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Author Topic: Intermittent problem starting  (Read 1319 times)

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AllyM

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Intermittent problem starting
« on: 29 April 2008, 18:20:00 »
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  :(
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TheBoy

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Re: Intermittent problem starting
« Reply #1 on: 29 April 2008, 18:22:24 »
Quote
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  :(
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

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Re: Intermittent problem starting
« Reply #2 on: 29 April 2008, 18:31:16 »
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  ;D ::)
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Gooders

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Re: Intermittent problem starting
« Reply #3 on: 29 April 2008, 20:38:05 »
Having similar problems with my 2.2 CD auto.  :yIF I get to the bottom of it I will let you know. And you do the same please.. Gooders
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Gooders

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Re: Intermittent problem starting
« Reply #4 on: 29 April 2008, 20:43:16 »
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

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Re: Intermittent problem starting
« Reply #5 on: 30 April 2008, 06:53:18 »
Cheers for that !! , mine,s tries to start but just won,t kick in ??
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Gooders

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Re: Intermittent problem starting
« Reply #6 on: 30 April 2008, 20:15:00 »
Mines just totally dead as if the batts flat but it aint.
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TheBoy

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Re: Intermittent problem starting
« Reply #7 on: 30 April 2008, 20:32:35 »
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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  ;D ::)
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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Ally

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Re: Intermittent problem starting
« Reply #8 on: 16 May 2008, 19:34:38 »
Got the car back today , new crank sensor fitted , working well .................so far !! ::) ::) ::)
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