engine doesn't shut off

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marcot

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yesterday my volvo d3 110 started as usual (key not button) , but it didn't shut off simply by turning the key . I used the emergency shut of button on the engine.
I changed the key and its mechanism but no success.

any idea?
marc
 
There is a solenoid on the fuel injection pump. Part 5 in this diagram.

23675.jpg


I assume that is the solenoid that operates the fuel valve.

It or the valve may be sticking or the control system or a relay may be defective.

Check the power supply to this solenoid. If it is on when you switch the engine to the run position and off when you switch off again it more or less confirms that the control system is Ok and the solenoid and valve are not functioning.

The solenoid costs an arm and a leg but it might just be the same part as used on a vehicle engine which might be less expensive.

If the power does not turn on and off as above then you may need the help of an Volvo engineer. Volvopaul will be along shortly I expect.
 
sharppractice said:
Had the same thing on 63p volvo was just a loose connector to the solenoid. Hope yours a cheap fix too.
Click to expand...

A slightly different system I think you will find. The 63P has a stop position on the key switch I think? Yes?
Turning the key to that energises the solenoid to stop the engine.

The D3 110 does not have a stop position you just switch off like you do with car.
I'd deduce from that the solenoid in this case is energised to run . The engine stops when the solenoid is de-energised.

The difference could be somewhere in the control circuit of course but without an electrical wiring diagram its difficult to know.
 
The way I understand it from the workshop manual for my D4 is that EVC controlled common rail engines like the D series do not have stop solenoids like injector pumps, or even injector pumps for that matter, the fuel delivery and injection on the two types are as different as chalk & cheese, they are shut down using entirely different methods to that used on pumps where the solenoid simply pulled on the same shut off lever that a cable could use and that stopped delivery to the injectors . I'm sure VolvoPaul will explain further when he gets around to it but I’m not even convinced that the valve in the picture has anything to do with actually stopping the engine.
 
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I dont think the solenoid would be operating a lever that a cable might attach to. I think it probably operates valve in the incoming fuel supply to the pump. ( Like it does on car sytems, at least in the two diesel cars I've had)
I notice its called a high pressure pump on the D4 but what looks similar is called an injector pump in the D3!

But there are 2 different varieties of the D3I-110 A, B, C versions and a D3I-110 D which has a totally different fuel system. We dont know which the Op has. He just says D3-110.

The D4 manual I have looked at shows a key switch with a stop position. So that presumably operates differently to a D3 that does not have a stop position.

You could be right the solenoid in the diagram might be f totally different but it does appear to be right next to the fuel inlet
 
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VicS said:
There is a solenoid on the fuel injection pump. Part 5 in this diagram.

23675.jpg


I assume that is the solenoid that operates the fuel valve.

It or the valve may be sticking or the control system or a relay may be defective.

Check the power supply to this solenoid. If it is on when you switch the engine to the run position and off when you switch off again it more or less confirms that the control system is Ok and the solenoid and valve are not functioning.

The solenoid costs an arm and a leg but it might just be the same part as used on a vehicle engine which might be less expensive.

If the power does not turn on and off as above then you may need the help of an Volvo engineer. Volvopaul will be along shortly I expect.
Click to expand...

What you are looking at is the fuel metering control valve on the back of the Bosch CP3, which actually controls fuel intake volume to the pump. This valve is controlled via the ECU using negatively triggered PWM signal. This is NOT a simple stop solenoid. Do not be tempted to go screwing around with it!

No mention of the vessel application, new installation or re-power. Needs a Volvo guy to sort out as I would suspect some Mickey Mouse non adherance to Volvo wiring guidelines and engine is getting a back feed somewhere.
 
ECU shuts that off completely to stop the engine ? implying an ECU fault or is there a stop device or valve somewhere else .
 
No, ECU simply shuts off PWM trigger signal to injectors to stop engine.

The fuel metering control valve has two basic positions, when solenoid de-energised valve open giving low volume intake to the pump. When energised, valve closes giving high volume to the pump.

Operation of the control valve is monitored by the ECU, if open or short curcuit is detected engine and will not start, DTC is stored in ECU and fault light is illuminated.

As no fault light strongly suspect ECU is obtaining power from another source.

Bosch EDC 16 system is simple and reliable. I would still go for the Goofy factor.
 
Latestarter1 said:
No, ECU simply shuts off PWM trigger signal to injectors to stop engine.
Click to expand...

That's the confirmation I was looking for, but now I am even more confused, it has been assumed that this engine is normally stopped simply by turning the key off, I have learned that all D (3, 4 & 6 anyway) series starter switches have the same 2 part #'s but my D4 requires the key to be turned anti clockwise past the off position against a spring pressure to stop, not that I imagine it is relevant as the OP's switch has been changed for new.
 
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That's the confirmation I was looking for, but now I am even more confused, it has been assumed that this engine is normally stopped simply by turning the key off
Click to expand...
IIRC the OP said elsewhere that was the case. It is confirmed by the owners manual. See page 44

But there are several versions of the engine. This one has a stop position on the switch. see page 52.
That would explain the same part number as for the D4 I guess.
 
marcot said:
yesterday my volvo d3 110 started as usual (key not button) , but it didn't shut off simply by turning the key . I used the emergency shut of button on the engine.
I changed the key and its mechanism but no success.

any idea?
marc
Click to expand...

Bit of a long shot but before you instruct a VP engineer you should dip the oil to check its not overfull which can cause your engine to run on.

Its a fault recognised by Volvo (cars) with the equivalent D5 engine caused by bio fuel additives, you shouldnt suffer with the same bio fuel issue but if someone has overfilled your oil it will have a similar effect.
 
VolvoPaul or Spannerman, purleeeeese :)

Aargh! - I suggested the OP post here after getting misguided (but well intentioned) advice about stop solenoids on PBO, and all the bleedin' mis-advisers follow :D

Marcot - if you can get a reply from Volvopaul, or Spanner man, I'm sure they know this engine.

(DAKA's point is good, too).

Andy
 
DAKA said:
Bit of a long shot but before you instruct a VP engineer you should dip the oil to check its not overfull which can cause your engine to run on.

Its a fault recognised by Volvo (cars) with the equivalent D5 engine caused by bio fuel additives, you shouldnt suffer with the same bio fuel issue but if someone has overfilled your oil it will have a similar effect.
Click to expand...

The Op said he stopped the engine with the emergency stop button.

Would the emergency stop be effective if the trouble was due to over filling of the oil?
It wouldn't would it?
 
misterg said:
Aargh! - I suggested the OP post here after getting misguided (but well intentioned) advice about stop solenoids on PBO, and all the bleedin' mis-advisers follow :D

Marcot - if you can get a reply from Volvopaul, or Spanner man, I'm sure they know this engine.

(DAKA's point is good, too).

Andy
Click to expand...

The OP has done himself no favors in not giving replies to simple question i.e is this a re-power or original installation?

Comment from DAKA regarding oil level is not the issue here. The marine version of the engine does not have post injection even in the base calibration. The post injection event can lead to engine 'making' oil' if DPF fails to regenerate engine than runs on the oil/fuel mix. The run on caused by this mix is no orderly affair.

I suspect that engine is just sitting there idling like glass, refusing to stop, and showing no fault codes.

The reason I ask if this is repower is simple, many installers fail to RTFM! (Read The FXXXXXG Manual). ECU is probably having a little game with the owner, knows he is trying to shut the motor down, however it is smart enough to know where it can get some juce.

Had all manner of problems on some early trucks with electronic engines due to poor quality heater motors, with heater blower on, engine would not shut down unless heater blower turned off removing the source of the back feed.
 
here some more hints.

engine is model D3i 110 b year 2006, 1800 hrs.

no lights on the lcd display.

engine is an orignal installation.
 
Just on the case, the valve in the picture is the m prop valve which maintains the fuel pressure in the common rail system, don't go playing with it"!!!

As late starter says the signal to the injectors simply shuts off the fuel from the ecu, maybe you simply have a problem on the engines loom or even ignition switch, I'd start at the switch as it nothing special and can be simply tested with a meter to make sure when you turn the key it actuall operates, if you have stopped the engine at the emergency end then there is nothing wrong with the actual system it's more loom or switch problem I'd say.
 
I guess its a back feed from the alternator. You can test this by removing the wire (small one) from terminal 61 on the alternator. There is a diode in the electronic box to prevent this. The guess is that it has failed in the short circuit mode (or a wire has got trapped and shorted). The diode is inside the electronic box and can be a trial to get into. I suggest you get a specalist involved.
 
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