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Author Topic: car wont fire up on the odd occasion  (Read 1994 times)

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wedge07

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car wont fire up on the odd occasion
« on: 23 August 2010, 23:04:05 »
hi my friend is having a problem starting his car on random days. it will turn over but wont fire up. hes had a new battery fitted and tested but it still doing this. it dosent matter what the weather is like, it can be freezing, raining or really hot but it wont fire up. this only happens occansionly and when it does happen, he will go back a few hours or a day later and it will fire up straight away.
anybody got any ideas on what this can be?
the car is a 2.5 v6 automatic omega.
any ideas are appreciated
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Broomies Mate

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Re: car wont fire up on the odd occasion
« Reply #1 on: 23 August 2010, 23:19:37 »
Intermittent immobiliser problem?

When the starter is engaged, is it trying to fire and wont start, or is it simply just turning over?
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wedge07

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Re: car wont fire up on the odd occasion
« Reply #2 on: 24 August 2010, 00:52:01 »
it is just turning over. dosent even make the effort to fire up???
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Broomies Mate

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Re: car wont fire up on the odd occasion
« Reply #3 on: 24 August 2010, 01:05:10 »
Need to have a look at lights on Dash, look for the Immobiliser light.

What year is the car?
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dbug

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Re: car wont fire up on the odd occasion
« Reply #4 on: 24 August 2010, 16:24:50 »
Check the codes (paperclip it or use a code reader)

Bet its got a code 19 - symptoms are classic of failing crank sensor  :y
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wedge07

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Re: car wont fire up on the odd occasion
« Reply #5 on: 24 August 2010, 22:32:14 »
i think its n reg will have a look tomoz cheers, n tell him to look for immobliser when it next does it. cheers
plus what is paperclip test and how do you do it? :) cheers
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PhilRich

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Re: car wont fire up on the odd occasion
« Reply #6 on: 25 August 2010, 09:17:24 »
Quote
i think its n reg will have a look tomoz cheers, n tell him to look for immobliser when it next does it. cheers
plus what is paperclip test and how do you do it? :) cheers


Have a look here  :y
http://www.omegaowners.com/forum/YaBB.pl?num=1189022687
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jay69

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Re: car wont fire up on the odd occasion
« Reply #7 on: 29 August 2010, 12:37:13 »
check crank sensor  :)
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v8cobra

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Re: car wont fire up on the odd occasion
« Reply #8 on: 30 August 2010, 17:26:37 »
New to forum dont want to hijack thread but my 3.2 omega has just started with the same symptoms
Thought I solved the problem 8 months ago with crank position sensor(ran with no problems)
Just started similar symptoms again

Can the cam shaft sensor give a similar problem.
Help would be appreciated
Steve
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CaptainZok

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Re: car wont fire up on the odd occasion
« Reply #9 on: 30 August 2010, 17:27:43 »
Quote
New to forum dont want to hijack thread but my 3.2 omega has just started with the same symptoms
Thought I solved the problem 8 months ago with crank position sensor(ran with no problems)
Just started similar symptoms again

Can the cam shaft sensor give a similar problem.
Help would be appreciated
Steve
Genuine or pattern crank sensor?
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Jimbob

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Re: car wont fire up on the odd occasion
« Reply #10 on: 30 August 2010, 17:28:31 »
Quote
New to forum dont want to hijack thread but my 3.2 omega has just started with the same symptoms
Thought I solved the problem 8 months ago with crank position sensor(ran with no problems)
Just started similar symptoms again

Can the cam shaft sensor give a similar problem.
Help would be appreciated
Steve


do the pedal trick again.

Unlikely to be cam, most likely crank again,
was it genuine or pattern, how did you run the cable to it?
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v8cobra

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Re: car wont fire up on the odd occasion
« Reply #11 on: 31 August 2010, 10:55:41 »
Fitted by GM dealer but not in my area too far to go back to them
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v8cobra

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Re: car wont fire up on the odd occasion
« Reply #12 on: 31 August 2010, 12:26:28 »
Did pedal trick again constant flashing light
Naturally it is starting okay at the moment!
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