Cam sensor
- Thread starter Titan7101
- Start date
Basically, a cam sensor is pulse readout. Coil wires waiting for a magnet to sweep over it real close. Take an ohm meter, set it to 'a/c' volts. Crank then engine over. Follow the meter swing or if a digital, watch the numbers rise. No numbers/swing, you have a bad hall effect going.
If you knew a good known cam sensor, set the ohm meter on 'ohms resistance' scale. Match the book's spec number. If that is even 1 number off [above or below] the chart in the book = Junk!
If you knew a good known cam sensor, set the ohm meter on 'ohms resistance' scale. Match the book's spec number. If that is even 1 number off [above or below] the chart in the book = Junk!
DRBarnhart
Insert title here...
While I understand what you're saying Sven and there are some types of inductive pickups that do use a magnet to sweep its "field" through a coil as you suggest, the cam sensor in a Big Dogs is a Hall Effect device that uses a slotted cup to break the magnetic field created by the sensor itself.
This part we agree on! :up:
And from here on out we disagree on cam sensor troubleshooting.
Here's how you separate the good from the bad cam sensor...
1. Disconnect the cam sensor from the ignition module.
2. Take out your trusty multimeter and set it to the RX1 scale.
3. Now while touching the sensor backing plate with the negative meter lead touch the positive meter lead on each of the three wires of the sensor connector (red, black, & green). If you get continuity from the backing plate to any of them the sensor is bad.
If it passes the first test...
1. With your meter still at the same settings touch the positive meter lead to the green wire and the negative meter lead to the black wire. If you get an "open" it's good. (Any resistance is "bad")
2. Then take the positive meter lead and touch the black sensor wire while touching the negative meter lead to the green wire. In this case an "open" is bad. A reading somewhere around 300 - 750 Kohms is what you're looking for.
So what values did you get in each step?
Dennis
This is apples to apples. A Macintosh as opposed to a granny apple?
Now, apples to oranges would be that you magnetize the field coil to create the magnetic field. We no longer have a hall effect sort of speak in the static, non-powered. But to use hall effect guys, it does not matter an ABS tone window off of a wheel, a cut in a disc off the crank, or the cam, we have plenty of hall effects happening on [A] computer bike.
Like I said, if we have 299 ~ BREAK OUT OF ~ 751 = Junk!
I'd like to see a shop manual on this bike. Especially the ignition system. :zdrool:
DRBarnhart
Insert title here...
Sven,
It serves no useful purpose for you to hijack yet another thread with a superfluous discussion of Hall Effect, magnetism, field coils, or anything else that doesn't directly help Titan7101 get his bike running!
Dennis
It serves no useful purpose for you to hijack yet another thread with a superfluous discussion of Hall Effect, magnetism, field coils, or anything else that doesn't directly help Titan7101 get his bike running!
Dennis
DR,
This is a complex subject. This is no longer points and coils = No spark. There are a lot of no spark scenarios that involve the cam sensor and other hall effect parts to look for.
One can find a cam sensor code and it may turn out to be a phantom code. What might occur is a crank sensor tone wheel can come loose. This is one example of knowing what and who to chase.
I told the owner not to buy a cam sensor. He did. That says, 'No won list'inns to turtle.' The list is dis sting wish you would relax there guy. I have a few members that enjoy reading or want to more learn about the generic computer bike.
I start to question your expertise, you may dis say point when I being to point out the complex is too simple. You know you are beating a dead horse when you act the thread police. This is bike specific. You tit, I'll tat you go messing threads up. Look at the way the OP was treated, 'don't thread on me' fella.
Open your eyes you begin to perp the victim is the victim has venom for the perpolice LOL
This is a complex subject. This is no longer points and coils = No spark. There are a lot of no spark scenarios that involve the cam sensor and other hall effect parts to look for.
One can find a cam sensor code and it may turn out to be a phantom code. What might occur is a crank sensor tone wheel can come loose. This is one example of knowing what and who to chase.
I told the owner not to buy a cam sensor. He did. That says, 'No won list'inns to turtle.' The list is dis sting wish you would relax there guy. I have a few members that enjoy reading or want to more learn about the generic computer bike.
I start to question your expertise, you may dis say point when I being to point out the complex is too simple. You know you are beating a dead horse when you act the thread police. This is bike specific. You tit, I'll tat you go messing threads up. Look at the way the OP was treated, 'don't thread on me' fella.
Open your eyes you begin to perp the victim is the victim has venom for the perpolice LOL
Oops, wrong thread. This was a question with zero input, many lurks. Now all of a sudden... There was a devil worship fixing an electrical problem before I showed up. WATT kind of pace you running ear? LOL
Hey, yank off the diaper and put on some pants... It's only a bike question for geezeISaid something or other...
Hey, yank off the diaper and put on some pants... It's only a bike question for geezeISaid something or other...
DRBarnhart
Insert title here...
A little story for your enjoyment Sven...
"After eating an entire bull, a mountain lion felt so good he started roaring. He kept it up until a hunter came along and shot him... The moral: When you're full of bull, keep your mouth shut."
- Will Rogers (1879 - 1935)
Dennis
A little story for your enjoyment Sven...
"After eating an entire bull, a mountain lion felt so good he started roaring. He kept it up until a hunter came along and shot him... The moral: When you're full of bull, keep your mouth shut."
- Will Rogers (1879 - 1935)
Dennis
AMEN
LARS
sippin & cruzin
Here we go!!:loony:
DRBarnhart
Insert title here...
DR,Sven,
It serves no useful purpose for you to hijack yet another thread with a superfluous discussion of Hall Effect, magnetism, field coils, or anything else that doesn't directly help Titan7101 get his bike running!
Dennis
I have no stats on how many times the OP is a no show on his own thread; after all the info is addressed by the members. You are still waiting here so I can now explain a little more about cam signal theory.
Think about how simple checking a cam sensor is as opposed to knowing when it goes belly up?
If the bike continues to start and run, it says the cam sensor is a good known part. No need to check resistance. It is like saying, I might as well check all the other sensors, they work too, no code/starts every time.
This is like international waters. The OP abandoned ship. No jacking here, but watching the OP give it the old'wazoo
to your question. It is like a 'goodeeduntothers.'The golden rule and all that.
The moral of the story? Don't hold your breath waiting :up: :roll:
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Nukeranger
Nukeranger
Dennis,
I am going to guess that after Sven's convoluted response(s) to a simple question "How do you check the cam sensor on an 02 Big Dog Bulldog with a Thunderheart ignition?", he decided not to waist his time on this thread.
Nuke
I am going to guess that after Sven's convoluted response(s) to a simple question "How do you check the cam sensor on an 02 Big Dog Bulldog with a Thunderheart ignition?", he decided not to waist his time on this thread.
Nuke