Author Topic: Cam Position Sensor (Read 2263 times)

bacongrease · « **on:** July 03, 2020, 12:12:03 PM »

Where is the Cam Position Sensor located on the 2004 Stone. I cant find it in the wiring diagram or the exploded parts.

Is called something else? ?

thank you,

guzzisteve · « **Reply #1 on:** July 03, 2020, 12:27:58 PM »

It's in front of LH cylinder on side of block, next to front chain cover & cam.

In parts book look for page of Electronic Devices and it's #16--- GU 01721600

Wiring is usually tied to frame in a bundle cause it's long & has a wire clip to release(maybe) from memory.

bacongrease · « **Reply #2 on:** July 03, 2020, 01:06:23 PM »

[okay, found it, thank you

BTW, what is the connection ton just above it. Thanks again.

.[/email

]

guzzisteve · « **Reply #3 on:** July 03, 2020, 03:02:58 PM »

To the right & up above leaking oil is pressure sender.

Vagrant · « **Reply #4 on:** July 03, 2020, 03:08:29 PM »

Quote from: bacongrease on July 03, 2020, 01:06:23 PM

[okay, found it, thank you

BTW, what is the connection ton just above it. Thanks again.

.[/email

Kick stand switch was up there too. Watch out it will have shims under it.

]

bacongrease · « **Reply #5 on:** July 03, 2020, 05:18:10 PM »

Quote from: guzzisteve on July 03, 2020, 12:27:58 PM

It's in front of LH cylinder on side of block, next to front chain cover & cam.

In parts book look for page of Electronic Devices and it's #16--- GU 01721600

Wiring is usually tied to frame in a bundle cause it's long & has a wire clip to release(maybe) from memory.

Well hummm, I pulled the sender, but there are not 2 pins, just one small copper spot in the middle. Unless you meant disconnect the electrics ? ?

I suppose it will leak now. oh

guzzisteve · « **Reply #6 on:** July 03, 2020, 07:47:09 PM »

Why where you looking for the sensor? To clean it? Seal it with 3bond or problack.

When book says pins it is meant for the plug in loom.

bacongrease · « **Reply #7 on:** July 03, 2020, 09:05:50 PM »

Okay, thank ya'll..

bacongrease · « **Reply #8 on:** July 04, 2020, 07:33:30 PM »

what should the reading show when tested ? ?

thank you....

Tom · « **Reply #9 on:** July 04, 2020, 07:54:48 PM »

How to Test Crankshaft and Camshaft Position Sensors

https://www.youtube.com/watch?v=RvuzZJqQDf4

not-fishing · « **Reply #10 on:** July 04, 2020, 10:04:49 PM »

Be careful with the position sensor, they have a set distance tolerance window from the cam gear.

If you buy a new one you'll have to make sure you get the same length.

Usually the sensor works or it doesn't. I had a problem with a minor oil leak that I was chasing.

Tom · « **Reply #11 on:** July 05, 2020, 01:45:52 PM »

A new o-ring comes with a new sensor. That should be used. Hopefully a new sensor works but being electronic, it either does or doesn't. If the auto industry is any indication, you could get a aftermarket one that doesn't work or will fail.

lucky phil · « **Reply #12 on:** July 05, 2020, 06:05:35 PM »

Quote from: Tom on July 05, 2020, 01:45:52 PM

A new o-ring comes with a new sensor. That should be used. Hopefully a new sensor works but being electronic, it either does or doesn't. If the auto industry is any indication, you could get a aftermarket one that doesn't work or will fail.

You know in the case of the cam sensor this isn't true. There have been many,many cases of people experiencing running issues with this sensor aside from total failure. They often only give trouble with a hot/warmed up engine, when cold they are fine. The issues in this case are often severer intermittent misfiring and poor running. They can and do break down with heat but are ok cold. Setting the gap too wide also can cause running issues.
I recently bought 2 new units from China for a newly overhauled Daytona engine I've put together. They cost me $15us each plus postage. The quality looked absolutely fine and so far it's been fine operationally.
If you do a part number search on these you'll find many people sell these sensors aftermarket for around $40us and more, and these would be Chinese made units as well as the OEM ones sell for stupid money.They are so commonly used on many different engines that I'm sure if the Chinese made ones weren't reliable the roads would be littered with stopped vehicles. I'm not even sure Magneti Marelli actually still makes them. What genuine ones available could well be old unsold stock.

Ciao

bacongrease · « **Reply #13 on:** July 06, 2020, 05:37:27 PM »

Quote from: Tom on July 04, 2020, 07:54:48 PM

How to Test Crankshaft and Camshaft Position Sensors

https://www.youtube.com/watch?v=RvuzZJqQDf4

thanks Tom,,,

I don't know why I wasn't thinking to look there first.

I go to YouTube all the time for inst. for everything, hot water heaters,
whatever.

Don

Tom · « **Reply #14 on:** July 06, 2020, 05:38:41 PM »

Good luck!

bacongrease · « **Reply #15 on:** July 06, 2020, 06:08:12 PM »

Wow...There is quite a learning curve for the new Guzzi owner.
Just to ID all the parts, trace all the wiring, etc.
On top of buying a non-running bike . I have older Hondas and a Harley that are simple, this EFI is so different.

Tom · « **Reply #16 on:** July 06, 2020, 06:23:20 PM »

Y'ep.

lucky phil · « **Reply #17 on:** July 07, 2020, 02:58:16 AM »

Quote from: bacongrease on July 06, 2020, 05:37:27 PM

thanks Tom,,,
I don't know why I wasn't thinking to look there first.
I go to YouTube all the time for inst. for everything, hot water heaters,
whatever.

Don

Yep and you still wont know if it works at 90 deg C engine temp. Or you could just spend 40 bucks on a new one.

Ciao

bacongrease · « **Reply #18 on:** July 07, 2020, 07:59:32 AM »

I haven't found any for $40 bucks, twice that is all I found.

guzzisteve · « **Reply #19 on:** July 07, 2020, 08:31:21 AM »

A 98EV old customer is getting one right now from ebay or amazon from EU for $32 for a car. Same exact sensor. He just did this a couple years ago for the red dot model, he has 2 EV's.
He's had no problems w/automotive same sensors.

Tom · « **Reply #20 on:** July 07, 2020, 12:49:58 PM »

Quote from: lucky phil on July 07, 2020, 02:58:16 AM

Yep and you still wont know if it works at 90 deg C engine temp. Or you could just spend 40 bucks on a new one.

Ciao

What would be your solution??

lucky phil · « **Reply #21 on:** July 07, 2020, 06:48:24 PM »

Quote from: Tom on July 07, 2020, 12:49:58 PM

What would be your solution??

As I said, buy a new one and save yourself the drama. These sensors aren't a "life of the engine" component. The plastic housings harden after time and heat cycles as does the wiring close to the sensor. They have a lifespan. If you're prepared to shop around you can buy Chinese made repro ones for $15 US and i have first hand experience with them, and they work fine. Unless you buy an OEM one for around $180 US the $40-60 US one will be a Chinese repro anyway.
Many electronic engine sensors and even complete ECU's can be fine when cold but break down when subjected to 90-100 deg C engine temps esp when they have some age and miles on them. I've even experienced Ducati ECU's that ran fine for the first 20 min or so then gave trouble. This was confirmed buy extensive troubleshooting of the main board where a dry joint was found. After repair it was stable.
I've just replaced the ECU in my V11/V10 after the baro sensor failed. I only knew about it because there was no baro reading from Guzzidiag. The software had reverted to a default setting. I could have got inside it and replaced the sensor as I know what it uses but bought a new ecu as I didn't have time to wait for parts to repair the old one. Electronics aren't always work or dont work. My days in aviation and avionics also taught me this.

Here's the Chinese version

Ciao

Tom · « **Reply #22 on:** July 07, 2020, 07:04:36 PM »

You misread my post. All I posted was a vid on how to test a crankcase sensor. YMMV

There was no other info pass that.

lucky phil · « **Reply #23 on:** July 07, 2020, 07:37:30 PM »

Quote from: Tom on July 07, 2020, 07:04:36 PM

You misread my post. All I posted was a vid on how to test a crankcase sensor. YMMV There was no other info pass that.

Ok Tom, I'm just pointing out that anyone that watches that video and tests their sensor and it passes don't automatically assume it's fine. If I post a link like that I tend to highlight the shortcomings and caveats in the testing if there is any just so people aren't led down the wrong path.

Ciao

Tom · « **Reply #24 on:** July 07, 2020, 07:53:54 PM »

Good point. What someone does with the info gained is their responsibility for that usage or non-usage.

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Author Topic: Cam Position Sensor (Read 2263 times)