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Author Topic: 2.6 mv6 intermittent starting problem.  (Read 546 times)

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gazzap

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2.6 mv6 intermittent starting problem.
« on: 30 May 2018, 14:32:04 »

Hey all, currently having a problem with my 2.6 omega estate, this group has been a godsend since purchasing my first omega, any queries or problems I've had i have found answer to on this forum, but this one has stumped me. Its recently been failing to start, sometimes it will and sometimes it will just turn over, no fault codes appear when it fails to start, but if i leave it for a while and go back it will randomly fire up fine, ive changed the crank sensor for a genuine one from Vauxhall (81  :'( ) checked all of the vacuum lines, fuel pump etc etc, battery is brand new, recently had a service, so have written all of the basic problems out. Im worried to drive her now as forking out for constant low loaders is hurting my wallet  :D atm ive got someone repairing my key as it won't re-sync with the car after a battery change, he did diagnose a faulty transponder ring, but I'm a slightly sceptical as the EML has never flashed me when its failed to start, any ideas or help would be highly appreciated, i don't want to get rid of her but i can't live with this as a common fault, thankyou  :)
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tunnie

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Re: 2.6 mv6 intermittent starting problem.
« Reply #1 on: 30 May 2018, 18:37:41 »

Recall the Estate fuel pump can be a bit weak when tank is a bit low, have you changed the fuel filter? Worth doing as it's a service item.  :y
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gazzap

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Re: 2.6 mv6 intermittent starting problem.
« Reply #2 on: 30 May 2018, 18:43:27 »

Recall the Estate fuel pump can be a bit weak when tank is a bit low, have you changed the fuel filter? Worth doing as it's a service item.  :y

Ive never let her get low on fuel and she always has the best  (shell v power) , and fuel filter was changed during the service too mate  :-\
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Doctor Gollum

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Re: 2.6 mv6 intermittent starting problem.
« Reply #3 on: 30 May 2018, 18:55:23 »

Could be the fuel pump beginning to fail, but you wouldn't be the first person to be given a duff new crank sensor :-\
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tunnie

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Re: 2.6 mv6 intermittent starting problem.
« Reply #4 on: 30 May 2018, 18:56:25 »

Recall the Estate fuel pump can be a bit weak when tank is a bit low, have you changed the fuel filter? Worth doing as it's a service item.  :y

Ive never let her get low on fuel and she always has the best  (shell v power) , and fuel filter was changed during the service too mate  :-\

When it fails to start, does the spanner light flash?  :-\
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gazzap

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Re: 2.6 mv6 intermittent starting problem.
« Reply #5 on: 30 May 2018, 19:03:01 »

Could be the fuel pump beginning to fail, but you wouldn't be the first person to be given a duff new crank sensor :-\

Its what I'm thinking too, I'm literally just fault chasing until its stops happening, expensive way of doing it i know  :D and i hope not!!! :'(
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gazzap

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Re: 2.6 mv6 intermittent starting problem.
« Reply #6 on: 30 May 2018, 19:04:56 »

Recall the Estate fuel pump can be a bit weak when tank is a bit low, have you changed the fuel filter? Worth doing as it's a service item.  :y

Ive never let her get low on fuel and she always has the best  (shell v power) , and fuel filter was changed during the service too mate  :-\

When it fails to start, does the spanner light flash?  :-\

Nope nothing flashes mate, it starts smooth and as it should, but just konks out a second later  :(
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Doctor Gollum

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Re: 2.6 mv6 intermittent starting problem.
« Reply #7 on: 30 May 2018, 19:06:20 »

Fuel pump :y
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tunnie

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Re: 2.6 mv6 intermittent starting problem.
« Reply #8 on: 30 May 2018, 19:06:44 »

Recall the Estate fuel pump can be a bit weak when tank is a bit low, have you changed the fuel filter? Worth doing as it's a service item.  :y

Ive never let her get low on fuel and she always has the best  (shell v power) , and fuel filter was changed during the service too mate  :-\

When it fails to start, does the spanner light flash?  :-\

Nope nothing flashes mate, it starts smooth and as it should, but just konks out a second later  :(

Sounds fuel pump to me, crank sensor would not allow it to fire. Sometimes immobiliser issues can cut it out after starting, but the spanner light would be flashing. (as you mention key sync issues)
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Doctor Gollum

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Re: 2.6 mv6 intermittent starting problem.
« Reply #9 on: 30 May 2018, 19:07:57 »

Unless the bulb has blown... Worth checking  ;)
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gazzap

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Re: 2.6 mv6 intermittent starting problem.
« Reply #10 on: 30 May 2018, 19:22:19 »

Recall the Estate fuel pump can be a bit weak when tank is a bit low, have you changed the fuel filter? Worth doing as it's a service item.  :y

Ive never let her get low on fuel and she always has the best  (shell v power) , and fuel filter was changed during the service too mate  :-\

When it fails to start, does the spanner light flash?  :-\

Nope nothing flashes mate, it starts smooth and as it should, but just konks out a second later  :(

Sounds fuel pump to me, crank sensor would not allow it to fire. Sometimes immobiliser issues can cut it out after starting, but the spanner light would be flashing. (as you mention key sync issues)

I really hope so, was going to be the first thing i changed when the problem started, but i thought that a fuel pump would either work or it wouldent, i didn't know they could be intermittent  ::) ha! I will change it tomorrow and see how it goes  :y thankyou matey :)
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gazzap

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Re: 2.6 mv6 intermittent starting problem.
« Reply #11 on: 30 May 2018, 19:23:49 »

Unless the bulb has blown... Worth checking  ;)

When i did the pedal test the spanner light flashed me, so that defiantly works, unlike the rest of the car atm  ;D
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iZirk

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Re: 2.6 mv6 intermittent starting problem.
« Reply #12 on: 30 May 2018, 23:42:33 »

Being an Estate check for fuel leakage under rear of petrol tank.

When it fails again, try this, key out, open door, shut door, lock door, unlock door, open door, shut door, key in, slowly go to poss 1, 2 then start.

Any other Keys with Transponder on the same key ring?
« Last Edit: 30 May 2018, 23:46:52 by zirk »
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grifter

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Re: 2.6 mv6 intermittent starting problem.
« Reply #13 on: 31 May 2018, 07:42:54 »

I had this on my 2.6 and it turned out clip holding plug onto throttle area was broke and the plug was drifting off causing intermittent connection and subsequent stalling. Just put a tie wrap round ot till i get round to splicing a new plug onto the loom.
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Re: 2.6 mv6 intermittent starting problem.
« Reply #14 on: 31 May 2018, 15:14:07 »

I had this on my 2.6 and it turned out clip holding plug onto throttle area was broke and the plug was drifting off causing intermittent connection and subsequent stalling. Just put a tie wrap round ot till i get round to splicing a new plug onto the loom.
.

Ar that's why I did the same to mine..  How one forgets.
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