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Please post your flywheel heatlh ... Durametric/PST2 required (easy)


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need your help.

Manual gearbox owners:

If you have just a couple minutes with your Durametric (or PST2/PIWIS), and your car idling, can you read out these three "Actual values" for me and post them here?

Segment A

Segment B

Learn. progress sens. wheel adapt.

Also please include the version of Durametric you are running, This is displayed in the title bar or under help, about. For example I am running 6.1.1.5.

******************************************************************

Technical explanation below, if you are curious

******************************************************************

I'll start it off with my values after 150 miles on a DME reset.

Segment A: 1.0002

Segment B: 0.0999

Learn. progress sens. wheel adapt.: 0.0000

One last issue remains with my rebuild. I'm getting occasional random rough running and stumbling below 680 RPM at hot idle. It's pretty random. Sometimes it will even purr along at idle for several minutes without ever hesitating. With any sort of load there is no hesitation. No codes of course, and no misfires.

I've already ohmed out my crank sensor and it is in acceptable ohm range (even when warm) 800-1000 ohms and I believe the cam position sensors are good too, as I've checked over the wiring and appropriate voltages to expect.

Short of buying an oscilloscope (which costs nearly as much a a flywheel), this is the best tool I think I have on hand in diagnosing the flywheel. (yes I did perform spring test per TSB 1360, although I did note weak springs, little resistance during test, but it did behave the way it said is a "good DMFW" in the TSB)

Here is the reason why I think that my segment and learn wheel adapt data is telling me it's the flywheel:

"When the values of segments A and B are around zero, e.g. 0.0003, adaptation is complete.

The value of learning progress must then be smaller than 0.0005.

If the value of learning progress remains at 1.0000, the flywheel is defective.

If the values of segments A and B are also at 1.000, then adaptation has not yet been performed.

In this case, perform a test drive with three deceleration phases in the speed range from 3000 to 1400 rpm." - from misfire troubleshooting guide

Of course, after 150 miles on a DME reset and countless deceleration phases, the values of segment A and B remain around 1.000, and have not changed since, and according to the guide they should be around 0. It never seems to complete adaption since the segments are around 1, but what is strange is my learning prog is 0. Before my rebuild I did read out wheel adapt and it settled on 0.0007, never reaching "good status" below 0.0005.

And if I had an o-scope I could do this test for the DMF and CKS:

RMS.PNG

And this test for the CPS and CAMs:

CPS.PNG

Thanks in advance for your time and help!

Edited by logray
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