crank sensor V6 replacement

[Diamond Black Geezer]

My theory (theory alone, not belief) is if a pattern sensor routed well away from the exhaust, with a heat shield/foil added would last fine. However, to be scientific this would involve buying a pattern, leave the original in place, and see how it goes. Witht he option of simply re-plugging in the original if any engine issues appear.

Please keep us updated, as one of the worries is that genuine CSs will eventually dry up, as Omega parts are already starting to become unobtainable from Dealers. Once genuines cease to be avaiable the only option will be pattern. That being the case, which pattern will be the question we'll all be asking. 

[zirk]

Bad batch of genuine sensors maybe 
What's the warranty on a genuine sensor ?

I think its 100k miles, but might be if fitted by a Vx Dealer. 

[omega2018]

i'm now tempted to install the delphi when it arrives and keep the pattern as spare.

incidentally i scanned for codes and found none, but the pedal trick threw up as expected 0335 'CrankshaftPosition sensor "A" circuit malfunction'

i will put a separate post about that.

[Sir Tigger KC]

i'm now tempted to install the delphi when it arrives and keep the pattern as spare.

incidentally i scanned for codes and found none, but the pedal trick threw up as expected 0335 'CrankshaftPosition sensor "A" circuit malfunction'

i will put a separate post about that.

[Diamond Black Geezer]

Makes me wonder there's the truth, and the truth, as it were.. Like, person xyz says 'I fitted genuine rocker gaskets, and they still failed" - but the truth being, he didn't clean the breathers out as well, so they were bound to fail.

Again, fitting a genuine Vx crank sensor, and leaving it in the original factory routing, next to the exhaust will mean it fails in, what?, 100k? Now, route a pattern cs in the same way and it may fail in days, or months.. or years. As has been said, some don't come with the foil shield. Now, route that same cs away from the heat and who knows? maybe it won't last any longer, but logic dictates it will. I'm not disagreeing with the experience of many, many OOFers who have had bad experiences with pattern sensors, but like I say above, it may come the day when all we can fit are pattern.

May I ask the OP to ensure the new pattern sensor has both foil shield, and is well routed away from the extreme heat of the manifold, and then give us a progress report in 6 months/1 year / upon such time as it fails.   

[Kevin Wood]

The thing with these (and cam cover gaskets) is that, regardless of the mitigating factors of which you speak, we have seen a  consistent pattern over the years. Fit pattern, and it fails quickly (or often doesn't work at all) fit genuine and it's reasonably reliable.

My car is on its' 3rd crank sensor in 184K miles. First one failed at about 50K, if memory serves. Second one probably lasted double that, with the cable re-routed away from the heat.

All sensors genuine, from a Vauxhall dealer, because that's the other factor.. Many people think they are buying genuine because the factor from whom they buy it tells them it's genuine.

[Diamond Black Geezer]

Fair do's 

Now I'm thinking 'my car's on her 2nd cs, after 180,800 miles'... oooh, eck! ticking time bomb!

[Kevin Wood]

Fair do's 

Now I'm thinking 'my car's on her 2nd cs, after 180,800 miles'... oooh, eck! ticking time bomb!

Oh, and I dissected one of my failed sensors, and it was the sensor coil itself that had failed.

[Diamond Black Geezer]

I've been keeping my eye out for a good low mileage cs for a while, now. I very nearly had one at the scrappy, but couldn't get it out for love nor money. Wish I'd known when they were taking the engine out, before cubing it  I found went back a few days later to find half of it in the mud what must have been literally minutes after they'd took the engine out. Ah well. 

[Terbs]

Just a quick question...
As DBG says...we could be on pattern parts soon, but.....is this crank sensor unique to the Omega. Meaning, is this part (same number or modified) fitted to any other Vauxhall/Opel. Using this idea, as VX once told me, the rear pads on my Senator, were the front brakes on another later smaller model, can't remember which, offhand. Suggesting that parts would be manufactured longer

[Diamond Black Geezer]

I heard the rear brake pads on a Lotus Carlton are the same as the front on a (Classic) mini. Off topic, really, I know, but I know what you mean.

http://www.partsbase.org/parts/ope-6238126/

Sadly it's Omega-specific. As we know, some Omega V6 crank sensors don't even work right on other Omega V6s, 

HT leads on the other hand, if you ever see any Vectra B V6 ones going cheap, get them. They're not identical, but they do fit. 

[omega2018]

Just a quick question...
As DBG says...we could be on pattern parts soon, but.....is this crank sensor unique to the Omega. Meaning, is this part (same number or modified) fitted to any other Vauxhall/Opel. Using this idea, as VX once told me, the rear pads on my Senator, were the front brakes on another later smaller model, can't remember which, offhand. Suggesting that parts would be manufactured longer

here are my notes on xrefs for the V6 rounded plug crank sensor.  didn't help me a lot though and i don't guarantee it is 100% correct:

2.6/3.0/3.2V6 Petrol Models          90540743   

ESPART    1651060
BOSCH    0 261 210 131
C.I.    XREV345
EPS    1.953.284
FACET    9.0284
GENERAL MOTORS    1238740
90540743
KW    453 284
LUCAS CAV    SEB969
METZGER    0902194
OPEL    1238740
STANDARD    50 12225 01375 3
VEMO    V70-72-0367


Cross Interchange Part No. for: OPEL 90540743
Downloand
Factory    Number    Cross Interchange Type    Relevance
OPEL   1238740   Indirect Cross Interchange   12
VEMO   V40720367   Indirect Cross Interchange   12
HOFFER   7517318   Indirect Cross Interchange   11
AUTOMEGA   3012380740   Indirect Cross Interchange   11
MEAT & DORIA   87318   Indirect Cross Interchange   11
BOSCH   0261210131   Indirect Cross Interchange   11
FACET   90284   Indirect Cross Interchange   11
STANDARD   18932   Indirect Cross Interchange   10
METZGER   0902194   Indirect Cross Interchange   8
MAXGEAR   240057   Indirect Cross Interchange   5
GENERAL MOTORS   90540743   Indirect Cross Interchange   5
SIDAT   83327   Indirect Cross Interchange   5
FISPA   83327   Indirect Cross Interchange   5
SAAB   90494182   Indirect Cross Interchange   4
VEMO   40720367   Indirect Cross Interchange   3
HAVAM   1953284   Indirect Cross Interchange   3
LUCAS ELECTRICAL   SEB969   Indirect Cross Interchange   3
STANDARD   18932   Indirect Cross Interchange   3
DELPHI   SS10809   Indirect Cross Interchange   3
OPEL   90494182   Indirect Cross Interchange   3
OPEL   01238740   Indirect Cross Interchange   2
GENERAL MOTORS   90494182   Indirect Cross Interchange   2
INTERMOTOR   18932   Indirect Cross Interchange   2
STANDARD   EPS054   Indirect Cross Interchange   2
KW   453284   Indirect Cross Interchange   1
EPS   1953284   Indirect Cross Interchange   1
HAVAM   1953284   Indirect Cross Interchange   1
AUTOMEGA   1112380740   Indirect Cross Interchange   1
Forecast   96183   Indirect Cross Interchange   1
MasterPro   296183   Indirect Cross Interchange   1
ORIGINAL ENGINE MANAGEMENT   96183   Indirect Cross Interchange   1

[omega2018]

the delphi sensor arrived today , certainly looks nice - colour delphi box with hologram seal, dephi printed on the cable and on the sensor, nice little rubber boot to stop rain getting in between the cable and the heat shielding.

just finished installing it it was a pig to get the old one out,  might be easy if the car is on a lift and you can stand up under it but lying on your back it was difficult to get at it even with some molegrips.  in the end a spanner, open end under the cable joint as a lever and a screwdriver blade as a wedge shifted it.  it was also quite difficult to get the new one fully in whilst avoiding the temptation to hit it with a hammer. 

i humbly withdraw my suggestion that it will be easy to replace now the connector is accessible.

old one was bosch i assume this is oe.

[Lazydocker]

Last one I changed at the side of the road... Raised the car a little on the suspension with the scissor jack for enough room to get my arm up and did the deed About 10 mins start to finish IIRC. 

That reminds me... I must cut the old sensor and plug off

[omega2018]

wot no wiper removal?

with hindsight i would have wire brushed and chemically removed the rust ring round the outside of the sensor hole,  i think that was what was making it difficult to remove/install