Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: terry paget on 13 February 2016, 19:31:18
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2000 PFL 2.5 petrol manual Omega CDX estate
Normally this car starts and runs cleanly within one second of the first squirt of the starter, hot or cold. But this morning it only fired up on the third 3 second squirt. It did the same thing last Saturday.
Every Friday night I drive 75 miles home from Steventon, Oxfordshire, including 47 miles of M4. Might this be the explanation?
By the way, this is not the same car as my MFL estate, which always needs a 2 second squirt to start.
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I carry a spare crank sensor in the boot.
Just saying........
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2000 PFL 2.5 petrol manual Omega CDX estate
Normally this car starts and runs cleanly within one second of the first squirt of the starter, hot or cold. But this morning it only fired up on the third 3 second squirt. It did the same thing last saturday.
Every Friday night I drive 75 miles home from Steventon, Oxfordshire, including 47 miles of M4. Might this be the explanation?
By the way, this is not the same car as my MFL estate, which always needs a 2 second squirt to start.
Don't use it on saturdays :D
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I carry a spare crank sensor in the boot.
Just saying........
Yes, crank sensor occured to me too. I've had crank sensors fail before, but they have failed when engine was hot, and recovered after 15 minutes allowing me to proceed. After several cycles they fail completely.
Remind me, what is the procedure to change one at the roadside. Is it jack car up, support car with spare wheel under n/s front wheel, crawl under car, remove torx screw, prise out sensor, pop in good sensor, replace screw, feed cable up to top of engine, plug in connector, and secure cable clear of exhaust? Then proceed home and check cable routing in safety. Difficult bit is crawling under car. Torch could be useful too.
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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.
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Being a skinny rat,I've done it without lifting car at all.Just meant a little bit of extra stretch was needed to reach bolt,but nothing too strenuous!
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Being a skinny rat,I've done it without lifting car at all.Just meant a little bit of extra stretch was needed to reach bolt,but nothing too strenuous!
terry paget doesn't carry my "winter spread" ;D. Lucky sod.
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Being a skinny rat,I've done it without lifting car at all.Just meant a little bit of extra stretch was needed to reach bolt,but nothing too strenuous!
terry paget doesn't carry my "winter spread" ;D. Lucky sod.
It'll be time to dust off the "summer spread" soon. :y
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Being a skinny rat,I've done it without lifting car at all.Just meant a little bit of extra stretch was needed to reach bolt,but nothing too strenuous!
Congratulations to you. Did you come in from the side or the front? I tried from the side by failed. I also failed to raise the car high enough with the car jack to get the spare under the front wheel.
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Being a skinny rat,I've done it without lifting car at all.Just meant a little bit of extra stretch was needed to reach bolt,but nothing too strenuous!
terry paget doesn't carry my "winter spread" ;D. Lucky sod.
It'll be time to dust off the "summer spread" soon. :y
I'm sure I can fit in some Spring growth before then...
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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 :D ;D ;D
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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 :D ;D ;D
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.
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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 :D ;D ;D
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 carry a spare but I can't imagine changing it at the side of the road :-\
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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 :D ;D ;D
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 carry a spare but I can't imagine changing it at the side of the road :-\
I suppose when the AA man arrives with his big jack you could then pop in your spare sensor and drive home, rather than be recovered by the AA. Fair enough. Is that general forum policy?
Of course I could always carry a bigger jack and an axle stand, and then be able to change my own crank sensor. Does anyone do that?
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Of course I could always carry a bigger jack and an axle stand, and then be able to change my own crank sensor. Does anyone do that?
Can of worms there Terry - Most of these buggers only bought an Estate so they can carry their entire workshop with them! ;D
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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! ::)
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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.
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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 :D ;D ;D
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.
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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 ;D
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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 :D ;D ;D
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.
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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 ;D
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.
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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. ;)
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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?
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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?
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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... :o