Chief Delphi - Blown CIM?

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Chief Delphi (http://www.chiefdelphi.com/forums/index.php)

- Motors (http://www.chiefdelphi.com/forums/forumdisplay.php?f=52)

- - Blown CIM? (http://www.chiefdelphi.com/forums/showthread.php?t=137369)

Ether

01-06-2015 21:53

Re: Blown CIM?

Quote:

Originally Posted by evand4567 (Post 1485328)

We tested the resistance with an ohmmeter and found the degraded ones to be between .3 and .5

.3 and .5 what? ohms? milliohms?

Quote:

while the new CIM varied between 5-15

5-15 what?

Quote:

Now for the unscientific part: we direct drove a wheel on and found a significant reduction in RPM noticeable to the naked eye. The sound motor sounded significantly slower as well.

That's arguably more scientific than measuring resistance.

Ether

16-06-2015 14:45

Re: Blown CIM?

Quote:

Originally Posted by evand4567 (Post 1485328)

We tested the resistance with an ohmmeter and found the degraded ones to be between .3 and .5, while the new CIM varied between 5-15 depending on it's position which is strange and I don't really understand what was going on.

Can you please tell us what the .3, .5, and 5-15 numbers are?

evanperryg

16-06-2015 19:20

Re: Blown CIM?

Quote:

Originally Posted by Ether (Post 1484850)

The above is ambiguous for 2 reasons:

1) Was that 20a total for all 6 CIMs? Because if so, that's in the ballpark for normal.

2) What do you mean by "no load" ?? Were the CIM output shafts completely unattached to anything? Or were they still mounted in a gearbox?

What I find most ambiguous about this is... how were there 6 dead motors in your drivetrain?

Richard Wallace

16-06-2015 20:20

Re: Blown CIM?

Quote:

Originally Posted by evanperryg (Post 1487025)

What I find most ambiguous about this is... how were there 6 dead motors in your drivetrain?

Long ago I ceased being amazed when motors, presumed dead, are later found very much alive -- following replacement of wiring, electrical hardware, or code. ;)

CIMs can be killed and I have seen it; however, I have never seen six killed at the same time.

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