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Thread: replaced EGR solenoid, so far so good

  1. #1
    Registered User Aronis's Avatar
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    replaced EGR solenoid, so far so good

    I finally took the time to replace the $50 EGS solenoid in hopes of fixing the insufficient flow for the secondary air pump system. It's been a week now, and still no CEL!

    Last thing is to replace my A/C compressor, think DIY or pay.

    Question about the serpentine belt for those who have replaced it, can you get at the tension bolt from below without putting the car in service position? I'd like to just swap the a/c compressor from below without a major PITA job.

    Mike
    '18 BMW M5, '19 Porsche Boxster GTS
    (prior '94 325is, '97 M3, '00 A6 4.2,'03 RS6,'08 A4 Cab,'13 A8L,'15 Q7,'16 BMW M2,

  2. #2
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    If I recall correctly, yes, but you need just the right length socket, there's not a lot of extra room. I did it once and it's a pain getting the serpentine belt routed properly, but if you only remove the AC compressor and don't remove the belt from the rest of the pulleys, it shouldn't be too terrible.
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  3. #3
    Registered User Aronis's Avatar
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    Thanks!
    I'll take a look when the cold weather passes......LOL
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    (prior '94 325is, '97 M3, '00 A6 4.2,'03 RS6,'08 A4 Cab,'13 A8L,'15 Q7,'16 BMW M2,

  4. #4
    Registered User hahnmgh63's Avatar
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    Yes, with a good long box end wrench rather than a socket. Compressor is a DIY as long as you are prepped to do a proper recharge of the system, that is with a vacuum pump first then fill. At the factory they vacuum the system and then liquid fill by weight. I vacuum'd then liquid filled but guessed at the amount so I backed that up by starting the engine and using a pressure gauge and then topped it off from there. I have since bought a nice digital scale for next time.
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  5. #5
    Registered User Aronis's Avatar
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    Excellent..sounds doable. can you point to the type of vacuum pump to use?
    '18 BMW M5, '19 Porsche Boxster GTS
    (prior '94 325is, '97 M3, '00 A6 4.2,'03 RS6,'08 A4 Cab,'13 A8L,'15 Q7,'16 BMW M2,

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    Quote Originally Posted by Aronis View Post
    Excellent..sounds doable. can you point to the type of vacuum pump to use?
    This is what I use, works great:

    https://www.amazon.com/Mastercool-90...ol+vacuum+pump

  7. #7
    Registered User hahnmgh63's Avatar
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    That one on Amazon looks like a good price. Just make sure it has fitting for the R134A ports, probably does.
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  8. #8
    Registered User Aronis's Avatar
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    Lasted less than two weeks, CEL back on, did not even scan LOL, I think the secondary air pump is going, is very loud now.....Just ordered a new one from Autohauz, $308. free shipping. Anyone change one of these? Looks pretty easy.

    Mike
    '18 BMW M5, '19 Porsche Boxster GTS
    (prior '94 325is, '97 M3, '00 A6 4.2,'03 RS6,'08 A4 Cab,'13 A8L,'15 Q7,'16 BMW M2,

  9. #9
    Registered User Bigglezworth's Avatar
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    Quote Originally Posted by Aronis View Post
    Lasted less than two weeks, CEL back on, did not even scan LOL, I think the secondary air pump is going, is very loud now.....Just ordered a new one from Autohauz, $308. free shipping. Anyone change one of these? Looks pretty easy.

    Mike
    Easy access. Plugs right in and bolts up with a single bracket. 10-15min +/- swap time
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  10. #10
    Registered User Aronis's Avatar
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    Thanks, Looks pretty straightforward.

    Mike
    '18 BMW M5, '19 Porsche Boxster GTS
    (prior '94 325is, '97 M3, '00 A6 4.2,'03 RS6,'08 A4 Cab,'13 A8L,'15 Q7,'16 BMW M2,

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