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[Viral_Jim]

A svelt figure like you terry paget can possibly do with minimal jacking.

Undo and pull out old one. Leave dangling until home. Route new one up towards ABS (to keep away from manifold), then back over to cable tray. On a 2.5/3.0, might be worth pulling the crank sensor loom out of the hole in cable tray for ICV, to give more slack, as you don't want it tight due to engine movements.

Are these in a different place on the 2.2 Petrol to the V6? I did mine over Christmas but CAN't IMAGINE being able to do it at the roadside. Mine was basically in between 2 arms of a mounting bracket (Power steering pump??), hell's own job to find and even harder to remove - was I doing something wrong? 

I sould probably add I also don't have the physique to get under any car that isn't jacked - Defender maybe? Even then probably not! 

[terry paget]

A svelt figure like you terry paget can possibly do with minimal jacking.

Undo and pull out old one. Leave dangling until home. Route new one up towards ABS (to keep away from manifold), then back over to cable tray. On a 2.5/3.0, might be worth pulling the crank sensor loom out of the hole in cable tray for ICV, to give more slack, as you don't want it tight due to engine movements.

Are these in a different place on the 2.2 Petrol to the V6? I did mine over Christmas but CAN't IMAGINE being able to do it at the roadside. Mine was basically in between 2 arms of a mounting bracket (Power steering pump??), hell's own job to find and even harder to remove - was I doing something wrong? 

I sould probably add I also don't have the physique to get under any car that isn't jacked - Defender maybe? Even then probably not! 
[/quoteYes, the 2.2 crank sensor is a sod to change in the workshop, impossible at the roadside. I always find I have to remove the n/s engine mounting to get the screw back in. The V6 sensor change is much easier, but still an under car job.

[TheBoy]

I reached bolt from side of car,seemed easier than going from under the front.Dress me all in blue turn me sideways and I look like a biro refill

Again, my congratulations. But, as The Boy has observed, I am not over chubby, yet I could not get under the side of my Omega. I had the impression that many of the forum V6 owning members carried spare crank sensors and changed them at the roadside. I still wonder how.

I've done one in a carpark using the GM supplied jack. And I suffer an over-active pie arm.

[BazaJT]

When my [assumed original because wire was routed in the factory way]cs went the AA towed me home as it went just as I was leaving a busy roundabout,so replacement was done at roadside outside bungalow.The replacement went about 600 miles later[a genuine one]but happened as I was pulling onto our street so again was replaced at roadside[this one was an e-bay special]I've not long since changed that for another genuine item[e-bay special now an emergency spare]again done at roadside outside bungalow.Wish I had off road parking

[terry paget]

I reached bolt from side of car,seemed easier than going from under the front.Dress me all in blue turn me sideways and I look like a biro refill

Again, my congratulations. But, as The Boy has observed, I am not over chubby, yet I could not get under the side of my Omega. I had the impression that many of the forum V6 owning members carried spare crank sensors and changed them at the roadside. I still wonder how.

I've done one in a carpark using the GM supplied jack. And I suffer an over-active pie arm.

You surely did not crawl under your car supported only by the GM jack, did you?
I am wondering if I could run the nearside wheels on to the kerb, using the starter, then crawl under the front of the car. Must try it some time.

[terry paget]

When my [assumed original because wire was routed in the factory way]cs went the AA towed me home as it went just as I was leaving a busy roundabout,so replacement was done at roadside outside bungalow.The replacement went about 600 miles later[a genuine one]but happened as I was pulling onto our street so again was replaced at roadside[this one was an e-bay special]I've not long since changed that for another genuine item[e-bay special now an emergency spare]again done at roadside outside bungalow.Wish I had off road parking

I have had one fail on a 3.2, and several fail on 2.5s. Like you I bought a cheap one on e-bay for a 2.5 and it ran perfectly, but I feared it might fail so I replaced it with a main dealer genuine GM Siemens sensor, which failed within 500 miles. Engine stopped running 8 miles from home, so I rang the wife to bring the 3.2 and towbar to tow me home. By the time she arrived the sensor had cooled down and the engine started and ran all right, so I drove it home and replaced the cheapo sensor, which ran OK until I scrapped he car. I kept the sensor.

I change V6 sensors with the car over the pit. I still wonder you can do it with the car on its wheels, crawling under the cill.

[Viral_Jim]

Yes, the 2.2 crank sensor is a sod to change in the workshop, impossible at the roadside. I always find I have to remove the n/s engine mounting to get the screw back in. The V6 sensor change is much easier, but still an under car job.

That's a relief. Thought I was making a meal of it as per usual.

[omega2018]

The replacement went about 600 miles later[a genuine one]

I replaced it with a main dealer genuine GM Siemens sensor, which failed within 500 miles.

wots going on?  my delphi sensor (£27.61 delivered) is still working fine after 2,200 miles. not a single missed start. are they failing on the wiring?

[terry paget]

Car started perfectly this morning, so previous Saturday mornings must have been coincidences.I shall continue to pursue means of changing V6 crank sensors at the roadside.
Has anyone any idea why cam sensors give such trouble on 4 cylinder Omegas, but none on V6s?

[sjc]

Has anyone any idea why cam sensors give such trouble on 4 cylinder Omegas, but none on V6s?

That has always puzzled me too.  In the Omega I carry a spare crank sensor and in Mrs SJC's Astra there's a spare cam sensor    Different engines, different weakspots I guess.  In the M5 I carry a bible - to pray nothing goes wrong, which it hasn't so far, but if it ever does...