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Author Topic: wont start  (Read 5625 times)

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biker

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wont start
« on: 14 December 2007, 08:49:48 »
 :'( Can anyone help me with a problem that has occured, my pride and joy wont start,  gone through the usual checks, fues etc, but I have noticed that the fuel pump is not making any noise is there a relay or something else I need to check, I tried a direct feed wire from the batt to the pump and it works the pump, well it makes a noise in the engine bay so i presume its working, if its a relay could you point me to the right one in the fuse box.

 :y thanks in antipitation, dave.. :(
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Re: wont start
« Reply #1 on: 14 December 2007, 08:50:38 »
Model? Engine? Year?
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Grumpy

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Re: wont start
« Reply #2 on: 14 December 2007, 09:04:51 »
I see from your previous post that you have a 2.5 V6.
The fuel pump is in the fuel tank. So I don't know
what you've shorted out with your lead, or what the noise
is you are hearing in your engine bay?

The fuel pump will only run for a few seconds to prime the
fuel system for starting. It will then be signalled to run again
by the ECU when the ECU receives a valid signal from the
Crank Sensor.

Do a paperclip test and see if you have any codes.

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

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Re: wont start
« Reply #3 on: 14 December 2007, 09:27:41 »
Yup, paper clip test required....it is classic crank sensor failure.
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biker

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Re: wont start
« Reply #4 on: 14 December 2007, 14:02:49 »
OK, done the paper clip thing, reading code 31, still no wiser does some kind person have the codes to hand.  :-[ had a look round to no avail....
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tunnie

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Re: wont start
« Reply #5 on: 14 December 2007, 14:05:38 »
Quote
OK, done the paper clip thing, reading code 31, still no wiser does some kind person have the codes to hand.  :-[ had a look round to no avail....

code 31 means no rpm signal, this is normal when the engine is off.

I take it the engine cranks, and it tries to fire?
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biker

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Re: wont start
« Reply #6 on: 14 December 2007, 15:13:22 »
 engine turns over but doesn't fire, took fuel lines off no fuel preasure there but it was stood over night would it make a difference to the preasure?? I have ordered new crank sensor for tomorrow hope this might be the problem,  :'( :'( :'(
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Marks DTM Calib

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Re: wont start
« Reply #7 on: 14 December 2007, 15:16:34 »
Two things to try

1) Try cranking for a few seconds with a small amount of throttle applied (to rule out an idle valve stuck shut)

2) Try swapping the two purple relays in the engine bay fuse box....they are the two closest to the screen
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biker

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Re: wont start
« Reply #8 on: 14 December 2007, 15:21:31 »
Ok done the relays already, will try the throttle thing in a mo- god its freezing
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Marks DTM Calib

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Re: wont start
« Reply #9 on: 14 December 2007, 15:23:28 »
Does the ECU light flash?
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biker

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Re: wont start
« Reply #10 on: 14 December 2007, 21:46:55 »
It flashes the code fault is this what you mean  :-/
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Jimbob

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Re: wont start
« Reply #11 on: 14 December 2007, 21:48:56 »
I Think Mark meant, does the ECU light flash when you attempt to start, as this indicates the immobiliser is stopping you.
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biker

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Re: wont start
« Reply #12 on: 14 December 2007, 22:41:03 »
thanks for that jim, will look in the morning as i am shattered
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biker

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Re: wont start
« Reply #13 on: 15 December 2007, 07:47:09 »
ok senario is that the ecu light does not flash when turning it over?? is this indicating to the dreaded cam sensor problem then  >:( :o
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Re: wont start
« Reply #14 on: 15 December 2007, 08:32:43 »
Quote
ok senario is that the ecu light does not flash when turning it over?? is this indicating to the dreaded cam sensor problem then  >:( :o

Have you done the paper clip test on it yet?
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