Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: JueV6 on 12 July 2008, 14:59:20

Title: At a loss now PLEASE HELP
Post by: JueV6 on 12 July 2008, 14:59:20
After rebuilding Fred117's engine, the EML light has come on, It wasn't on before the rebuild. Just a load rattle.

Had a Snap-solus plugged in yesterday and it said the cam sensor was dead. we have got another 1 and tried that and the car drives worse. It actually dies. I have autodata CD2 and have gone through the fault and componant testing and the wiring is fine, the sensor is reading within the correct tolerences. :'( :'( :'(

If anyone has any ideas please pm me and i'll give you my number  I'll call you I have 3000 x-network Free minutes to use. :y :y
Title: Re: At a loss now PLEASE HELP
Post by: fred117 on 12 July 2008, 17:09:10
Please help us :'( :'( :'(
Title: Re: At a loss now PLEASE HELP
Post by: FRE07962128 on 12 July 2008, 17:17:51
Quote
After rebuilding Fred117's engine, the EML light has come on, It wasn't on before the rebuild. Just a load rattle.

Had a Snap-solus plugged in yesterday and it said the cam sensor was dead. we have got another 1 and tried that and the car drives worse. It actually dies. I have autodata CD2 and have gone through the fault and componant testing and the wiring is fine, the sensor is reading within the correct tolerences. :'( :'( :'(

If anyone has any ideas please pm me and i'll give you my number  I'll call you I have 3000 x-network Free minutes to use. :y :y

Sorry I cannot help too much when it comes to miggy sensors (know too little about them!) but are you sure the 2nd cam sensor you tried is a good one?  I know, especially with second hand parts or patterns, that you can often have so called replacements that are worse than the failed unit you have removed!

May be you should just try yet another (new) sensor before going on with your fault finding. ;)  Hope this helps, but I bet others far more skilled on miggy's than me will soon be on to help! :y
Title: Re: At a loss now PLEASE HELP
Post by: JueV6 on 12 July 2008, 20:23:23
Thanks Lizzie, I've checked both sensors and the original 1 comes within the stated resistances but the ELM is still on, The 2nd 1 is within the tolerances but the engine completely dies at 4000 rpm not just a rev limiter missfire. :-/
Title: Re: At a loss now PLEASE HELP
Post by: TheBoy on 12 July 2008, 21:30:35
Is that only faultcode?
Title: Re: At a loss now PLEASE HELP
Post by: JueV6 on 12 July 2008, 23:04:37
yes TB it was / is

Solus gave Cam senor at fault with Egine running, Cleared fault and it came back straight away.
Title: Re: At a loss now PLEASE HELP
Post by: FRE07962128 on 12 July 2008, 23:08:49
Quote
Thanks Lizzie, I've checked both sensors and the original 1 comes within the stated resistances but the ELM is still on, The 2nd 1 is within the tolerances but the engine completely dies at 4000 rpm not just a rev limiter missfire. :-/

Has the wiring to the cam sensor been damaged or has the cam itself gone u/s? :-/ :-/

Title: Re: At a loss now PLEASE HELP
Post by: JueV6 on 12 July 2008, 23:12:34
we checked the wiring from the ECU to the plug .. No breaks or damage as we can see, checked continuity, thats ok, checked the sensor and that reading as it should according to autodata CD2 :-/
Title: Re: At a loss now PLEASE HELP
Post by: FRE07962128 on 13 July 2008, 00:19:00
Quote
we checked the wiring from the ECU to the plug .. No breaks or damage as we can see, checked continuity, thats ok, checked the sensor and that reading as it should according to autodata CD2 :-/

Is the wiring in the plug ok?  No wires split or "pulled"?  Have you done a circuitry check with a meter, or is that what you meant by "continuity" check?
Title: Re: At a loss now PLEASE HELP
Post by: FRE07962128 on 13 July 2008, 00:22:03
Silly question maybe, but as you "rebuilt" the engine have you set the cams correctly, with all timing marks lined up? :-/ :-/
Title: Re: At a loss now PLEASE HELP
Post by: TheBoy on 13 July 2008, 09:54:25
you still getting cam sensor fault?
Title: Re: At a loss now PLEASE HELP
Post by: JueV6 on 13 July 2008, 10:16:51
Timing is spot on the belt tension is correct, and yes
Title: Re: At a loss now PLEASE HELP
Post by: TheBoy on 13 July 2008, 10:28:10
Is it a 4 cylinder or v6?  Can't see it mentioned above, apologies if it has been
Title: Re: At a loss now PLEASE HELP
Post by: JueV6 on 13 July 2008, 10:57:50
sorry jamie it's Fred117's 2.0 4 pot
Title: Re: At a loss now PLEASE HELP
Post by: JueV6 on 13 July 2008, 11:00:04
'98' on an 'R' 2.0 16v


If I can convince him to start off early i'll try to get him down to WIM on the 27th too
Title: Re: At a loss now PLEASE HELP
Post by: ians on 13 July 2008, 11:05:12
With the original cam sensor, apart from the EML, is it running ok?
Title: Re: At a loss now PLEASE HELP
Post by: JueV6 on 13 July 2008, 11:26:16
apart from being in limp mode, 4500 rpm,  yup tick over is fine, ICV has been cleaned, plugs, leads, Engine had a sump up rebuild, new shells (ends and mains) crank polish etc.

After it was all bolted up, turned the key and it started on the key, first time. all good except EML :-/
Title: Re: At a loss now PLEASE HELP
Post by: FRE07962128 on 13 July 2008, 11:35:54
Quote
apart from being in limp mode, 4500 rpm,  yup tick over is fine, ICV has been cleaned, plugs, leads, Engine had a sump up rebuild, new shells (ends and mains) crank polish etc.

After it was all bolted up, turned the key and it started on the key, first time. all good except EML :-/

From all your answers it would seem all mechanical is ok, but it is an electrical / engine management problem.  With this mind have you checked that no control boxes were hit / damaged when you re-installed the engine?  It is all too easy to damage delicate electrical components / wiring when undertaking this operation!  How is the ECU?

(please excuse me if I am teaching my grandmother to suck eggs, or simply repeating the obvious, but I am just trying to eliminate all the possibilities as I have had to do in the past!) ;)


Title: Re: At a loss now PLEASE HELP
Post by: albitz on 13 July 2008, 11:40:06
a trip to mark dtm or the boy for a tech 2 session might save you a lot of time /grief in the long run. :-/
Title: Re: At a loss now PLEASE HELP
Post by: JueV6 on 13 July 2008, 11:40:10
any suggestions are welcome Lizzie, I think I have check everything possible without getting it put on a tech2

and Fred117 was on a very tight bugdet on the rebuild, and thats why it took a while to rebuild. so stealers prices for a diagnostics check is out of the question atm. :) :)
Title: Re: At a loss now PLEASE HELP
Post by: FRE07962128 on 13 July 2008, 12:13:05
Quote
any suggestions are welcome Lizzie, I think I have check everything possible without getting it put on a tech2

and Fred117 was on a very tight bugdet on the rebuild, and thats why it took a while to rebuild. so stealers prices for a diagnostics check is out of the question atm. :) :)

Too true they are something you don't want to pay after saving on the rebuild itself!  I have avoided them like the plague, unless my company was paying for it on my 100k+ per year cars! ;D ;)
Title: Re: At a loss now PLEASE HELP
Post by: TheBoy on 13 July 2008, 21:56:16
was the new sensor new? genuine gm?
Title: Re: At a loss now PLEASE HELP
Post by: rickyboy on 13 July 2008, 22:19:11
The rev limiter at 4500rpm is a dead give away for cam sensor fault.  Get another one it's definitely faulty or not fitted correctly.  When fitting the cam sensor make sure the sensor is spottlessly clean along with it's mating face and that the bolt is torqued up correctly.  
Title: Re: At a loss now PLEASE HELP
Post by: JueV6 on 13 July 2008, 22:30:08
Quote
was the new sensor new? genuine gm?

Yes TB it was / is. :y

Quote
The rev limiter at 4500rpm is a dead give away for cam sensor fault.  Get another one it's definitely faulty or not fitted correctly.  When fitting the cam sensor make sure the sensor is spottlessly clean along with it's mating face and that the bolt is torqued up correctly.  

engine was totally cleaned before the rebuild and rebuilt completely before putting it back in. The only things that needed to be put on as it was put back in was the aircon pump, the exhaust downpipe and starter. and the connect all the wiring and plumbing.
 :-/
Title: Re: At a loss now PLEASE HELP
Post by: TheBoy on 13 July 2008, 22:35:17
either faulty sensor then, or prob with its wiring
Title: Re: At a loss now PLEASE HELP
Post by: pete1666 on 13 July 2008, 22:44:05
Hi have you changed/checked  the fuel filter, what condition are the injectors in? or maybe the fuel pump  might be dying.

Pete