displaying posts 1 to 18 of 18

Author Subject: fuel pump wont stop priming ?
seanys 306 rallye

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Location: galway/ireland

Registered: 24 Feb 2009

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Post #1
my fuel pump wont stop primimg its self even when i have the key out of the ignition it still primes its self Angry my radio stays on aswell any idea's of whats causing this ?Crazy Crazy Crazy

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Posted 17th Nov 2010 at 07:21
owain

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Location: Essex

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Post #2
It's being prepared, it was probably in the scouts Smile

Have you done anything funky with the radio wiring that could be shorting the ignition live to the constant live? There's a short between the two somewhere by the sound of things.

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Posted 17th Nov 2010 at 13:04
cjm_harris

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Post #3
Mine does this too. Has done it ever since my ECU died and had an unlocked one as a replacement.

Doesnt seem to of caused me any problems, but still something that concerns me.

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Chris
1999 China Gti6 Supercharged Devil [Fun car] >>Project Thread<<
2000 Bianca 306 Diesel [Work runabout]
Posted 17th Nov 2010 at 19:17
gilesy

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Post #4
LOL mine does this too, many a time after I've taken the key out of the ignition and heard it prime as I get out.

Definitely does this independent of the ignition electrics
Posted 17th Nov 2010 at 19:46
cjm_harris

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Post #5
gilesy wrote:
LOL mine does this too, many a time after I've taken the key out of the ignition and heard it prime as I get out.

Definitely does this independent of the ignition electrics


Yeah same Yes

Don't know how many times it does it, but have noticed it doing when key is not in ignition and also sometimes when car is still locked.

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Chris
1999 China Gti6 Supercharged Devil [Fun car] >>Project Thread<<
2000 Bianca 306 Diesel [Work runabout]
Posted 17th Nov 2010 at 19:55
owain

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Post #6
And everyone's okay with this...? Wink

Where's all this extra fuel going?! No wonder BP are minted Smile

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Posted 17th Nov 2010 at 19:57
gilesy

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Post #7
Well my thinking is that its not releasing fuel outside of the vehicle, only pressurising the system. Its not on constantly.

So I've left it!
Posted 17th Nov 2010 at 20:02
owain

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Location: Essex

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Post #8
Man I've got to get round to some of your houses and tap into some of fuel lines you're keeping primed for me! Big grin

I'm imagining these pumps priming 24 hours a day and big comedy cartoon bulging pipes everywhere, I do hope I'm not disappointed.

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Posted 17th Nov 2010 at 20:05
cjm_harris

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Post #9
I did think that when it primes it just gets pressure up to spec?

If it was pumping fuel to the engine, would I not get a big backfire on starting the car if there was excess fuel?

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Chris
1999 China Gti6 Supercharged Devil [Fun car] >>Project Thread<<
2000 Bianca 306 Diesel [Work runabout]
Posted 17th Nov 2010 at 20:25
owain

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Post #10
Correct, it'll only build up pressure to the injectors, which can't spray it into the engine without the ECU doing its thing.

I suspect if it just filled your engine with petrol you'd know about it when the first spark occurred Big grin

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Posted 17th Nov 2010 at 20:30
welshpug!

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Location: cwmcarn...

Registered: 26 Mar 2007

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Post #11
they have such things as fuel pressure regulators, and fuel return lines.

if its constantly doing so then check that the fuep pump relay is not damaged.

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Posted 17th Nov 2010 at 22:31
gti6neil

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Location: under the bonnet

Registered: 07 Jun 2010

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Post #12
this must be a catchy disorder my car keeps doing this now ???????????Crazy Unsure

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yeah the zx td is back on the road front mounted intercooler fitted fuel pump tweaks now required + turbo adjustment
Posted 23rd Nov 2010 at 03:49
manthos

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Post #13
mine does it once when i turn it off and take the key out.... or at least i think thats what its doing... doesn't do it all the time tho.

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Posted 23rd Nov 2010 at 04:33
arigti6

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Location: Trowbridge/Devizes, Wilts

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Post #14
I had this problem on mine a while back along with The engine running/reving on its own with the keys out of the ignition! Dunno Laugh took it to PUG They diagnosed it to be the double relay, Or at least thats what they told me. Was such a relief when it was sorted, did get a bit annoying after a while Crazy

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Posted 23rd Nov 2010 at 07:17
kiruji

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Location: Telford

Registered: 06 Apr 2010

Posts: 43

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Post #15
I've had this problem since owning the car. Every so often, the car will be parked and locked, and I'll hear it prime. No idea how much it does it when I'm not there, but it seems to stop after the car hasn't been driven for a while.

It didn't seem to be doing any harm, so I left it rather than chasing another electrical gremlin!
Posted 29th Nov 2010 at 16:55
daver6

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Location: Durham

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Post #16
Is it not working as a fuel cut off? My pump goes through the motions of priming just as the car is turned off

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Posted 30th Nov 2010 at 02:10
gti6mark

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Location: peterborough

Registered: 18 Sep 2007

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Post #17
mines done it for 3 years now, even after crashing it, when people ask what the noise is i tell them its the cool down of the after burners!!

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Posted 9th Dec 2010 at 20:19
seanys 306 rallye

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Location: galway/ireland

Registered: 24 Feb 2009

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Post #18
gti6mark wrote:
mines done it for 3 years now, even after crashing it, when people ask what the noise is i tell them its the cool down of the after burners!!


Laugh my ass off Laugh my ass off Laugh my ass off
my rallye is still doing it some morning im gonna look out that window and all im gonna see is soe guy givin me the finger as he drives off Sad

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TEAM(FIGHTIN IRISH)COMIN TO A PUB NEAR YOU !!!!
ps3 online name : butcherboy200
dyno print out : 185.4 at the flywheel
modern warfare 2 Wink
Posted 18th Dec 2010 at 05:16

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