Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: star_whites on 06 January 2008, 21:56:41
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Hey Guys
Just a quick question.
Would the timing being out slightly cause the fault code for the Cam Sensor to come on and stay on. Also it appears that when you rev up it cuts out at 4500 with a pop and drops down again???
Any ideas
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Has this problem only just started? If it has, and it was OK before, it's unlikely to be timing related.
4.5k rev limit on a 4 pot is always cam or crank sensor
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cam sensors frequently fail on 4 cylinder omegas. if you have already recently changed it with a genuine one, check cam timing, as it can throw cam sensor error.
4.5k rpm is the limp mode for cam sensor fault...
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Its sorta a long storey to be honest. Heres the short version though!
Head Gasket went, had repaired by dodgy mechanic who f****d it up. Found out had major electrical faults. Auto electrician removed and traced faults one being rewire to cam sensor. Car still sluggish compared to before, few months later oil leak down front of engine. Traced oil leak to leak on rocker cover right where cam sensor is fitted.
So much oil had to jet wash timing belt, tensioners, covers and cam sensor to clean all oil out. Started up and had eml on since. Car starts and runs fine except for cuts out at 4500 revs and appears to be slower than before??
Ive always suspected timing being slightly out but not had chance to get it checked due to work commitments!
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Its sorta a long storey to be honest. Heres the short version though!
Head Gasket went, had repaired by dodgy mechanic who f****d it up. Found out had major electrical faults. Auto electrician removed and traced faults one being rewire to cam sensor. Car still sluggish compared to before, few months later oil leak down front of engine. Traced oil leak to leak on rocker cover right where cam sensor is fitted.
So much oil had to jet wash timing belt, tensioners, covers and cam sensor to clean all oil out. Started up and had eml on since. Car starts and runs fine except for cuts out at 4500 revs and appears to be slower than before??
Ive always suspected timing being slightly out but not had chance to get it checked due to work commitments!
Firstly, don't take chances with the cambelt kit. If the rollers have been jetwashed - change them, and the belt, and waterpump if it's done more than 40k miles. The timing is easy to check by eye on the 4 pot.
If you're getting a cam sensor fault code, first check the wiring from the cam sensor wires back to the ECU, and then suspect the sensor...
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Well I have a spare sensor anyway, so am planning on changing this as soon as I get over this novo virus. Feel like c**p.
Ive checked the haynes manual but as usual it is not very clear on where the timing should be on the top two cogs, plus I havent got the lock off tool. I feel confident enough to change it myself as I have the tools and I have done a number of fords before But I dont like doing it without the proper info.
If once Ive changed the cam sensor it still comes up I planned on taking it back to the trician who sorted it before as he did a good job, just wanted to save myself a 40 per hour bill thats all.
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Cam sensors (the original unmodified version) and VERY fragile and fail regularly. Vaux now have a modified sensor available. I have one fitted in my 2.0 16v Cavalier and, touch wood, seems fine after 2 years.
The symptoms you describe point the cam sensor failure.
And yes, get the timing belt etc changed!
Hope this helps
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Ok thanks guys, will change the cam sensor tom if its dry as going to take a couple of days off work, docs orders honest ;D
Will let you know if it sorts the eml fault.
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Juts as a further note, the ECU will report a cam sensor signal fault if the timing is out.
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Thanks Mark, I thought it would but wanted someone to confirm. Think Im going to have to purchase the cam locking tool as Ive rang three garages and no one wants to touch the timing. They sey it cant be reset!!!!.......Now Im no mechanic but even I know that it can be altered once the belts off, think they just dont want the work.
If I get the the cogs lined up as they are and take a couple of photos is there any chance someone could tell me if its out or not. Will mark the timing marks with paint marker prior to taking photos??
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Thanks Mark, I thought it would but wanted someone to confirm. Think Im going to have to purchase the cam locking tool as Ive rang three garages and no one wants to touch the timing. They sey it cant be reset!!!!.......Now Im no mechanic but even I know that it can be altered once the belts off, think they just dont want the work.
If I get the the cogs lined up as they are and take a couple of photos is there any chance someone could tell me if its out or not. Will mark the timing marks with paint marker prior to taking photos??
Lol, no need to mark anything on the 4 pots as the timing marks are VERY obvious.
Its true that there is not the finite adjustment on the 4 pot belts that there is on the V6 units but, they can still be a tooth out.
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Thanks Mark, I thought it would but wanted someone to confirm. Think Im going to have to purchase the cam locking tool as Ive rang three garages and no one wants to touch the timing. They sey it cant be reset!!!!.......Now Im no mechanic but even I know that it can be altered once the belts off, think they just dont want the work.
If I get the the cogs lined up as they are and take a couple of photos is there any chance someone could tell me if its out or not. Will mark the timing marks with paint marker prior to taking photos??
IIRC, on 4 pot, there are 2 marks on cam pulleys that point to each other horizontally when set right.
Lock kit for 4 pot is about £5 for a plastic draper one.
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I think mine are set at about 2 oclock (right cog) & 10 oclock (left cog) I will take a photo.
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I think mine are set at about 2 oclock (right cog) & 10 oclock (left cog) I will take a photo.
Sure they are supposed to line up, but worth checking what others say (as I normally refuse to work on starter motors :P)
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No, both should be at 12.00 on the X20XE(V)
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No, both should be at 12.00 on the X20XE(V)
Arent there other marks that point to each other? Or am I thinking something else (probably the Rover)
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The small block ones are like that.....
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Well on looking at it now, on the right cog there is one notch and a line at the same point indictating that this is the timing set up mark. On the left hand cog there are two different notches on the cog and one has a line stamped onto the wheel itself (states exhaust).
Im kind of confused now as to wheter the timing should be at 12 oclock or pointing at each other. I have noticed however that there are two indentations on the timing back plate at the top of the engine, as if it is supposed to line up with these?????
Do you think that this is the case. Oh and I have just spoke with my car spares who have ordered me a cam locking tool to arrive friday (fiver like you said).
I have also found on remving the leads that the pots are full of oil and the leads are saturated in it. Going to give them a good clean down as well and drain as much oil out as possible before fitting the new gasket.
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You need to clean the breathers out and fit a new cam cover gasket then.
Both cam sprockets will have two marks, one with E and one with I.....this stands for Exhaust and Inlet.....so, the left hand sprocket you need to be looking at the I and the right hand one the E
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Thanks Mark, let you know how I get on, Im on my way to get wet and cold as its bloody raining again lol
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Well Ive removed cam cover, cleaned breathers and drained all the oil from the pots using an old syringe & needle had in the medical cabinet. Dried out the plugs and leads (sprayed with wd40). Cleaned all mating surfaces, fitted new gasket and refitted.
Removed cam sensor & found full of oil/water, so replaced with spare, cleaned out multi plug and sprayed with wd40, refitted.
Checked timing as per Marks instructions and set up to tdc and took the some photos, however Im not sure on how to attach these. I took a couple of the timing marks on the cogs and on the bottom wheel. If anyone can tell me how to attache the photos I will.
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Well Ive removed cam cover, cleaned breathers and drained all the oil from the pots using an old syringe & needle had in the medical cabinet. Dried out the plugs and leads (sprayed with wd40). Cleaned all mating surfaces, fitted new gasket and refitted.
Removed cam sensor & found full of oil/water, so replaced with spare, cleaned out multi plug and sprayed with wd40, refitted.
Checked timing as per Marks instructions and set up to tdc and took some photos, however Im not sure on how to attach these. I took a couple of the timing marks on the cogs and on the bottom wheel. If anyone can tell me how to attache the photos I will.
Have a look at this link. http://www.omegaowners.com/forum/YaBB.pl?num=1152786884
You will need to upload them to Photobucket.com or some such hosting site. At it says in the link. Click 'Quote' on a post with some pictures and you will see what has been done. :y
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Ok lets see if I get it right first time then:
<a href="http://s260.photobucket.com/albums/ii3/star_whites/?action=view¤t=DSCF1134.jpg" target="_blank"><img src="http://i260.photobucket.com/albums/ii3/star_whites/DSCF1134.jpg" border="0" alt="Photobucket"></a>
(http://)<a href="http://s260.photobucket.com/albums/ii3/star_whites/?action=view¤t=DSCF1135.jpg" target="_blank"><img src="http://i260.photobucket.com/albums/ii3/star_whites/DSCF1135.jpg" border="0" alt="Photobucket"></a>
(http://)<a href="http://s260.photobucket.com/albums/ii3/star_whites/?action=view¤t=DSCF1138.jpg" target="_blank"><img src="http://i260.photobucket.com/albums/ii3/star_whites/DSCF1138.jpg" border="0" alt="Photobucket"></a>
(http://)<a href="http://s260.photobucket.com/albums/ii3/star_whites/?action=view¤t=DSCF1141.jpg" target="_blank"><img src="http://i260.photobucket.com/albums/ii3/star_whites/DSCF1141.jpg" border="0" alt="Photobucket"></a>
(http://)<a href="http://s260.photobucket.com/albums/ii3/star_whites/?action=view¤t=DSCF1142.jpg" target="_blank"><img src="http://i260.photobucket.com/albums/ii3/star_whites/DSCF1142.jpg" border="0" alt="Photobucket"></a>
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Ummm now that didnt work, I just copied code. Lets try again.
(http://i260.photobucket.com/albums/ii3/star_whites/DSCF1142.jpg)
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Um think that worked, can someone confirm for me, will check again later, got to rush out ::)
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and the other cam?
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Looking through your photobucket account, the cam timing looks fine.
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The other one is like:
(http://i260.photobucket.com/albums/ii3/star_whites/DSCF1141.jpg)
and the bottom like:
(http://i260.photobucket.com/albums/ii3/star_whites/DSCF1138.jpg)
however the photo of the bottom doesnt really give an accurate account. When you look at it from other angles it appears that it is out by about 5mm and not level with the indicator. Would this make a big difference??