Omega Owners Forum - Intermittent problem starting

AllyM

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Edinburgh
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Drives: Elite 3.2 V6

Intermittent problem starting
29. Apr 2008 at 18:20

the Omega (3.2 v6 ) has for the last few weeks had a starting problem , it would start/drive fine all week but for some strange reason it would not start on a Saturday between 5pm and 6pm for 3 consecutive weeks ( began to think the damn thing was possesed ) . However it threw me a wobbly yesterday evening ( strangly at 5.45pm ) and would,nt start . So took it today to the Vauxhall autospark i know and he checked it out on Tech 2 and found nothing registering anywhere at which point a mechanic was called across who said it was most likely a crank sensor fault . Is this most lkely the explanation or any other ideas ?? , if it is the crank sensor, what price am i looking at for one , and cost of installation Sad

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TheBoy

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Brackley, Northants
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Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10

Re: Intermittent problem starting
Reply #1 - 29. Apr 2008 at 18:22

AllyM wrote on 29. Apr 2008 at 18:20:

the Omega (3.2 v6 ) has for the last few weeks had a starting problem , it would start/drive fine all week but for some strange reason it would not start on a Saturday between 5pm and 6pm for 3 consecutive weeks ( began to think the damn thing was possesed ) . However it threw me a wobbly yesterday evening ( strangly at 5.45pm ) and would,nt start . So took it today to the Vauxhall autospark i know and he checked it out on Tech 2 and found nothing registering anywhere at which point a mechanic was called across who said it was most likely a crank sensor fault . Is this most lkely the explanation or any other ideas ?? , if it is the crank sensor, what price am i looking at for one , and cost of installation Sad

Possibly, but not convinced. Crank sensor is a common fault, but normally leaves a code in the engine management.

Try it with foot hard to floor (shouldn't start) for 5s, then try normally, see what happens then...

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AllyM Junior Member Offline Posts: 97 Edinburgh Gender: Drives: Elite 3.2 V6	Re: Intermittent problem starting Reply #2 - 29. Apr 2008 at 18:31 Tried that , tried starting it with foot down , foot pumping accelerator , foot on brake , getting out the car and in again ( first thought was immobiliser ) tried swearing , talking nice !! ... stubborn bugger , ( did Vauxhall make gender specific cars
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Gooders Junior Member Offline Posts: 75 Doncaster South Yorkshire Gender: Drives: 2001 2.2 CD Auto Saloon	Re: Intermittent problem starting Reply #3 - 29. Apr 2008 at 20:38 Having similar problems with my 2.2 CD auto. IF I get to the bottom of it I will let you know. And you do the same please.. Gooders
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Gooders Junior Member Offline Posts: 75 Doncaster South Yorkshire Gender: Drives: 2001 2.2 CD Auto Saloon	Re: Intermittent problem starting Reply #4 - 29. Apr 2008 at 20:43 Have a look at my post "intermittent starting problems" on page 3. That gave me a good few ideas. Gooders
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AllyM Junior Member Offline Posts: 97 Edinburgh Gender: Drives: Elite 3.2 V6	Re: Intermittent problem starting Reply #5 - 30. Apr 2008 at 06:53 Cheers for that !! , mine,s tries to start but just won,t kick in ??
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Gooders Junior Member Offline Posts: 75 Doncaster South Yorkshire Gender: Drives: 2001 2.2 CD Auto Saloon	Re: Intermittent problem starting Reply #6 - 30. Apr 2008 at 20:15 Mines just totally dead as if the batts flat but it aint.
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TheBoy

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TBE has an MOT!

Posts: 64817
Brackley, Northants
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Drives: 98 MV6, 03 Elite, 00 25, 89 ZX10

Re: Intermittent problem starting
Reply #7 - 30. Apr 2008 at 20:32

AllyM wrote on 29. Apr 2008 at 18:31:

Tried that , tried starting it with foot down , foot pumping accelerator , foot on brake , getting out the car and in again ( first thought was immobiliser ) tried swearing , talking nice !! ... stubborn bugger , ( did Vauxhall make gender specific cars Grin

So what happens after cranking for 5s with foot through floorboards (not pumping), then attempting to start normally?

cranking at WOT disables injectors, and can clear a flooded engine (ie, if injectors are leaking when stood still)

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If you are going to kick a car, remember to wear appropriate footwear
Any posts are the result of my own views as a member of OOF, which may or may not be the same as my views as part of the Admin Team.

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Ally Newbie Offline Posts: 18	Re: Intermittent problem starting Reply #8 - 16. May 2008 at 19:34 Got the car back today , new crank sensor fitted , working well .................so far !!
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