Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Davie on 28 March 2010, 17:43:05

Title: car still not starting
Post by: Davie on 28 March 2010, 17:43:05
hi guys back again after some abscence still have problem with my motor. NEW crankshaft sensor from vauxhall PART NO. [90458251] will not start car .Today i took sensor from my old sri 8valve and it started although runs very badly so can someone tell me why vauvhall replacement isnt even allowing my car to spark please help guys.
Title: Re: car still not starting
Post by: tunnie on 28 March 2010, 17:44:33
i broke my mind reading gadget other day, what engine do you have? Assume its 2.0 for a 8v Cav sensor to remotely work
Title: Re: car still not starting
Post by: Davie on 28 March 2010, 17:47:53
Yes its 2ltr 16valve ecotech
Title: Re: car still not starting
Post by: tunnie on 28 March 2010, 17:54:36
crank sensor is very rare failure on 4pot, have you had codes read?
Title: Re: car still not starting
Post by: Andy B on 28 March 2010, 18:09:58
Quote
hi guys back again after some abscence still have problem with my motor. NEW crankshaft sensor from vauxhall PART NO. [90458251] will not start car .Today i took sensor from my old sri 8valve and it started although runs very badly so can someone tell me why vauvhall replacement isnt even allowing my car to spark please help guys.

these are the crank sensors fitted to various flavours of Omegas.

Omega Part Number Retail Price Normal Trade Trade Club
Crankshaft sensors
2.0 8v                                   90493864 £59.50 £53.56 £46.32

 
2.0 16v to 14194716                                90458251 £59.50 £53.56 £46.32

 
2.0 16v from 14194717/31000001                              9174621 £35.90 £32.36 £27.93

 
2.5 (early models)                                 90492006 £82.00 £73.80 £63.94

 
2.5 (later models)                                 90492061 £59.50 £53.56 £46.32

 
2.6/3.0/3.2                                  90540743 £53.50 £48.20 £41.47

 
2.0DTi/2.2DTi                                  90540188 £37.00 £33.30 £28.81

 
U25TD/X25TD                                  90487810 £85.50 £76.95 £66.79

Maybe your's should be 9174621  :-/  :-/  :-/

Title: Re: car still not starting
Post by: Davie on 28 March 2010, 18:17:23
yes my mate came over with his machine and it said crank sensor faulty hence new purchase from vauxhall. guy at counter says that 90458251 is only one he does for my car but it dont work.
Title: Re: car still not starting
Post by: tunnie on 28 March 2010, 18:26:57
can you list all the codes that were read? Things like failing cam sensor, which is much more likey on 4pot, can cause other random codes
Title: Re: car still not starting
Post by: Davie on 28 March 2010, 18:48:44
no sorry dont remember codes but it did list AFM which i replaced with brand new one and have also replaced new coil pack.
Title: Re: car still not starting
Post by: TheBoy on 28 March 2010, 20:37:18
Post up results of paperclip test
Title: Re: car still not starting
Post by: Davie on 29 March 2010, 17:46:42
just been to my local vx dealer explained the situation . cant believe they cant help ,nothin else they can do for me .so where do i go from here HELP PLEASE.
Title: Re: car still not starting
Post by: tunnie on 29 March 2010, 18:00:03
worth updating your profile with your location, some of our members might be near you with tech2
Title: Re: car still not starting
Post by: Marks DTM Calib on 29 March 2010, 18:07:18
Quote
crank sensor is very rare failure on 4pot, have you had codes read?

Your kidding right...more common than V6 failures!
Title: Re: car still not starting
Post by: tunnie on 29 March 2010, 18:09:50
Quote
Quote
crank sensor is very rare failure on 4pot, have you had codes read?

Your kidding right...more common than V6 failures!

I've seen hardly any fail! Its always cam! Both our 2.2's never had crank sensors go but cam...
Title: Re: car still not starting
Post by: TheBoy on 29 March 2010, 18:34:18
Quote
Post up results of paperclip test
::)
Title: Re: car still not starting
Post by: TheBoy on 29 March 2010, 18:35:03
Quote
Quote
Quote
crank sensor is very rare failure on 4pot, have you had codes read?

Your kidding right...more common than V6 failures!

I've seen hardly any fail! Its always cam! Both our 2.2's never had crank sensors go but cam...
You will curse when your crank sensor fails, and ask why didn't GM make it as easy as a V6 one ;)
Title: Re: car still not starting
Post by: Davie on 29 March 2010, 18:53:48
CHANGING THE CRANK SENSOR ON MINE TAKES LITERALLY 5 MINS. how do i do paper clip test and would i do it with new sensor in or my 8valve one ????
Title: Re: car still not starting
Post by: tunnie on 29 March 2010, 18:56:14
Quote
Quote
Quote
Quote
crank sensor is very rare failure on 4pot, have you had codes read?

Your kidding right...more common than V6 failures!

I've seen hardly any fail! Its always cam! Both our 2.2's never had crank sensors go but cam...
You will curse when your crank sensor fails, and ask why didn't GM make it as easy as a V6 one ;)

I still stand by their reliability, its always cam sensor 4 pot, crank on 6 pot
Title: Re: car still not starting
Post by: TheBoy on 29 March 2010, 18:58:18
Quote
CHANGING THE CRANK SENSOR ON MINE TAKES LITERALLY 5 MINS. how do i do paper clip test and would i do it with new sensor in or my 8valve one ????
See maintence guides section, its in there :y
Title: Re: car still not starting
Post by: Andy H on 29 March 2010, 18:58:37
Quote
Quote
Post up results of paperclip test
::)
On most Omegas you don't need expensive equipment to read the fault codes, you just need a paper clip.

Read all about it here The Paperclip Test (http://www.omegaowners.com/forum/YaBB.pl?num=1189022687) and then tell us what the codes are :y
Title: Re: car still not starting
Post by: Davie on 04 April 2010, 18:15:08
ok guys happy easter to all . so i didnt do paper clip test instead had my mate stick his diagnostic machine on car all it says is wrong rpm signal this was verified with my brohters mate who has just bought a new snap on machine and it came up wiht the exacy same message. also bouhgt new camshaft sensor to no avail think next step is the scrappies.
Title: Re: car still not starting
Post by: jonnycool on 04 April 2010, 23:02:24
Mate, do the paperclip test and post the results on here - it's easy to do and some of the experts on here may be able to spot something that your mate hasn't. Give it a go, surely better than scrapping it??
It may be something simple.. :y
Title: Re: car still not starting
Post by: Entwood on 04 April 2010, 23:11:44
Don't go by half guessed descriptions .. do the test and give us the CODE NUMBERS  .. you will then get the correct advice .. :)
Title: Re: car still not starting
Post by: Marks DTM Calib on 04 April 2010, 23:13:41
Quote
Quote
Quote
Quote
Quote
crank sensor is very rare failure on 4pot, have you had codes read?

Your kidding right...more common than V6 failures!

I've seen hardly any fail! Its always cam! Both our 2.2's never had crank sensors go but cam...
You will curse when your crank sensor fails, and ask why didn't GM make it as easy as a V6 one ;)

I still stand by their reliability, its always cam sensor 4 pot, crank on 6 pot

Beleave me , the 4 pot ones are worse....and on the 2.0 also cause cam sensor incorrect signal errors with no crank sensor fault code!

Chuffing nightmare!
Title: Re: car still not starting
Post by: MutantCav on 05 April 2010, 07:41:01
As the list states 2 possible crank sensors for the 2.0 16v perhaps the car falls into the later category and the crank sensor is the wrong one??
Title: Re: car still not starting
Post by: Davie on 05 April 2010, 13:43:01
have already checked out other crank sensor it has different fittment plug will try and do paper clip test today
Title: Re: car still not starting
Post by: Davie on 05 April 2010, 14:46:28
ok lads just done paper clip test .......... results are code 19 whits wrong with it boys
Title: Re: car still not starting
Post by: Entwood on 05 April 2010, 14:51:50
If it was a V6 I would know .. crank sensor .. but as its a 4 pot ... I'll leave it to an expert .. :)
Title: Re: car still not starting
Post by: PhilRich on 05 April 2010, 16:43:16
I'm not an expert, but code 19 on a 4 pot is: Incorrect RPM signal (crankshaft sensor), check sensor. HTH  :y