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[Stump85]

My motor turns over but will not start, just replaced the fuel pump on it. still nothing. Dont think its the camshaft sensor just replaced it last year. Looking for the fuel relay but not sure where it is. Been without a ride for a week, I would really appreciate the help. Love my car and I dont want to give it up, its a 99 Omega Elite. Thanks alot for your help.

[alank46]

Hi
Do a paperclip test for fault codes.
Alan

[Stump85]

I will, let you know what it says. Thanks

[Kevin Wood]

Fuel pump and main engine relays are the 2 purple ones at the back of the triangular box by the battery.

Worth checking both of those.

Does the engine light flash when you're cranking it? If so, likely immobiliser issue.

Kevin

[ballcock50]

Had a problem with a v6 a few years back, had no power to pump at fuse but power out of relay so in frustration I linked a supply to pump fuse to start and move the car, after starting removed link and car continued to run had no problem after.

[RobG]

Knackered crank sensor will prevent fuel to injectors

[Stump85]

Just did the paperclip test getting a 12 and a 34 which means nothing. I dont have the equipment to test the relays so will probably buy a new one. Any other ideas?

[jonny66]

i have some spare relays if need be buddy. they came out my gsi veccy but are the same so i believe. :-/

[Stump85]

That would be great, I need a Siemens relay #90459642

[Stump85]

Just had the relay tested today it is good. Gonna hook the battery straight to the fuel pump again tomorrow and see if I missed something. Looks like a good ole tow if that anything else.

[Abiton]

What's the answer to Kevin's question about dash lights when cranking?

[Matchless]

On the V6 the fuel pump relay is only turned on once the ecu sees pulses from the crank sensor, ie the immobiliser has to be happy, the engine has to be turning and the crank sensor has to be generating good quality pulses.

[ballcock50]

I thought the fuel pump ran on ignition on for a few seconds to pressurise the system before start up.

[Marks DTM Calib]

I thought the fuel pump ran on ignition on for a few seconds to pressurise the system before start up.

Nope.

[vauxfan2k]

the 4 pot pressurises the fuel before cranking over, but not every time you turn on the ignition.

I just started the estate (2.5 v6) on monday for the first time in over a year and the pump did not run until the engine was cranked over, even then it only spun over for about 6 seconds before firing up.

If your certain the crank sensor is new/fully working then you should check the wiring to/from its connector, something isnt right.

the car should at least cough