Fuel cut off solenoid
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- Apprentice Bongonaut
- Posts: 9
- Joined: Tue Mar 10, 2020 12:51 pm
Fuel cut off solenoid
Hi all
I wondered if anyone can confirm if i can remove the fuel cut off solenoid without taking the fuel pump out???
It is running on after a decent run and wont stop when key is removed...
I might be able to clean it and put it back if i can remove it.
Thanks in advance.
Meant to say 2.5d 99 facelift.
I wondered if anyone can confirm if i can remove the fuel cut off solenoid without taking the fuel pump out???
It is running on after a decent run and wont stop when key is removed...
I might be able to clean it and put it back if i can remove it.
Thanks in advance.
Meant to say 2.5d 99 facelift.
- JulesMartin
- Bongolier
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- Joined: Fri Oct 04, 2019 11:15 am
- Location: Rainham, Essex
Re: Fuel cut off solenoid
I'm fairly certain that you can remove it without removing the pump but equally I would suspect it being an electrical problem rather than mechanical. have you check the wiring to the solenoid and feeds and earths when switching off? the fuel shut off soleniod is a hefty piece of work and you can feel it doing its job if you can get your fingers round it when switching the ignition on or off you will feel a definite clonk
Martin
1996 2.5 TDi Silver pop top unconverted
1996 2.5 TDi Silver pop top unconverted
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- Apprentice Bongonaut
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Re: Fuel cut off solenoid
Thanks MartinJulesMartin wrote: ↑Sat Jun 20, 2020 1:52 am I'm fairly certain that you can remove it without removing the pump but equally I would suspect it being an electrical problem rather than mechanical. have you check the wiring to the solenoid and feeds and earths when switching off? the fuel shut off soleniod is a hefty piece of work and you can feel it doing its job if you can get your fingers round it when switching the ignition on or off you will feel a definite clonk
I can definetely hear it clicking when ignition is switched on or off.
Voltage is also there when tested. Problem being that just sitting on driveway, engine starts and stops fine.
I might see if i can take it on a decent run and see if i can get engine to not stop. I could then check that there is power getting to solenoid at that point.
I figured that a hot engine would more likely be a mechanical issue than electrical.
Thanks again for help.
- JulesMartin
- Bongolier
- Posts: 216
- Joined: Fri Oct 04, 2019 11:15 am
- Location: Rainham, Essex
Re: Fuel cut off solenoid
If it doesn't do it when sitting still but does after moving that really does suggest a loose wire or dirty terminal somewhere
Martin
1996 2.5 TDi Silver pop top unconverted
1996 2.5 TDi Silver pop top unconverted
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- Apprentice Bongonaut
- Posts: 9
- Joined: Tue Mar 10, 2020 12:51 pm
Re: Fuel cut off solenoid
That does make sense. I had read on another thread that the solenoid can be removed and cleaned and i thought id do that, if easy, before trying to find an electrical problem.
Ill check all of the obviuos connections.
Thanks again
Ill check all of the obviuos connections.
Thanks again
- g8dhe
- Supreme Being
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Re: Fuel cut off solenoid
It will be a mechanical problem, not electrical, when power is applied the plunger opens the valve against a spring, if the power fails then the spring returns the plunger to the closed position. If it gets stuck, then when the power is removed it stays open - which is the situation you have.
Re: Fuel cut off solenoid
Its quite easy to remove the solenoid , it could a perished seal or a bit of foreign matter .
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- Apprentice Bongonaut
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- Joined: Tue Mar 10, 2020 12:51 pm
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- Apprentice Bongonaut
- Posts: 9
- Joined: Tue Mar 10, 2020 12:51 pm
Re: Fuel cut off solenoid
That was my thought but would be good to confirm that engine keeps running when power supply stops to solenoid.g8dhe wrote: ↑Sat Jun 20, 2020 10:22 am It will be a mechanical problem, not electrical, when power is applied the plunger opens the valve against a spring, if the power fails then the spring returns the plunger to the closed position. If it gets stuck, then when the power is removed it stays open - which is the situation you have.
It wont do it now ......
Many thanks