Repair, Dont Replace the SAI , Easy DIY

[krazyk]

Repair, Dont Replace the SAI , Easy DIY

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This is a relatively easy DIY that may save a failing secondary air injection motor, commonly referred to as the SAI. Removal and installation is easy and covered many times elsewhere, so I wont repeat it. I would only do this repair if I heard the tell-tale screech/squeal on SAI start-up. The noise is indicating the SAI has a problem anyway, whether its the bearings or fan discs, the unit may need service soon. The noise could be from the sealed bearings or fan discs. After SAI removal, se

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• Author
  krazyk
• Category
  Carrera (996) - Common Fixes and Repairs
• Submitted
  01/14/2013 09:28 AM
• Updated
  03/17/2017 05:03 AM

 

[987_RDC]

Looks good. Perhaps recommend Mobil Polyrex EM as the grease. Made for electronic motors and $5 from Grainger.

[krazyk]

Yes, thank you. I posted lite grease because you should not use any of the thicker types or wheel bearing grease. I will pull the unit again after awhile and check on the bearings. I tested it before reinstall and its super quite except for the silly vacuum cleaner sound.

[kgoertz]

Nice DIY. Thanks for the instructions. I was planning on pulling apart my SAI and this DIY helped convince me it was worth the effort. I used Teflon bearing used for bicycle bearings but I may replace with Mobil in the future. Using a syringe was a great idea idea.

I also used a compressor to clear out some of the dust in the motor and it might be worth recommending. The amount of soot that blew out of the motor was pretty significant.

[SpawnyWhippet]

Great DIY write-up! Mine is whining so this is on the cards for me. How long does it take from start to finish? I already ordered the Mobil grease from Grainger, but need to find some time to work on this one.

[SpawnyWhippet]

In answer to my own question, it takes about an hour, start to finish. My noisy SAI pump is now totally silent :-)