature gauges in place of headlight/fog switches
    Powder coated valve covers-satin black
    CDV delete
    Debadged
    AEA DRL module (aftermarket daytime running lights)

    1997 BMW 528iA
    Alpine white, premium package, prod. date 04/97, single VANOS
    Staggered 17" style 32 OEM wheels
    Debadged
    AEA DRL module
    Custom made sun blinds for rear seating area

    2000 Nissan Frontier Desert Runner, AKA "The Work Horse"

    Garage aids:
    Direct Lift Pro Park 8
    Campbell Hausfeld 28 gallon oil lubricated air compressor
    Newair ACP-1400H portable air conditioner and heater
    Auto Enginuity scan tool with BMW enhanced option
    Actron 9135 scan tool-for quick readouts



  6. #6
    Registered Member
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    Yes | No

    UPDATE, all finished and buttoned up (m)

    As I suspected, after starting the car with secondary air pump hose disconnected from the valve, a bit of water came out of hose but it didn't throw a code.

    Since I used high quality Thermoid heater hose instead the pricey OEM hose ($50 at the dealer with the discount, online about $25), I had to reroute it to avoid the kinking. It was worth the little effort since the hose was only few bucks.

    The finger on first picture is pointing to the original routing from the air pump.

    The second picture is showing where it comes out in engine bay. I used the drill saw on plastic cover for clean looking job. This routing is actually making more sense as it frees more room around the engine block.

    Third picture shows new shiny valve which worked flawlesly upon start up. No more exhaust leak sound and the pump was much more quieter since the water is gone and no more exhaust gases flowing toward it.








    1998 BMW 540i 6 speed
    Arctic silver, M sport suspension (euro delivery), prod. date 05/98, non VANOS
    Staggered 18" style 32 OEM wheels
    3.15 open differential
    Remus exhaust
    AFE CAI with improved heat shield
    Z3 shifter
    VDO oil pressure and temperature gauges in place of headlight/fog switches
    Powder coated valve covers-satin black
    CDV delete
    Debadged
    AEA DRL module (aftermarket daytime running lights)

    1997 BMW 528iA
    Alpine white, premium package, prod. date 04/97, single VANOS
    Staggered 17" style 32 OEM wheels
    Debadged
    AEA DRL module
    Custom made sun blinds for rear seating area

    2000 Nissan Frontier Desert Runner, AKA "The Work Horse"

    Garage aids:
    Direct Lift Pro Park 8
    Campbell Hausfeld 28 gallon oil lubricated air compressor
    Newair ACP-1400H portable air conditioner and heater
    Auto Enginuity scan tool with BMW enhanced option
    Actron 9135 scan tool-for quick readouts



  7. #7
    Registered Member
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    Member No: 119706 Bmw540san is on a distinguished road Bmw540san's Avatar
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    Yes | No

    Re: Need I be concerned on my 2000 528i

    Your engine uses the same type of valve so it wouldn't hurt to check it. Pump does seem pretty robust, so it may take a while for exhaust gases to kill it. That is if you have the leak.

    I went ahead and spent $110 now instead possibly $300+ later. Also this ensures correct emission as I have the test coming up next month.




    1998 BMW 540i 6 speed
    Arctic silver, M sport suspension (euro delivery), prod. date 05/98, non VANOS
    Staggered 18" style 32 OEM wheels
    3.15 open differential
    Remus exhaust
    AFE CAI with improved heat shield
    Z3 shifter
    VDO oil pressure and temperature gauges in place of headlight/fog switches
    Powder coated valve covers-satin black
    CDV delete
    Debadged
    AEA DRL module (aftermarket daytime running lights)

    1997 BMW 528iA
    Alpine white, premium package, prod. date 04/97, single VANOS
    Staggered 17" style 32 OEM wheels
    Debadged
    AEA DRL module
    Custom made sun blinds for rear seating area

    2000 Nissan Frontier Desert Runner, AKA "The Work Horse"

    Garage aids:
    Direct Lift Pro Park 8
    Campbell Hausfeld 28 gallon oil lubricated air compressor
    Newair ACP-1400H portable air conditioner and heater
    Auto Enginuity scan tool with BMW enhanced option
    Actron 9135 scan tool-for quick readouts



  8. #8
    Eurodavid
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    Yes | No

    my 1996 e39 528i doesn't have one either, thkfully


  9. #9
    Eurodavid
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    Yes | No

    here's what my '96 e39 M52 528i has, if anyone's

    interested:


    Vacuum Control - Engine


    I do not have the:

    Air Pump F Vacuum Control



    Sometimes, I have to thank heavens for my little European-spec baby. Along with not having this secondary air pump, not having the more complicated, limiting DSC but instead relying on good ole' ASC, not having to turn it off ever (ASC only monitors slippage on the rear wheels, with ASC, thus you can drive the car harder without triggering and/or tripping anything which DSC is prone to), not having a recirculating ball steering system but instead enjoying the simplicity & feel of rack & pinion, and finally not having that malfunctioning prone on-board computer, called the Multi-Information System (MID), that was upgraded in mid-1997 and thus began the long serious of headaches and screaming for DIY e39 owners, it all is a blessing. Add these up with the one final beautiful aspect---a beautiful, old fashioned butterfly throttle body that is still on my car, and which disappeared in August of 1998 for all I6 owners----all these things makes working on my old girl so much more fun & easier ;-) All this makes it easier sometimes to accept that I still am missing TWO F@#KING CYLINDERS!

    Eurodavid

  10. #10
    Registered Member
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    Pembroke, MA, United States
    Member No: 4328 jimlev will become famous soon enough jimlev will become famous soon enough jimlev's Avatar
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    Yes | No

    Are those two missing cylinders on your Xmas list?






    "Drive It Like You Stole It, A Sickness for Quickness"
    The Bottle Rocket "King of Spray" 2 Stage Nitrous Oxide
    Dare to be different and stand out among the crowd of me-to-cars!
    No guts, no glory! Tire smoke, not traction control!
    Zionsville all aluminum radiator to replace the 3 leak prone Nissens Radiators!

    NOS Progressive 2 Stage Controller with port injection
    Snow's Performance Methanol/Water Injection
    Dinan downloads, VAC Under Drive Pulleys
    Dinan Carbon Fiber CAI
    Dinan Front Strut Bar
    Electric Cooling Fan w/PWM controller
    NGK Iridium Plugs
    DDE Enhanced Angel Eyes, Smoked Lenses
    Koni FSD's/H&R Springs, BAV Brass Caliper Bushings
    Eisenmann Race Exhaust (from H8-Rain's car)
    ///M5 3.15 LSD
    ///M5 Sway Bars, Front & Rear
    Energy Suspension Polyurethane Sway Bar Bushings
    ///M5 Gauge Cluster Rings ///M5 Lip Spoiler
    ///M5 Mirrors and Switches
    Leather Z weighted shift knob (thanks H8-Rain)
    Rogue “Octane” Short Shift kit w/WSR
    Rogue Tranny Mounts
    StopTech Brake Lines Front & Rear
    Axxis Deluxe Plus pads Front & Rear
    Staggered M Parallel 66, Xenons
    Modified CDV, UGDO
    Euro Storage Tray (thanks Zombywolf)
    Redline in Diff and Tranny
    Passport 8500 X50, Escort ZR3 Laser Jammer
    G-Tech/Competition Pro Data Logger
    Auto Enginuity OBD-II Scan Tool
    25% Tint, X-Pel, LoJack
    PIAA Driving Lights
    BMW CCA Member Boston Chapter

  11. #11
    Registered Member
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    Pembroke, MA, United States
    Member No: 4328 jimlev will become famous soon enough jimlev will become famous soon enough jimlev's Avatar
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    Yes | No

    Nice repair job (m)

    I think if you kept starting it without the hose connected you would get a CEL. The CAT's wouldn't heat up as quickly which may effect the operation of the O2 sensors which the DME would pick up. Not a big deal for you, you could reset the fault.
    Still waiting for my AutoEngunity to arrive. Should be here in a few days.

  12. #12
    Craig in Canada
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    Yes | No

    You know, it's interesting...

    ...just how different some of the earlier M52s are. I *do* have the valve and pump system on my 4/98 M52:

    http://www.realoem.com/bmw/showparts...39&hg=11&fg=45

    I remember years ago there was a lot of discussion about changing the valves as PM because valves were $50 and pumps were $450. Later, the prices of the valves went way up and the prices of the pumps came way down and it didn't make any sense any more to replace the valve even though there may be nothing wrong with it. Right now my uber-discount parts house is $138CDN for the valve and $248CDN for an OE pump. I'm still running my 4/98 factory parts for both (touch wood). Every now and then I think about taking the pump out and servicing it - check for water build up, lubrication, cleaning.

  13. #13
    Registered Member
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    Ooltewah, TN, United States
    Member No: 119706 Bmw540san is on a distinguished road Bmw540san's Avatar
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    Yes | No

    Craig, just disconnect hose at the valve and look

    inside. If you see the sooth, you know the valve is leaking. Also, if you run the engine for about 30 sec like that you'll blow out the water out of the pump. I can just about the guarantee you that hose will be rotten at that end.
    I got 6ft of Thermoid heater hose for $6.50. All you need is about 2ft and you saved yourself $25.
    If the hose is shot, that means that you're getting some amount of exhaust gases in the engine bay which can find it's way in the cabin.



    1998 BMW 540i 6 speed
    Arctic silver, M sport suspension (euro delivery), prod. date 05/98, non VANOS
    Staggered 18" style 32 OEM wheels
    3.15 open differential
    Remus exhaust
    AFE CAI with improved heat shield
    Z3 shifter
    VDO oil pressure and temperature gauges in place of headlight/fog switches
    Powder coated valve covers-satin black
    CDV delete
    Debadged
    AEA DRL module (aftermarket daytime running lights)

    1997 BMW 528iA
    Alpine white, premium package, prod. date 04/97, single VANOS
    Staggered 17" style 32 OEM wheels
    Debadged
    AEA DRL module
    Custom made sun blinds for rear seating area

    2000 Nissan Frontier Desert Runner, AKA "The Work Horse"

    Garage aids:
    Direct Lift Pro Park 8
    Campbell Hausfeld 28 gallon oil lubricated air compressor
    Newair ACP-1400H portable air conditioner and heater
    Auto Enginuity scan tool with BMW enhanced option
    Actron 9135 scan tool-for quick readouts



  14. #14
    Registered Member
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    Ooltewah, TN, United States
    Member No: 119706 Bmw540san is on a distinguished road Bmw540san's Avatar
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    Yes | No

    Yes, I think in the long run, it should prolong

    the life of cats and o2 sensors, not to mention anoying check engine light. Hopefully, AE won't get confused with readings from your plumbing empire, jk.



    1998 BMW 540i 6 speed
    Arctic silver, M sport suspension (euro delivery), prod. date 05/98, non VANOS
    Staggered 18" style 32 OEM wheels
    3.15 open differential
    Remus exhaust
    AFE CAI with improved heat shield
    Z3 shifter
    VDO oil pressure and temperature gauges in place of headlight/fog switches
    Powder coated valve covers-satin black
    CDV delete
    Debadged
    AEA DRL module (aftermarket daytime running lights)

    1997 BMW 528iA
    Alpine white, premium package, prod. date 04/97, single VANOS
    Staggered 17" style 32 OEM wheels
    Debadged
    AEA DRL module
    Custom made sun blinds for rear seating area

    2000 Nissan Frontier Desert Runner, AKA "The Work Horse"

    Garage aids:
    Direct Lift Pro Park 8
    Campbell Hausfeld 28 gallon oil lubricated air compressor
    Newair ACP-1400H portable air conditioner and heater
    Auto Enginuity scan tool with BMW enhanced option
    Actron 9135 scan tool-for quick readouts



  15. #15
    Registered Member
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    Ooltewah, TN, United States
    Member No: 119706 Bmw540san is on a distinguished road Bmw540san's Avatar
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    Yes | No

    Euro, how about ESS or VF supercharger. You'd

    keep your old girl with some new life inhaled in her.



    1998 BMW 540i 6 speed
    Arctic silver, M sport suspension (euro delivery), prod. date 05/98, non VANOS
    Staggered 18" style 32 OEM wheels
    3.15 open differential
    Remus exhaust
    AFE CAI with improved heat shield
    Z3 shifter
    VDO oil pressure and temperature gauges in place of headlight/fog switches
    Powder coated valve covers-satin black
    CDV delete
    Debadged
    AEA DRL module (aftermarket daytime running lights)

    1997 BMW 528iA
    Alpine white, premium package, prod. date 04/97, single VANOS
    Staggered 17" style 32 OEM wheels
    Debadged
    AEA DRL module
    Custom made sun blinds for rear seating area

    2000 Nissan Frontier Desert Runner, AKA "The Work Horse"

    Garage aids:
    Direct Lift Pro Park 8
    Campbell Hausfeld 28 gallon oil lubricated air compressor
    Newair ACP-1400H portable air conditioner and heater
    Auto Enginuity scan tool with BMW enhanced option
    Actron 9135 scan tool-for quick readouts



  16. #16
    Registered Member
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    Pembroke, MA, United States
    Member No: 4328 jimlev will become famous soon enough jimlev will become famous soon enough jimlev's Avatar
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    Yes | No

    U should include the valve in normal maintenance(m

    Every 2 years you could remove the valve and clean it out to extend it's life. While it's out you can connect a short section of tubing to the fitting on the side of the valve. By sucking on it you should see the valve opening and closing if it is good.
    Replace the gasket when you re-install the valve.

  17. #17
    Eurodavid
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    Yes | No

    Re: Euro, how about ESS or VF supercharger. You'd

    BMW540san,

    I think an ESS or a VF would blow my car apart. The ole' girl has 200,000kms on her, she's driven as an everyday driver, and I am not sure the extra strain of even 1 added HP on top of the existing 190HP would be tolerated well by the engine and/or that steptronic auto tranny. If I didn't have an automatic and I didn't drive it every day, I might consider it.

    As it is, have to just enjoy her as she is. Besides, to be truthful, I now keep and drive the car just so I can be part of this board. Some of the simple things in life (like perpetually missing two cylinders) are worth suffering for ;-)

    Eurodavid

  18. #18
    Bimmer5Michael
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    Yes | No

    Do you have cold air intake? I have seen that

    quite a few times with cai. Pulled mine out when I bought the car because of codes saying the pump waws bad, turned out to be simply the vacuum line. Pulled it out a year ago and it's still clean as a whistle.

    We live in the same area and probably drive the same roads so I am wondering if it is the cold air intake that causes that problem.

    Michael
    00 540 sport 6 speed

  19. #19
    Registered Member
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    Ooltewah, TN, United States
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    Yes | No

    In my case it was definitely the valve because the

    vacuum line is new and the valve is known to fail. I have the CAI on 540, not on 528. I still don't understand the connection with CAI. This valve sits on exhaust manifold and is run by engine vacuum. Are you thinking of some other type of valve.



    1998 BMW 540i 6 speed
    Arctic silver, M sport suspension (euro delivery), prod. date 05/98, non VANOS
    Staggered 18" style 32 OEM wheels
    3.15 open differential
    Remus exhaust
    AFE CAI with improved heat shield
    Z3 shifter
    VDO oil pressure and temperature gauges in place of headlight/fog switches
    Powder coated valve covers-satin black
    CDV delete
    Debadged
    AEA DRL module (aftermarket daytime running lights)

    1997 BMW 528iA
    Alpine white, premium package, prod. date 04/97, single VANOS
    Staggered 17" style 32 OEM wheels
    Debadged
    AEA DRL module
    Custom made sun blinds for rear seating area

    2000 Nissan Frontier Desert Runner, AKA "The Work Horse"

    Garage aids:
    Direct Lift Pro Park 8
    Campbell Hausfeld 28 gallon oil lubricated air compressor
    Newair ACP-1400H portable air conditioner and heater
    Auto Enginuity scan tool with BMW enhanced option
    Actron 9135 scan tool-for quick readouts



  20. #20
    Registered Member
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    Member No: 4328 jimlev will become famous soon enough jimlev will become famous soon enough jimlev's Avatar
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    Yes | No

    He may be thinking of the Idle Air Control valve






    "Drive It Like You Stole It, A Sickness for Quickness"
    The Bottle Rocket "King of Spray" 2 Stage Nitrous Oxide
    Dare to be different and stand out among the crowd of me-to-cars!
    No guts, no glory! Tire smoke, not traction control!
    Zionsville all aluminum radiator to replace the 3 leak prone Nissens Radiators!

    NOS Progressive 2 Stage Controller with port injection
    Snow's Performance Methanol/Water Injection
    Dinan downloads, VAC Under Drive Pulleys
    Dinan Carbon Fiber CAI
    Dinan Front Strut Bar
    Electric Cooling Fan w/PWM controller
    NGK Iridium Plugs
    DDE Enhanced Angel Eyes, Smoked Lenses
    Koni FSD's/H&R Springs, BAV Brass Caliper Bushings
    Eisenmann Race Exhaust (from H8-Rain's car)
    ///M5 3.15 LSD
    ///M5 Sway Bars, Front & Rear
    Energy Suspension Polyurethane Sway Bar Bushings
    ///M5 Gauge Cluster Rings ///M5 Lip Spoiler
    ///M5 Mirrors and Switches
    Leather Z weighted shift knob (thanks H8-Rain)
    Rogue “Octane” Short Shift kit w/WSR
    Rogue Tranny Mounts
    StopTech Brake Lines Front & Rear
    Axxis Deluxe Plus pads Front & Rear
    Staggered M Parallel 66, Xenons
    Modified CDV, UGDO
    Euro Storage Tray (thanks Zombywolf)
    Redline in Diff and Tranny
    Passport 8500 X50, Escort ZR3 Laser Jammer
    G-Tech/Competition Pro Data Logger
    Auto Enginuity OBD-II Scan Tool
    25% Tint, X-Pel, LoJack
    PIAA Driving Lights
    BMW CCA Member Boston Chapter

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