Topic: LPG switching off (Read 5774 times)

b4ndit · « **on:** 22 November 2015, 12:48:54 »

Hi, my lpg switches itself off at 60 mph and above but is fine at 5o and below has anyone any ideas
many thanks

Lazydocker · « **Reply #1 on:** 22 November 2015, 13:32:00 »

Need more info than that... System type. Make and model of system. Any other symptoms? Just started or been like it all along?

I would hazard a guess that it can't supply enough gas, but there are many potential reasons for that which full info would help diagnose

b4ndit · « **Reply #2 on:** 22 November 2015, 15:01:18 »

It's a stag system on a 2.6 no other symptons and has been like it for a while now only happens when I get on the dual carriageway or motorway. I have checked the coolant flow and no problems all connections are new and tight, no problems in the wiring that I can see just need to try and find out why it switches back to petrol at 60 and above

Lazydocker · « **Reply #3 on:** 22 November 2015, 15:11:54 »

You need to get it plugged in to see what's going on. Do we know who fitted it? Has it always done it?

tunnie · « **Reply #4 on:** 22 November 2015, 15:23:45 »

Very odd. So if you red line it at say 50 in second gear, it's fine?

b4ndit · « **Reply #5 on:** 22 November 2015, 15:52:54 »

It was fitted by me following the guide. if I red line it it will be ok until it hits 60mph. and it has always done it it has been plugged in and came up with coolant flow which I checked on Friday and made sure it was all working properly, its just starting to get on my nerves now and if I can't fix it or get it fixed I think I will have to pull the whole kit off as it is a waste of time having it on if it ddoes not work correctly. thanks
Terry

STEMO · « **Reply #6 on:** 22 November 2015, 15:57:50 »

When you drop back below 60 does it switch back to petrol on it's own?

b4ndit · « **Reply #7 on:** 22 November 2015, 16:00:40 »

Not until it goes below 30 or if I come to a stop and it is ticking over it will change back to gas

STEMO · « **Reply #8 on:** 22 November 2015, 16:04:10 »

Did it start happening when the weather got colder?

Migv6 le Frog Fan · « **Reply #9 on:** 22 November 2015, 16:10:41 »

I wouldn't be surprised if the coolant has been plumbed in the easy way. I.E. the wrong way.

b4ndit · « **Reply #10 on:** 22 November 2015, 16:12:59 »

not been doing it when weather got colder started well before that. what's the easy way of plumbing it in thanks

Lazydocker · « **Reply #11 on:** 22 November 2015, 17:54:14 »

Ok. What vaporiser is it? And have you plumbed the coolant feed from before the HBV?

b4ndit · « **Reply #12 on:** 22 November 2015, 17:58:15 »

Vapouriser is a kme and the coolant feed is plumbed from the back of the block to a t piece and into the vapouriser then back from the vap to the return pipe on the hbv if that makes any sense
thanks

Lazydocker · « **Reply #13 on:** 22 November 2015, 19:26:22 »

Quote from: b4ndit on 22 November 2015, 17:58:15

Vapouriser is a kme and the coolant feed is plumbed from the back of the block to a t piece and into the vapouriser then back from the vap to the return pipe on the hbv if that makes any sense
thanks

Do you know which KME? Twin vapour outlets?

b4ndit · « **Reply #14 on:** 22 November 2015, 19:27:48 »

will have a look tomorrow but think it only has one outlet

Lazydocker · « **Reply #15 on:** 22 November 2015, 20:41:52 »

Quote from: b4ndit on 22 November 2015, 19:27:48

will have a look tomorrow but think it only has one outlet

In that case it could be underrated. But it doesn't sound like that is the main problem.

Next time it does it, see if you can get stopped somewhere safe and pop the bonnet - the vapouriser should be hot to the touch, uncomfortably so. That's a simple test. I think you will need to get your lead and laptop out

Does it give any warning bleeps when switching back?

b4ndit · « **Reply #16 on:** 22 November 2015, 21:19:51 »

the vapouriser will burn if you touch it and I get no warning beeps only had one set of beeps once and that was three beeps. I will take the car for a long run on gas and then get on the bypass and get some speed up and pull into the first layby and check the vapouriser again thanks for the help

Lazydocker · « **Reply #17 on:** 22 November 2015, 23:06:22 »

It's worth plugging in and checking for codes and live data

b4ndit · « **Reply #18 on:** 23 November 2015, 08:17:13 »

will do thanks

Kevin Wood · « **Reply #19 on:** 23 November 2015, 10:48:10 »

Quote from: Lazydocker on 22 November 2015, 20:41:52

Quote from: b4ndit on 22 November 2015, 19:27:48
will have a look tomorrow but think it only has one outlet

In that case it could be underrated. But it doesn't sound like that is the main problem.

Next time it does it, see if you can get stopped somewhere safe and pop the bonnet - the vapouriser should be hot to the touch, uncomfortably so. That's a simple test. I think you will need to get your lead and laptop out

Does it give any warning bleeps when switching back?

Worth checking the temperature of the tank while doing this too. If it's getting very cold, likely the dip tube has fallen off, or some muppet has installed the tank upside down, and the liquid is boiling off in the tank instead of the vapouriser. You'll get exactly these symptoms.

Gaffers · « **Reply #20 on:** 23 November 2015, 10:55:20 »

Quote from: Kevin Wood on 23 November 2015, 10:48:10

Quote from: Lazydocker on 22 November 2015, 20:41:52
Quote from: b4ndit on 22 November 2015, 19:27:48
will have a look tomorrow but think it only has one outlet

In that case it could be underrated. But it doesn't sound like that is the main problem.

Next time it does it, see if you can get stopped somewhere safe and pop the bonnet - the vapouriser should be hot to the touch, uncomfortably so. That's a simple test. I think you will need to get your lead and laptop out

Does it give any warning bleeps when switching back?

Worth checking the temperature of the tank while doing this too. If it's getting very cold, likely the dip tube has fallen off, and the liquid is boiling off in the tank instead of the vapouriser. You'll get exactly these symptoms.

Yeah, dont I know it?

Kevin Wood · « **Reply #21 on:** 23 November 2015, 10:56:33 »

Quote from: Monsieur Guffer on 23 November 2015, 10:55:20

Quote from: Kevin Wood on 23 November 2015, 10:48:10
Quote from: Lazydocker on 22 November 2015, 20:41:52
Quote from: b4ndit on 22 November 2015, 19:27:48
will have a look tomorrow but think it only has one outlet

In that case it could be underrated. But it doesn't sound like that is the main problem.

Next time it does it, see if you can get stopped somewhere safe and pop the bonnet - the vapouriser should be hot to the touch, uncomfortably so. That's a simple test. I think you will need to get your lead and laptop out

Does it give any warning bleeps when switching back?

Worth checking the temperature of the tank while doing this too. If it's getting very cold, likely the dip tube has fallen off, and the liquid is boiling off in the tank instead of the vapouriser. You'll get exactly these symptoms.

Yeah, dont I know it?

Good point. Post edited accordingly.

Gaffers · « **Reply #22 on:** 23 November 2015, 11:12:49 »

Quote from: Kevin Wood on 23 November 2015, 10:56:33

Quote from: Monsieur Guffer on 23 November 2015, 10:55:20
Quote from: Kevin Wood on 23 November 2015, 10:48:10
Quote from: Lazydocker on 22 November 2015, 20:41:52
Quote from: b4ndit on 22 November 2015, 19:27:48
will have a look tomorrow but think it only has one outlet

In that case it could be underrated. But it doesn't sound like that is the main problem.

Next time it does it, see if you can get stopped somewhere safe and pop the bonnet - the vapouriser should be hot to the touch, uncomfortably so. That's a simple test. I think you will need to get your lead and laptop out

Does it give any warning bleeps when switching back?

Worth checking the temperature of the tank while doing this too. If it's getting very cold, likely the dip tube has fallen off, and the liquid is boiling off in the tank instead of the vapouriser. You'll get exactly these symptoms.

Yeah, dont I know it?

Good point. Post edited accordingly.

Actually in my case the tank was the right way up, it was the valve box and dipstick which had been installed upside down by the previous owner me'lud

Entwood · « **Reply #23 on:** 23 November 2015, 11:18:56 »

Quote from: Monsieur Guffer on 23 November 2015, 11:12:49

Quote from: Kevin Wood on 23 November 2015, 10:56:33
Quote from: Monsieur Guffer on 23 November 2015, 10:55:20
Quote from: Kevin Wood on 23 November 2015, 10:48:10
Quote from: Lazydocker on 22 November 2015, 20:41:52
Quote from: b4ndit on 22 November 2015, 19:27:48
will have a look tomorrow but think it only has one outlet

In that case it could be underrated. But it doesn't sound like that is the main problem.

Next time it does it, see if you can get stopped somewhere safe and pop the bonnet - the vapouriser should be hot to the touch, uncomfortably so. That's a simple test. I think you will need to get your lead and laptop out

Does it give any warning bleeps when switching back?

Worth checking the temperature of the tank while doing this too. If it's getting very cold, likely the dip tube has fallen off, and the liquid is boiling off in the tank instead of the vapouriser. You'll get exactly these symptoms.

Yeah, dont I know it?

Good point. Post edited accordingly.

Actually in my case the tank was the right way up, it was the valve box and dipstick which had been installed upside down by the previous owner me'lud

in an LPG system

or are you describing the "fitter" ....

Gaffers · « **Reply #24 on:** 23 November 2015, 11:56:47 »

Quote from: Entwood on 23 November 2015, 11:18:56

Quote from: Monsieur Guffer on 23 November 2015, 11:12:49
Quote from: Kevin Wood on 23 November 2015, 10:56:33
Quote from: Monsieur Guffer on 23 November 2015, 10:55:20
Quote from: Kevin Wood on 23 November 2015, 10:48:10
Quote from: Lazydocker on 22 November 2015, 20:41:52
Quote from: b4ndit on 22 November 2015, 19:27:48
will have a look tomorrow but think it only has one outlet

In that case it could be underrated. But it doesn't sound like that is the main problem.

Next time it does it, see if you can get stopped somewhere safe and pop the bonnet - the vapouriser should be hot to the touch, uncomfortably so. That's a simple test. I think you will need to get your lead and laptop out

Does it give any warning bleeps when switching back?

Worth checking the temperature of the tank while doing this too. If it's getting very cold, likely the dip tube has fallen off, and the liquid is boiling off in the tank instead of the vapouriser. You'll get exactly these symptoms.

Yeah, dont I know it?

Good point. Post edited accordingly.

Actually in my case the tank was the right way up, it was the valve box and dipstick which had been installed upside down by the previous owner me'lud

in an LPG system or are you describing the "fitter" ....

Go easy on me lads, not had enough coffee to type proper this morning yet

b4ndit · « **Reply #25 on:** 23 November 2015, 16:40:16 »

[/quote]

Worth checking the temperature of the tank while doing this too. If it's getting very cold, likely the dip tube has fallen off, or some muppet has installed the tank upside down, and the liquid is boiling off in the tank instead of the vapouriser. You'll get exactly these symptoms.
[/quote]
will do thanks

Lazydocker · « **Reply #26 on:** 23 November 2015, 21:00:59 »

Yeah... Hadn't even thought of that Kevin.

b4ndit · « **Reply #27 on:** 26 November 2015, 16:18:03 »

Tried plugging the lpg in and it just keeps coming up with no lpg/cng controller any ideas have downlodes the software from the stag site as instructed and loaded onto laptop but it will not connect with the car

Lazydocker · « **Reply #28 on:** 26 November 2015, 16:27:16 »

Quote from: b4ndit on 26 November 2015, 16:18:03

Tried plugging the lpg in and it just keeps coming up with no lpg/cng controller any ideas have downlodes the software from the stag site as instructed and loaded onto laptop but it will not connect with the car

Have you downloaded the correct version? And have you got the driver too?

b4ndit · « **Reply #29 on:** 26 November 2015, 16:34:16 »

Hi LD, according to the stag site it is the correct version and by driver do you mean the driver for the usb lead? thanks

Shallow Al · « **Reply #30 on:** 26 November 2015, 18:40:43 »

....and you have a usb to serial converter in the lead?
Plus driver, or no connection will be made.
Sorry if I am butting in or wrong, but I needed one on mine....

b4ndit · « **Reply #31 on:** 26 November 2015, 19:23:51 »

yes have all of that

Lazydocker · « **Reply #32 on:** 26 November 2015, 20:28:41 »

Quote from: b4ndit on 26 November 2015, 16:34:16

Hi LD, according to the stag site it is the correct version and by driver do you mean the driver for the usb lead? thanks

Yes, driver for lead.

Version varies dependent on whether it is a 300, 300 Plus or 300 Premium. Also on what Firmware is on it already.

b4ndit · « **Reply #33 on:** 26 November 2015, 20:46:18 »

thanks going to have another go tomorrow and see what hapens

Lazydocker · « **Reply #34 on:** 26 November 2015, 22:31:16 »

Quote from: b4ndit on 26 November 2015, 20:46:18

thanks going to have another go tomorrow and see what hapens

I'm guessing you don't have the laptop from setting it up?

b4ndit · « **Reply #35 on:** 26 November 2015, 22:44:52 »

No that laptop went kaput so have a different one now

Lazydocker · « **Reply #36 on:** 26 November 2015, 22:51:55 »

Shame. I would guess that you need a different version of the software and it will connect ok.

b4ndit · « **Reply #37 on:** 27 November 2015, 11:34:37 »

Update I have tried to connect to the lpg system again this morning and so far have had no luck at all I have updated the driver for the lead and have the latest software version but it still says no lpg controller any help much appreciated thanks

Kevin Wood · « **Reply #38 on:** 27 November 2015, 11:45:55 »

If you look in Device Manager on the PC, the LPG cable should appear as a COM port under "Ports (COM & LPT)" when it is connected. If that doesn't happen, then the device driver has a problem.

Once you get that far, the LPG software should find the ECU automatically, but you can set the COM port number in the software to force it to use the correct port.

If it still doesn't find the ECU, then I'd suggest that the software is the wrong version for the firmware on the ECU.

The earliest Stag 300s were never updated beyond version 1.14.1.0 and will communicate with nothing else. This version is in a separate section of the download page: http://www.ac.com.pl/en/doc/346/instructions-software.

b4ndit · « **Reply #39 on:** 27 November 2015, 12:14:35 »

Thanks Kevin that's the version I have will double check the com port again and see if it makes any difference

b4ndit · « **Reply #40 on:** 27 November 2015, 12:24:19 »

just tried the lead and it finds it no problem but will still not talk to the gas ecu getting to the end of my tether with this system will have to put it into an lpg installer and see if they can sort it if not its coming off thanks for the help off everyone

STEMO · « **Reply #41 on:** 27 November 2015, 12:27:45 »

Just stay below 60. Most blokes your age do.

Kevin Wood · « **Reply #42 on:** 27 November 2015, 12:30:06 »

Quote from: STEMO on 27 November 2015, 12:27:45

Just stay below 60. Most blokes your age do.

Degrees or MPH?

STEMO · « **Reply #43 on:** 27 November 2015, 12:34:31 »

Quote from: Kevin Wood on 27 November 2015, 12:30:06

Quote from: STEMO on 27 November 2015, 12:27:45
Just stay below 60. Most blokes your age do.

Degrees or MPH?

KPH mostly.

b4ndit · « **Reply #44 on:** 27 November 2015, 13:03:41 »

Quote from: STEMO on 27 November 2015, 12:27:45

Just stay below 60. Most blokes your age do.

I will do when I reach your age

T.m.f · « **Reply #45 on:** 27 November 2015, 16:03:31 »

You also need to leave the ignition on for laptop to connect to ecu

Kevin Wood · « **Reply #46 on:** 27 November 2015, 16:07:06 »

Quote from: T.m.f on 27 November 2015, 16:03:31

You also need to leave the ignition on for laptop to connect to ecu

Good point. I think the ECU accepts connections for a few minutes after the ignition is turned on, so best to switch on ignition immediately before each try.

b4ndit · « **Reply #47 on:** 27 November 2015, 16:23:12 »

I have had the ignition switched on for each time I have tried

Lazydocker · « **Reply #48 on:** 27 November 2015, 21:51:14 »

I'd guess that you need the later version then

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Author Topic: LPG switching off (Read 5774 times)

STEMO

STEMO

STEMO

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