Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: mick-1975 on 29 August 2011, 14:56:04
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hi all ,hope you can help me . i went to work and car ran fine came to it after work and again started and ran great. Then while on the way home i lost all power and the car came to stop in middle of a island (not good )
After looking at it i have found that there is no fuel getting through when i press the pressure release valve. The car will try and turn over but not start .
The relays only make a noise once then nothing unless i take them out and back in again
Fuel pump not buzzing when ignition switches on
Any ideas of what this could be as im back at work later and going devon in 2 weeks .
thanks alot . really need to get this sorted asap.. :y
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Have you checked fuse #18 in cabin :question
Spanner light on :question
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spanner light did come on i checked them earlier but ill double check now for u
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if fuse fine would check the electrics plug above the tank, faling that motor may have gone.
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checked fuse all ok
checked coonector above tank and all is good
i have tried a test light to the pump to see if light comes on and its dead. do u know which one is the live wire as thinking off a direct feed from a battery to see if it works .
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If the spanner light is staying on, need to get codes read, possibly an 0335. Any spark at the plugs :question No fuel, no spark = crank sensor
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got o obd2 tester from local shop and does not show crank sensor at all .
can the crank sensor cause all this with fuel problems as well
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got o obd2 tester from local shop and does not show crank sensor at all .
can the crank sensor cause all this with fuel problems as well
Faulty crank sensor doesn't always throw a fault code.
Your fuel problems could be result of bad crank sensor - as RobG says above "No fuel, no spark = crank sensor" - check spark at plugs mate.
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ill check them now then and get back to u all
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had this problem on a 2.0 16v ecotec cavalier a few years ago.same symptons as your having,diagnosed as crank sensor,swopped it and away it went..:@)
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been back out and checked spark and guess what
i have a spark at all 4 plugs .
so what now ??
NO FUEL.... BUT SPARK
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check volts at pump if volts, then pump gone..
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tryed to use a test light and nothing not even a sound when ignition turned on .
doing my head in as need it for work
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Fuel pump easy enough to change on an estate. Cheap ish too, 'bout £50 iirc. :y
Being an auto, could it be the selector switch? :-/
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The relays only make a noise once then nothing unless i take them out and back in again
Fuel pump relay's are quite common failure items on Vx's, I think there the red/purple ones located under the bonnet.
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Not seen a fuel pump relay fail on a VX since the mid 90's on the pre Ecotec cars.
If you pop the lid off the main pump relay and press the contacts in with your finger, does the pump run?
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hi mark could u tell me which one of the 2 is the mail pump relay ? as when under bonnet there two purple relays which are the fuel pump relays . thanks
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Fuel pump is rear right (usualy as you can swap them round)
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we have swopped them round and when the ignition switches on we can hear them energise then nothing if we try again with ignition there is nothing at the relays untill we take them out and in again .
need this sorting as work again tonight . doing my head in
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As said, pop the lid off the right hand side one and press the contacts together whilst the ignition is on.
Get somebody to check the fuel pump runs whilst doing this and also check for the fuel at the rail.
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As said, pop the lid off the right hand side one and press the contacts together whilst the ignition is on.
Get somebody to check the fuel pump runs whilst doing this and also check for the fuel at the rail.
ill try that now and post back .
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As said, pop the lid off the right hand side one and press the contacts together whilst the ignition is on.
Get somebody to check the fuel pump runs whilst doing this and also check for the fuel at the rail.
ill try that now and post back .
took both tops off the relays and there making contact when ignition is on .
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And when you press them can you hear the fuel pump run?
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there were making contact but still no fuel in fuel rail so guess pump not working .as could not hear anything
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tried all above and still nothing working dont know what else to do. might have to get some one out to it as need the car for work and was going devon a week saturday .
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Lift the boot carpet and remove the metal inspection plate in the boot.
Check the fuel pump wiring connections and if you can, check for the presence of volts on the terminals.
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checked the wireing all is ok .
any ideas how to check the volts as no volt meter
we put ignition on and used a test light and got nothing at all .
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Use a test light and get somebody to press the relay under the bonnet.
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ill try that one .
just phoned up main deeler and ask how much crank sensor and told them about it there saying that the crank sensor would not stop the fuel getting through.
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ill try that one .
just phoned up main deeler and ask how much crank sensor and told them about it there saying that the crank sensor would not stop the fuel getting through.
just an idear but can you get under the rear of the tank and above were the fuel filter is there is a wire or 2 and a plug see if it is still in??
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checked round the filter all seems to be ok cant see anything out of place
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Either put a jumper from ECU pin 3 to pin 2 or remove the fuel pump relay and bridge the two contacts with a short wire link with two spade connectors attached and get someone to crank engine while you listen for the pump. Failing that, apply 12v direct to the pump
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Fuel pump easy enough to change on an estate. Cheap ish too, 'bout £50 iirc. :y
Being an auto, could it be the selector switch? :-/
And the rest :o
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ive ordered a crank sensor as people are telling me that it could be the problem .as someone a friend knows had the same problem and he changed the sensor so just got to wait for it to arrive in stock . i shall do as you say and try that .
if not think it be towed to main deeler im affraid or scrap . as really doing me head in
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Forget the crank sensor, you haven`t got a code for it and on the 2.2 a failed C/S will always throw a 0335. Put 12v direct to the pump. If it doesn`t run the pump is knackered. I`ve got a working one here if it`s donald
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do u know which wires are the earth and live as got full tank of fuel .
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do u know which wires are the earth and live as got full tank of fuel .
all done after changing fuel pump not another fault . see next post