Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: omega2018 on 26 October 2015, 18:24:25
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i've just replaced the crank sensor using the helpful guide. i did remove the wipers and scuttle cover and a few other hoses. i wasn't sure from the guide where to fix the new joint in the end i have cable tied it directly to the cable tray, as far forward as i could. this means if it ever goes again i can plug in a new one very easily without removing anything. yet to bolt the sensor itself in but i think that will be straightforward
for info here were my symptoms:
occasionally maybe one in ten or twenty starts it wouldn't start on the first turn. had about 4 or 5 of these before one day, an hour or more after stopping it wouldn't start at all, many attempts. left it, tried again, same result. checked all likely fuses, disconnected battery and re-connected tried again same. called breakdown, an hour later of course when they arrived it started first time and no problems all the way home (though i didn';t dare switch it off) . today it also started first time but too late i am binning it. car has done 90K.
is there any explanation as to why it goes like that? you'd think it would just go.
new pattern ones are about £17. cheapest bosch or lucas one i could find was £64! i assume vaux the same.
i know official oof advice is to by vaux but i can't justify £64 especially because to replace the sensor in future it will be much easier - basically plug in, jack up and secure car, undo and do up one torx bolt. will buy another pattern one as spare instead. £64 is nearly 4 pattern ones.
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I think your gonna regret buying cheapo sensor :y
When it packs up next time you may not be so lucky.. Think TB had a genuine go on him in france..And car was Dead.
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If you are content with changing your pattern crank sensor annually (If you're lucky) then go for it. :y I'd definitely keep a spare in the boot though if you're using pattern sensors. ;)
The trouble is that you know it will fail and the law of sod will decree that it fails on your wedding anniversary night when you are in your best bib and tucker taking SWMBO out for a posh night out! :D ;D ........ and it's pissing down!! :o ::) :'( ;D
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what is it that fails on these? is it the sensor head or the cable?
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I think the record for pattern crank sensor failing is measured in days :-X ::)
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I think the record for pattern crank sensor failing is measured in days :-X ::)
;D ;D ;D
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i'm struggling to think what there is to fail in these - no moving parts, very basic electronics. anyway i have found a delphi one for £28 is that acceptable to oof? presumably bosch is ok.
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i have found a delphi one for £34 is that acceptable to oof? .....
You can buy what you like ...... experience of forum members though suggest that pattern don't last, and Tigger says above, it'll always be when you most want your car to work ;)
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So Walk into the Main dealer and buy over the counter :y That is the advice on here..I bought two in one visit...The spare is in my boot :y
(https://dl.dropboxusercontent.com/u/70807181/crank%20sensor.JPG)
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So Walk into the Main dealer and buy over the counter... I bought two in one visit...The spare is in my boot :y
i'm guessing that's approx 1/3 of the market value of my car...
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I dont know what you lot do to crank sensors , ive had six omegas and never had to replace any ::) Although re-routing is the best thing for them . I suspect that the pattern sensors dont like the extreme heat of the original routing but some pattern dont seem to have the protective heat foil around them that wont help either ::) If i did have one fail i would fit genuine even though it is a tad of an expense in a one'a :)
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yes, this is the first one to go in 270,000 miles of 2 omegas. mind you, very similar with my alternator reg, which went at 80,000 on this 2.6 omega and never on the 2.5. i think the 2.5s were more reliable (apart from the egr).
ordered a delphi but will keep it as the new spare and run with the £17 one and report back. my £17 one has the foil protection. i will route it carefully and install with correct torque.
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yes, this is the first one to go in 270,000 miles of 2 omegas. mind you, very similar with my alternator reg, which went at 80,000 on this 2.6 omega and never on the 2.5. i think the 2.5s were more reliable (apart from the egr).
ordered a delphi but will keep it as the new spare and run with the £17 one and report back. my £17 one has the foil protection. i will route it carefully and install with correct TALK
"don't you dare break down" a stiff talking too ;D
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I've had them fail on a 3.0, a 3.2, and several on 2.5s. Also had failures on a 2.0 and twice on 2.2s, much harder to change on the 4 cylinder engines. On a 2.5 estate I tried one off e-bay for £25, worked a treat, but forum pressure persuaded me buy a genuine Vx Siemens sensor so I did and fitted it, only to have it fail within 1000 miles. I replaced the £25 sensor and took the Vx sensor back for replacement. The £25 sensor never failed, when I scrapped the car I kept it.
I wonder how they fail. It seems to be in the sensor, not the cable. Sensor is only a coil, potted with epoxy in a plastic holder, what's to go wrong?
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Bad batch of genuine sensors maybe :-\
What's the warranty on a genuine sensor ?
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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. :)
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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. :-\
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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.
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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.
:y
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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. :)
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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. (https://dl.dropboxusercontent.com/u/26795734/Smilies/rofl.gif)
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Fair do's :)
Now I'm thinking 'my car's on her 2nd cs, after 180,800 miles'... oooh, eck! ticking time bomb! ;)
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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.
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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. :)
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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 :y
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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/ (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. :y
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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 :y
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
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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.
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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 :y About 10 mins start to finish IIRC. :y
That reminds me... I must cut the old sensor and plug off :-X ::)
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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
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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
Nope... If you know where the plug is and are able to squeeze your hands in (and suffer the pain) it can be done ;)