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Idle stop solenoid - Now there's your problem

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Old 08-15-2012, 10:40 PM
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Mooser
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Default Idle stop solenoid - Now there's your problem

In the process of changing the manifold I figured it was a good time to see why the idle stop solenoid would hardly move and then toast the fuse.

Noticed flats on the side of the can that looked like it was in a vice or had pliers on it at some point.
Huge resistance on the spade to can measurement.
Bent back the stakes and pulled the core out and found this


The end of the spool is broken off and still inside the can (you can sort of see it there)
The wire is mangled and broken in at least 3 places I can see without digging. Obviously shorted out in many spots. I can see remnants of coil-wrap but nothing there now.

Now just need to decide whether to make a new spool and re-wind or try to find a replacement...

On a more positive note, the intake is almost ready to swap in (as long as I stop looking for problems)
Mooser
Old 08-16-2012, 07:03 AM
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Alan 71
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Hi Mooser,
No need to "look for problems".
They will find you on their own even if you hide under the bed.
Good Luck!
Regards,
Alan
Old 08-16-2012, 10:28 PM
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Mooser
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Apparently these aren't as available as I had hoped.

Made up a mandrel and re-rolled the can back to round, retrieved the end of the spool and since it was a clean break I just used some cyano to put it back, then a little resin into the corner for support.
Check the original wire, 28g, luckily (oddly) I had a spool laying around from an old project

Couldn't get a reading from the old wire so had to go by weight. 56.78g worked out to close to 260' (about 18.2ohms calc)

Mounted lightly to an internal mandrel it up on the old lathe




Spent too much time working out a thread cycle and program look with some averaging to account for the change in diameter of the spool as it wound (really virtually insignificant)









Checked the resistance and it was a little high, stripped off about 10 feet and it looks close enough (17.9). Wrapped it up and soldered the tab





Bench test and everything seems to work just fine, total time invested, probably 3 times what it's worth but I couldn't find one anywhere around here.

Reassemble everything and re-stake the can tomorrow. (went out to a semi-local cruise nite for the evening, not a bad show, I think they said 250 cars)

I think everything is now ready to change the manifold over.


Who says I'm not obsessed

Last edited by Mooser; 11-21-2017 at 08:30 PM.
Old 08-16-2012, 11:08 PM
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SIXFOOTER
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Very nicely done, I thought I was the only one weird enough to do that sort of thing.
Old 08-17-2012, 12:51 AM
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TimAT
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Originally Posted by SIXFOOTER
Very nicely done, I thought I was the only one weird enough to do that sort of thing.
Six, I don't want to pop your bubble there, but you're not alone.
Old 08-17-2012, 04:59 PM
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Mooser
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A bit of powder coat and everything back together (how they originally grounded the coil inside the can is still a bit of a mystery) but it works tickity boo.



Ready to re-install on the new manifold
Another $100 solution to a $5 problem
Mooser

Last edited by Mooser; 11-21-2017 at 08:30 PM.
Old 08-17-2012, 06:06 PM
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SIXFOOTER
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Originally Posted by TimAT
Six, I don't want to pop your bubble there, but you're not alone.
LOL, Cool
Old 08-17-2012, 07:57 PM
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AzMotorhead
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Originally Posted by Mooser
A bit of powder coat and everything back together (how they originally grounded the coil inside the can is still a bit of a mystery) but it works tickity boo.

Ready to re-install on the new manifold
Another $100 solution to a $5 problem
Mooser
Nicely done Mooser. I probably wouold have skipped the math part of figuring distance & resistance and just wound it up.I'm just crazy that way. On a few other solenoids I've seen. There's been a glob of solder at the seam of the can end. presumably this is where the other end of the coil wire grounds to the can
Old 08-17-2012, 08:42 PM
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edk136
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I'll give you credit, most people would have thrown that away and pay at least $150.00 for another one.
Old 08-17-2012, 08:58 PM
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Mooser
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Originally Posted by AzMotorhead
Nicely done Mooser. I probably wouold have skipped the math part of figuring distance & resistance and just wound it up.I'm just crazy that way.
And the end result would have been fine. Usually I've wound coils for specific purposes, transformers etc. so I like having numbers, then I can choose to ignore them

Originally Posted by AzMotorhead
On a few other solenoids I've seen. There's been a glob of solder at the seam of the can end. presumably this is where the other end of the coil wire grounds to the can
That would make sense. I couldn't find anything that looked like a solder spot or crimp. The original wire to the tab looked to be crimped only so I made up a good sized copper contact spring and ran it against the inside wall of the can.

Mooser
Old 08-17-2012, 09:38 PM
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toddalin
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Originally Posted by Mooser
Another $100 solution to a $5 problem
Mooser

My $5 solution to a $5 problem. I can set it to any desired RPM. Mounts to the washer pump usig the existing 1/4" sheet metal screw.



Old 08-17-2012, 11:31 PM
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Those are neat little actuators, what are they from R/C stuff?
Mooser
Old 08-18-2012, 02:03 AM
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Was from Allelectronics
Old 08-25-2012, 11:33 AM
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larrywalk
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Originally Posted by Mooser
A bit of powder coat and everything back together (how they originally grounded the coil inside the can is still a bit of a mystery) but it works tickity boo.



Ready to re-install on the new manifold
Another $100 solution to a $5 problem
Mooser
Mooser - a very nice job on the solenoid rebuild!

Old 08-25-2012, 02:17 PM
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7T1vette
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Now, you just have to get the word processor going and draft up a new label for the body of that solenoid.
Old 08-25-2012, 02:58 PM
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Alan 71
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Hi Mooser,
I've found that once you realize that no SANE person would be trying to fix what you're fixing, it really doesn't matter how much time, and almost how much $, it takes to do it.
SOME PARTS JUST NEED TO BE REPAIRED!
Regards,
Alan
Old 08-27-2012, 07:48 PM
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Originally Posted by 7T1vette
Now, you just have to get the word processor going and draft up a new label for the body of that solenoid.

Old 08-27-2012, 07:49 PM
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Originally Posted by Alan 71
Hi Mooser,
I've found that once you realize that no SANE person would be trying to fix what you're fixing, it really doesn't matter how much time, and almost how much $, it takes to do it.
SOME PARTS JUST NEED TO BE REPAIRED!
Regards,
Alan
My wife calls it stubborn, mule headed and a few other choice terms, I like to think of it as focused
Mooser

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