vr6 12v variable valve timing

[vr6turbo 27]

was down looking at my cams today and noticed the cam trigger is different to all the other ones I

have see before

when I checked the part number  and looked on line the trigger I have is described as a phase sender.

 

Trigger for camshaft position sensor

For vehicles with engine number from 260 001 only

Used for variable valve timing.

my engine number is higher than 260 001 so I should have this part fitted

 

can anyone shed any light on why there are so many trigger points on the part

 I can not see the vr6 having variable valve timing without some way of physically rotating the cam in question

 

 

 

  up to engine number 260 001

 

 after engine number 260 001

Edited January 6, 2015 by vr6turbo

[vr6turbo 27]

come on you vr6 madmen

[Mk3highline 287]

The later one iirc was only used in the states for quick start same as the 24v engines the sensor sees 2points and the wheel has 4

Where you from and what year is your car?

This is the problem I'm having as im using a12v Ecu on a 24v aue and got a cam sensor fault

[Daverse 175]

yes a 24v cam sensor has 4 pickup points instead of two. whether increase of frequency makes for a smoother reading, im not sure.

[vr6turbo 27]

^{the car is a UK vr6  on a R reg 1997}

^{I am swopping the engine and using a obd1 engine}

^{so if this sensor came out of the original car the I would have thought it needs to go back in so the ecu can}

^{receive the correct signal}

[Big J 283]

To put it simply, I have no idea

[Mk3highline 287]

Best thing to do is take out the cam sensor and shine a light in the hole to see which one you have

My car is a late 97 but had the old style

If you have the later type I can swap ecu with you lol win win

[vr6turbo 27]

The question I would like answered is,

was the 12v vr6 golf ever fitted with this sensor arrangement from factory ?

 

I did vag com and its got a fault

 

00515 short to ground

checked the wiring all ok

so there must be a fault with the sensor £56for a bosch one ouch

see what happens when it arrives next week

I will let you know

 

 

 

Edited January 10, 2015 by vr6turbo

[Mk3highline 287]

Yes it was fitted but I'm not sure if it was fitted to any uk cars

You can check by which type cam sensor plug you have I think if it's the rectangular one it's the old type

If you have the rounded corner then it's the later type

I'm not hundred percent sure I could be wrong

Up load a pic of the old sensor?

[vr6turbo 27]

Thanks for the replies

the cam sensor plug is the rounded type

I had a look at the veh reg doc

it was registered in january 1998 so its a very late vr6

I am going to call VW see what they say

Edited January 11, 2015 by vr6turbo

[Mk3highline 287]

Cool that's the same sensor as the 24v aue

Would you mind getting the ecu code off your car for me as that's the ecu I'm in need of to get my car to run right

[vr6turbo 27]

_{Will do at the weekend mate}

_{VW have confirmed the sensor is correct}

_{I gave them my engine number to confirm it}

_{They must have done a trial on the mk3 before they put the system on the mk4}

[vr6turbo 27]

I would like to do the 24v swop some time

does it make a big difference

[Mk3highline 287]

Yes Massive difference!

http://www.vr6oc.com/forum/topic/11043-post-your-rolling-road-results-here/page-8#entry430356

Graph is there with a cam sensor fault so might get bit more

Only problem besides cam sensor is the inlet manifold I have a switch in the car to control it at the moment until I wire in the vafc2 to control it

The torque is insane compared to the 12v

I us d a 4.4kg flywheel which helps in the lower gears

Also I migh be on a winner with getting a new ecu

[vr6turbo 27]

good news all round then

happy days

[vr6turbo 27]

^{the ecu code is from vag com}

^{Control Module Part Number: 021 906 256   Component and/or Version: MOTRONIC M3.8.1  HS V04}

 

^{I have fitted a new sensor after checking the wiring}

^{it still shows a fault}

^{00515 - Camshaft Position (Hall) Sensor (G40)
            29-00 - Short to Ground}

 

^{only thing left is the ecu}

[Mk3highline 287]

Have you changed both the sensor and wheel?

Your using an obd1 engine on your ecu late obd2 ecu

This is the new one I got , will try it today

Edited January 18, 2015 by Mk3highline

[vr6turbo 27]

very nice indeed

that is a late vr6 ecu

 

in answer to your question I have changed both and fitted a new bosch cam sensor, and I have an obd1 engine with duplex chains.

 

 The double cam cog accepts the sensor ring perfectly and is lined up exactly the same as on the obd2 cam, I checked

I have used the  obd1 top cam housing and the clearance between the sensor and the sensor ring looks good

so it should all work fine

 

there is no difference between the obd1 and obd2 engine apart from the top timing chain and tensioners chain guide and upper timing cover

I am using the obd2 throttle body, injectors, engine loom, and all obd2 sensors

 

there are 3 other options as I see it

 

the wiring

 

the timing is off

 

the gap between the sensor and sensor wheel

 

 

 

 

 

I am going to check for a fluctuating signal from the sensor ,recheck the wiring,

if that does not work recheck the timing again,

the only other concern

is the gap between the sensor and ring correct any one know what it should be?

Edited January 19, 2015 by vr6turbo

[Mk3highline 287]

Clear codes and Check if fault is still there with just ignition on engine not running that might eliminate if it's a wiring fault

Good luck mate

You got a picture of the new sensor fitted? I'm sure it will have to sit flush to the head

[vr6turbo 27]

Great idea

thanks mate

 

will try that,  

before I reset the code with the engine running and when I rescanned it, it came straight back.

 

the engine runs really nice and quiet 

if you stab the throttle it hesitates a little

the only fault showing is the one previously posted

[vr6turbo 27]

how did the ECU work out?

[Mk3highline 287]

I have similar problem if I hit throttle on idle but from 1k on it snappy

I got the ecu but it has the immobiliser

So once I get someone with vag comm vcds to reprogram the car will let you know.

I did plug it in to try it and it did start, and got a good feeling as it fired up quicker than normal

Meaning it is recognised the new style quick start cam sensor and phase wheel

[Mk3highline 287]

Vince at stealth did that check with mine

Igniting on and reset there were no faults starts and come straight on

[vr6turbo 27]

Tried the old ignition on trick

it only came back after the car was started

I have measured the sensor to sensor ring gap about 1.7mm

too far away I would say

going to fettle the gap down to 1mm

[vr6turbo 27]

why didn't I just change the chains and tensioners to obd2