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      09-20-2017, 10:42 AM   #70
rkstar9
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Drives: '10 X5 3.5D
Join Date: Sep 2010
Location: Chicago

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Quote:
Originally Posted by Yozh View Post
Pressure converters do not hold vacuum if not energized. You need to test then hooked up and powered on with system vacuum present. Otherwise, they do make "small fan" noise if tested off power. Depending how you were testing your vacuum accumulator, losing vacuum could be a few things.
OK I guess i misunderstood.

I got the 2 new pressure converters and sure enough they behave the same way when vacuum is applied and do not hold vacuum. the only difference is that they do not make small fan noise.

one of the pressure converters in the car does make the noise. anyway I'm past the point of testing them. Ill just replace them and hope for the best.

Edit:
Further testing of the reservoir shows a larger leak. So ordered a new reservoir as well

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Last edited by rkstar9; 09-20-2017 at 11:24 AM..
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