- Bx Bandit
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16v fuel pump relay
Right then, as I understand it, when you turn the ignition on, the fuel pump is turned on for about a second to top up the pressure in the line. Well, although I can hear the relay click on and then off after about a second but the fuel pump don't run (at least, I can't hear the fucker) and yet, it runs as soon as the engine is cranking/running. Is the relay that operates the f/p for a second the same relay that operates it when the engine is running? Or have I lost the plot??? Also, where is this relay/s???
....There he goes, one of God's own prototypes, a high powered mutant of some kind never even considered for mass production......too weird too live.....and too rare to die
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they dont always run when you turn the ignition on, it hought much the same as yourself, but mine doesn't seem to prime its self when turned on. As i understand it, it runs continuously and has no way of telling if its primed or not as the pressure is lost through the pressure regulator. Seriously strange goings on me feels!
- docchevron132
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Bloody hell....
The pump will only run whilst the crank is rotating, the ECU takes a signal from the CAS to switch the feed live for the pump, therefore you wont hear the pump running unless the engine is cranking or running.
Clever (ish) bit of design I guess...
The relay should click, but the pump shouldn't kick over (even for a second) to prime, as it doesn't need to, since it generates full pressure at the rail before the engine has completed one full rotation on the starter, or at least it should..
The pump will only run whilst the crank is rotating, the ECU takes a signal from the CAS to switch the feed live for the pump, therefore you wont hear the pump running unless the engine is cranking or running.
Clever (ish) bit of design I guess...
The relay should click, but the pump shouldn't kick over (even for a second) to prime, as it doesn't need to, since it generates full pressure at the rail before the engine has completed one full rotation on the starter, or at least it should..
1989 BX 17TD P2 Hybrid
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.
- Bx Bandit
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Right then mate, that makes sense and it means my bitch is behaving...so wtf does this relay click in for a second or so and what do it do..?docchevron1472 wrote:Bloody hell....
The pump will only run whilst the crank is rotating, the ECU takes a signal from the CAS to switch the feed live for the pump, therefore you wont hear the pump running unless the engine is cranking or running.
Clever (ish) bit of design I guess...
The relay should click, but the pump shouldn't kick over (even for a second) to prime, as it doesn't need to, since it generates full pressure at the rail before the engine has completed one full rotation on the starter, or at least it should..
....There he goes, one of God's own prototypes, a high powered mutant of some kind never even considered for mass production......too weird too live.....and too rare to die
- docchevron132
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Where exactley is the click coming from dude??
Under the bonnet or somewhere in the cabin?
I suspect what your hearing is the ABS relay powering up..
Although it could be the injection relay that does click in and out then kinda doesn't click again even though it stays live till you shut the ignition off...
Under the bonnet or somewhere in the cabin?
I suspect what your hearing is the ABS relay powering up..
Although it could be the injection relay that does click in and out then kinda doesn't click again even though it stays live till you shut the ignition off...
1989 BX 17TD P2 Hybrid
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.
- Bx Bandit
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- Bx Bandit
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- Posts: 6641
- Joined: 16 Nov 2006
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okily dokily frienderinos......................rekon my 16v is a ho tho'....such a mooody fucking cow.....but she sounds good with a hard trashing....I'm gonna tame ma beeeyatch.........sweet Jesus I 'will' tame maaa beeyatch
....There he goes, one of God's own prototypes, a high powered mutant of some kind never even considered for mass production......too weird too live.....and too rare to die
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I think you're right Vanny - the relay click is coming from the ABS block area so I guess that's what it was.
What would be the effect of dis-connecting the knock sensor? I use 97 Ron but I'll nip up to tescos in a bit and put some 99 in.
There are other issues to discuss but I'll post 'em individually...
What would be the effect of dis-connecting the knock sensor? I use 97 Ron but I'll nip up to tescos in a bit and put some 99 in.
There are other issues to discuss but I'll post 'em individually...
....There he goes, one of God's own prototypes, a high powered mutant of some kind never even considered for mass production......too weird too live.....and too rare to die
- docchevron132
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Er, well, the ECU will probably revert to base settings, so you'll lose some performance, although I dont know alot about the 3 row ECU..
I should imagine the K light will stay on though..
It'll still run mind you..
I should imagine the K light will stay on though..
It'll still run mind you..
1989 BX 17TD P2 Hybrid
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.
1990 BX 16V It's got big hairy bollocks
1971 BL 350FG ambulance
1993 Dennis Lance 132 It's got mahooosive hairy bollocks!
Euthenasia, because enough's enough already.