Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Shackeng on 13 July 2013, 19:10:36

Title: 3.2 Crank sensor.
Post by: Shackeng on 13 July 2013, 19:10:36
As I've got all the front gubbins out while changing the compressor and condenser, it occurred to me that I could fit my spare crank sensor in place alongside the existing serviceable one, using the umbrella principle that if I have one in place, it will never fail.
Any thoughts? :-\
Title: Re: 3.2 Crank sensor.
Post by: RobG on 13 July 2013, 19:21:09
If you do that Chris, sod`s law your original won`t fail ;D
Title: Re: 3.2 Crank sensor.
Post by: Kevin Wood on 13 July 2013, 19:29:35
If you do that Chris, sod`s law your original won`t fail ;D

.. and when it does, the spare will have perished due to the heat of the engine bay. ;)
Title: Re: 3.2 Crank sensor.
Post by: chrisgixer on 13 July 2013, 19:47:45
I wouldn't fit it until needed. Personally.
Title: Re: 3.2 Crank sensor.
Post by: zirk on 13 July 2013, 21:11:43
Just give it a good talking to whilst your down there. ;)
Title: Re: 3.2 Crank sensor.
Post by: Shackeng on 13 July 2013, 21:32:18
If you do that Chris, sod`s law your original won`t fail ;D

.. and when it does, the spare will have perished due to the heat of the engine bay. ;)

I was working on the idea that the original is designed to cope with the same heat. ??? :-\
Title: Re: 3.2 Crank sensor.
Post by: Kevin Wood on 14 July 2013, 10:37:55
If you do that Chris, sod`s law your original won`t fail ;D

.. and when it does, the spare will have perished due to the heat of the engine bay. ;)

I was working on the idea that the original is designed to cope with the same heat. ??? :-\

It is, but for how long? ;)
Title: Re: 3.2 Crank sensor.
Post by: Shackeng on 14 July 2013, 11:19:40
Ah, are you implying that it is the heat that causes them to fail? I thought that it was just electrickery again. :-\
Title: Re: 3.2 Crank sensor.
Post by: albitz on 14 July 2013, 12:18:22
The wiring runs very close to the exhaust manifold. Its wrapped in a heat shield,which isn't much more than a piece of silver paper.
Over time the heat breaks down the wiring internally until it fails altogether. Hence the advice to route it differently when replacing. :y
Title: Re: 3.2 Crank sensor.
Post by: RobG on 14 July 2013, 12:24:44
The wiring runs very close to the exhaust manifold. Its wrapped in a heat shield,which isn't much more than a piece of silver paper.
Over time the heat breaks down the wiring internally until it fails altogether. Hence the advice to route it differently when replacing. :y
Wouldn`t it be prudent to use something like this when fitting a replacement then ???
http://www.ebay.co.uk/itm/20mm-High-Temperature-Heat-Resistant-Kapton-BGA-Tape-Polyimide-/111108471420?_trksid=p3284.m263&_trkparms=algo%3DSIC%26its%3DI%26itu%3DUCI%252BIA%252BUA%252BFICS%252BUFI%26otn%3D21%26pmod%3D290887988653%26ps%3D54
Title: Re: 3.2 Crank sensor.
Post by: chrisgixer on 14 July 2013, 12:40:15
Unless the new sensor is faulty, any v engine owner will only need to fit one sensor per cars life. As said, once the sensor is re routed, it sits in a considerably cooler environment.
Title: Re: 3.2 Crank sensor.
Post by: Shackeng on 14 July 2013, 12:46:41
OK, so how about I fit the spare in place but using the new recommended routeing? Then if it fails while I am traveling away or abroad, which is when I use the 3.2 the most, it will just need connecting at each end. :-\ :-\ :-\
Title: Re: 3.2 Crank sensor.
Post by: chrisgixer on 14 July 2013, 12:52:26
OK, so how about I fit the spare in place but using the new recommended routeing? Then if it fails while I am traveling away or abroad, which is when I use the 3.2 the most, it will just need connecting at each end. :-\ :-\ :-\

Its not routing it that's awkward though. At roadside, you still need to jack the car, get under there lieing on the ground to unbolt the sensors end, fit the new one, and bolt it back in. The rest, that your proposing is a two minute easy job by comparison. Your also introducing the possibility of debris, rust, corrosion in the plug end. Or possible damage to the sensor end as it will need to be tied up somewhere.

Your sensor, but not worth the risk IMO. But each to their own.

Keep it safe in the box, or there's a chance of two non working sensors when you really need it.
Title: Re: 3.2 Crank sensor.
Post by: henryd on 14 July 2013, 12:54:06
OK, so how about I fit the spare in place but using the new recommended routeing? Then if it fails while I am traveling away or abroad, which is when I use the 3.2 the most, it will just need connecting at each end. :-\ :-\ :-\

Its not routing it that's awkward though. At roadside, you still need to jack the car, get under there lieing on the ground to unbolt the sensors end, fit the new one, and bolt it back in. The rest, that your proposing is a two minute easy job by comparison. Your also introducing the possibility of debris, rust, corrosion in the plug end. Or possible damage to the sensor end as it will need to be tied up somewhere.

Your sensor, but not worth the risk IMO. But each to their own.

Keep it safe in the box, or there's a chance of two non working sensors when you really need it.

I agree with Chris,I wouldn't fit it till needed as following alternative routing makes it easy to fit anyway :y
Title: Re: 3.2 Crank sensor.
Post by: chrisgixer on 14 July 2013, 12:55:05
If your considering partially fitting. IMO it would be better to fit it new completely, as the new routing, job jobbed.

Title: Re: 3.2 Crank sensor.
Post by: Shackeng on 14 July 2013, 14:29:25
OK, so how about I fit the spare in place but using the new recommended routeing? Then if it fails while I am traveling away or abroad, which is when I use the 3.2 the most, it will just need connecting at each end. :-\ :-\ :-\

Its not routing it that's awkward though. At roadside, you still need to jack the car, get under there lieing on the ground to unbolt the sensors end, fit the new one, and bolt it back in. The rest, that your proposing is a two minute easy job by comparison. Your also introducing the possibility of debris, rust, corrosion in the plug end. Or possible damage to the sensor end as it will need to be tied up somewhere.

Your sensor, but not worth the risk IMO. But each to their own.

Keep it safe in the box, or there's a chance of two non working sensors when you really need it.

Point taken, and exactly why I asked. :y :y :y
Title: Re: 3.2 Crank sensor.
Post by: VXL V6 on 14 July 2013, 21:47:08
Funny someone has asked this, My 3.2 suffered a failed crank sensor at 91K a couple of weeks back, so I've been pondering about fitting a brand new sensor on my new project car even though it hasn't yet failed.....

I think it's probably worth doing as the way a 3.2 or 2.6 crank sensor fails with no codes and no warning is not much fun....
 
Title: Re: 3.2 Crank sensor.
Post by: Entwood on 14 July 2013, 22:16:40
Carry new sensor in boot. Carry OOF write up in the same box. When it fails use breakdown company to change it ......  seeemples .. :)
Title: Re: 3.2 Crank sensor.
Post by: VXL V6 on 14 July 2013, 22:28:41
Carry new sensor in boot. Carry OOF write up in the same box. When it fails use breakdown company to change it ......  seeemples .. :)

Trouble is.. Been there, done that, If my 3.2 one lasted 11 years and 91K (It was the original) and the other car is a year younger but has 10K more on the clock then I reckon I'd be prudent to change it in advance.
Title: Re: 3.2 Crank sensor.
Post by: Shackeng on 14 July 2013, 22:34:26
I'm tempted to put the new one on now and get another spare. The car is 12 years old but has only done 54K. :-\
Title: Re: 3.2 Crank sensor.
Post by: Kevin Wood on 14 July 2013, 22:44:33
Unless the new sensor is faulty, any v engine owner will only need to fit one sensor per cars life. As said, once the sensor is re routed, it sits in a considerably cooler environment.

<cough!> Mine's on number 3. All genuine. ::)
Title: Re: 3.2 Crank sensor.
Post by: chrisgixer on 14 July 2013, 23:58:18
Unless the new sensor is faulty, any v engine owner will only need to fit one sensor per cars life. As said, once the sensor is re routed, it sits in a considerably cooler environment.

<cough!> Mine's on number 3. All genuine. ::)
Bah, dodgy fitter. ;) ;D

Had one go on the 2.5 cdx. And bought one which had failed. Of all the omegas I've had, that's it.
Title: Re: 3.2 Crank sensor.
Post by: chrisgixer on 14 July 2013, 23:59:00
Absolutely should not have said that should I. :(
Title: Re: 3.2 Crank sensor.
Post by: Kevin Wood on 15 July 2013, 00:00:25
Absolutely should not have said that should I. :(

Tick... Tock... Tick... Tock... ;)
Title: Re: 3.2 Crank sensor.
Post by: chrisgixer on 15 July 2013, 00:06:28
Speaking of pre empting road side failures.

Don't forget the heated seat fault that blows fuse 15. Which then cuts the ignition and dash lights. Engine will crank, but not fire.

If you get two minutes wip the seat out and trace the heated seat back loom to the side frame under the seat base, next to the heated seat controler unit.

Side frame chafes the wires through and shorts the circuit. It can pop the fuse at any time when the driver sits in the seat.

(Thanks again to RobG and others for help with that one. :) )
Title: Re: 3.2 Crank sensor.
Post by: chrisgixer on 15 July 2013, 00:07:33
Absolutely should not have said that should I. :(

Tick... Tock... Tick... Tock... ;)
Yep, I better stick my small trolley jack in the boot before I go to work tomorrow. Oh dear. ::)