Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: agstony on 15 July 2008, 18:31:55

Title: omega intermittent starting problem
Post by: agstony on 15 July 2008, 18:31:55: omega 2.5 v6 auto year 2000 milage 60k. No one can seem to find the intermittent starting problem with my omega and its getting really bad now to the point i might have to sell.

You can go out and then it just decides its not going to start, leave it 10 min then starts straight away . Decided not to start on friday night tried it several times oner weekend started first time monday morning.

Took it to haines they cant fing anythink. When it wont start there is no spark.

HELP HELP HELP
Title: Re: omega intermittent starting problem
Post by: VXL V6 on 15 July 2008, 18:39:24: Crank sensor at a guess.

Have you read the codes?
Title: Re: omega intermittent starting problem
Post by: agstony on 15 July 2008, 18:41:18: Haines said no codes but reading this forum does suggest c/sensor
Title: Re: omega intermittent starting problem
Post by: JasonH on 15 July 2008, 21:10:14: Sounds very much like the crank sensor.

Very common failure.

Car turns over just fine but doesn't fire at all. Then sometime later just starts as if nothing happened at all....
Title: Re: omega intermittent starting problem
Post by: Entwood on 15 July 2008, 21:19:11: Have you tried paperclipping it and checking for codes yourself ?? Especially when it won't start ??

http://www.omegaowners.com/forum/YaBB.pl?num=1189022687

:y :y :y :y
Title: Re: omega intermittent starting problem
Post by: tunnie on 15 July 2008, 21:23:00: sounds exactly like crank sensor.

Easy, EASY fix!
Title: Re: omega intermittent starting problem
Post by: johnnycboy on 15 July 2008, 21:32:25: crack sensor. as above
Title: Re: omega intermittent starting problem
Post by: jimmas on 15 July 2008, 21:34:20: Agreed crank sensor
Title: Re: omega intermittent starting problem
Post by: feeutfo on 15 July 2008, 22:31:38: yep. Had one go on previous car, was told it will take about a week to stop working altogether, changed it before it got that far so can not verify that. :y
Title: Re: omega intermittent starting problem
Post by: fredthedog on 16 July 2008, 10:03:42: Hi all, I now have a similar problem (99 2.5v6), intermittent starting. No fault codes beyond the usual, no flashing from Eng Mgmnt light. Car just turns but no firing. :-[

I have had this before, when I removed the crank sensor and cleaned (it being covered in oil), but never been able to prove where the fault lies!!! >:(

Any advice greatfully received (note: I have: replaced cam cover seals, recently replaced coil pack and HT leads, plugs etc), also changed crank sensor about 3yrs ago.

Thoughts?? Crank sensor again? Imobiliser? Fuel pump relay???

Cheers
:y
N
Title: Re: omega intermittent starting problem
Post by: rickyboy on 16 July 2008, 10:15:50: Crank sensor - usually but not always brings up a code.
Title: Re: omega intermittent starting problem
Post by: Entwood on 16 July 2008, 12:20:30: Paperclip it .. see post #4 ... if it has a code 19 .. crank sensor is on its way out :)

This can be a "stored" code .. not an active one .. only active codes give an EML light
Title: Re: omega intermittent starting problem
Post by: pete1666 on 16 July 2008, 17:00:05: Sounds like a crank sensor breaking down.
Title: Re: omega intermittent starting problem
Post by: markey mark on 16 July 2008, 18:27:50: both crank sensors deffo !! :y
Title: Re: omega intermittent starting problem
Post by: JasonH on 16 July 2008, 21:10:55: Note that you only tend to get the 19 fault codes on pre-facelift cars. My year 2000 car definitely had a bad crank sensor - problem completely disappeared when it was changed - but never showed any fault codes.
Title: Re: omega intermittent starting problem
Post by: JasonH on 16 July 2008, 21:13:00: Oh and a crank sensor is about £50 and takes about 30 mins to fit if you know how. If not you'll spend a while finding the right connector.....