Static test for ACR's while on the bike?
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Grand HDF Member
Joined: Jun 2017
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From: Near Yosemite
So I was just sitting inside the house taking a break when it dawned on me that the 12 volts that I supplied was to the actual ACR's, not the ECM, lol! I did read across the two wires from the ECM with my meter, but that was it. But yeah, the 12 volts was applied to the actual ACR's.
Seasoned HDF Member
Joined: Apr 2011
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From: W. Texas
12 v Along with a ground is required to the wire for them to work. One + and One -
The circuit is not grounded through the ACR s body.
WP
The circuit is not grounded through the ACR s body.
WP
Last edited by WP50; Feb 9, 2025 at 05:26 PM.
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Grand HDF Member
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From: Near Yosemite
No, nothing. I'm wondering if they may be stuck with carbon and burnt oil from the breathers. I just built bypasses for that. I ran a borscope through the plug holes and it looks kind of caked on top of the Pistons in there. That's what makes me wonder about the actual ACR's being stuck. I'm going to assume if they're stuck shut, there would be no actual click because nothing's moving. I just redid this whole top end 35,000 miles ago so it kind of pisses me off that I didn't do breather bypasses while I had the top end off.
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Thanks, but Im well aware of how to supply 12 VDC to a component.
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Grand HDF Member
Joined: Jun 2017
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From: Near Yosemite
OK..... Got it!! Evidently they were stuck a little bit. When I put voltage to them last time I only connected the leads for a few seconds and then remove them. This time I ran one wire to ground and the other one to the positive lead. After tapping the positive lead on the connector a half dozen times or so, the front ACR came loose and started responding. The back one, not so much. I tried tapping the positive lead but ended up sticking it onto the terminal steady and then tapping the actual ACR with my 3/8 Drive Extension until it cleared and started clicking as well. So evidently, they were stuck like I thought maybe so. So next time, I know how to either test them, or clear them. I'll find out if the bike starts easier in a couple weeks when I get this thing back together. Still waiting on parts . Thanks for all your help Fellers! I totally appreciate you guys!
MJ
MJ
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From: Oklahoma
How long since the bike ran last? Just wondering if you might need to repeat the "unsticking" procedure again before you button it up.
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Grand HDF Member
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From: Near Yosemite
3 weeks tops...... But if after all this, if during start up, the engine quits spinning for that 1/2 of a second pause because of built up compression, I'll verify that the ARC's are still clicking, or not, and look at something else as the cause. But they were stuck shut right now for sure! I'm just SUPER glad that I did not have to pull them out of the heads. That wasn't really on my list of things to get this month, lol!