Vacuum switch
Thread Starter
|
Advanced
Joined: Sep 2010
Posts: 71
Likes: 0
Vacuum switch
I mentioned this in a different thread but my vacuum switch isn't connected to the ignition control module.
89 sport deluxe. I know that the vacuum line goes to the carb but the VOES or switch whatever is mounted directly behind the carb goes to ground and to the ignition control module.
Question of the day is where is the ignition control module? Because I have the wire that is suppose to be plugged in from the vacuum but no other wire to connect it to.
Or can it be wired to something else given it's proximity to everything under the seat.
89 sport deluxe. I know that the vacuum line goes to the carb but the VOES or switch whatever is mounted directly behind the carb goes to ground and to the ignition control module.
Question of the day is where is the ignition control module? Because I have the wire that is suppose to be plugged in from the vacuum but no other wire to connect it to.
Or can it be wired to something else given it's proximity to everything under the seat.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
Your question begs others! Does your bike run well? If it does, you may have an aftermarket ignition module, as the factory one depends on the VOES to provide advance/retard timing under certain conditions. Some aftermarket modules work fine without a VOES, but the stock one doesn't. The stock module is a black block about the size of a pack of cigarettes, held on by a bolt at each end to a flat surface - there aren't many places it can hide!
Thread Starter
|
Advanced
Joined: Sep 2010
Posts: 71
Likes: 0
Bike used to run well. I had some other posts but here is where I am I'm my constant rebuild here.
Gas poured out of carb, rebuilt it and we seem to be all good there.
The positive plug that should be going to my voes vacuum switch has never been plugged in as long as I owned it. Before the carb rebuild it worked like a champ.
Now the engine cuts out while riding and not under a lot of throttle. It will actually just shut off while idling also.
And my battery still doesn't charge which I can't figure if it's regulator or stator but I have done the stator test and it cranks AC
Any other thoughts? Or helps? Do you think the vacuum switch is that big a deal?
Gas poured out of carb, rebuilt it and we seem to be all good there.
The positive plug that should be going to my voes vacuum switch has never been plugged in as long as I owned it. Before the carb rebuild it worked like a champ.
Now the engine cuts out while riding and not under a lot of throttle. It will actually just shut off while idling also.
And my battery still doesn't charge which I can't figure if it's regulator or stator but I have done the stator test and it cranks AC
Any other thoughts? Or helps? Do you think the vacuum switch is that big a deal?
Outstanding HDF Member
Joined: Oct 2009
Posts: 2,488
Likes: 30
From: Maryland near DC
I would get the charging issue fixed first as it can cause the other issue...have you tested the battery to see if it will keep/hold a charge...next check the stator, there are guidlines on how to do that in the hd repair manual...after that check the regulator ...my guess is it is either the battery or the regulator..
Trending Topics
Thread Starter
|
Advanced
Joined: Sep 2010
Posts: 71
Likes: 0
I would get the charging issue fixed first as it can cause the other issue...have you tested the battery to see if it will keep/hold a charge...next check the stator, there are guidlines on how to do that in the hd repair manual...after that check the regulator ...my guess is it is either the battery or the regulator..
Going to check regulator tonight. Battery is brand spanking new so not that.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Thread Starter
|
Advanced
Joined: Sep 2010
Posts: 71
Likes: 0
Regulator seems to pass the test. Replacing it anyways but now I'm thinking not charging and all else considered maybe my circuit breaker is bad so I'm looking to figure out how to check that out. One of these days I will get to ride this bike I have pretty much completely rebuilt.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
As for your charging system there are two Stickies in the Tech Electrical section that will guide you through a proper check, which should identify if you have a problem and what it is. Don't just replace stuff without checking!