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[tigers_gonads]

Mine is throwing up a Gas Pressure too high warning when the car is warming up.
Normally within the fist 5 minutes of running.
Stag software says the gas pressure is around the 1.1 mark or slightly lower from start upto normal running temp.
Manifold pressure is around the 0.3 mark again from cold through to normal temp.
Once you have travelled a few miles from cold, you get no problem.

Have I got a dodgy sensor ?


TIA 

[Chazza12]

Check the fuel tank purge switch it’s the breather for the tank  located around the front window screen wiper motor. Should be able to blow down the pipes. Also check the seal on the fuel tank filler.  As that’s the secondary vent seal for pressure

[Doctor Gollum]

If only people could read... 

Where is the sensor located in the engine bay? Could simply be a result of heat transfer from an adjacent coolant pipe

[TheBoy]

Is this before it switches to gas?  If so, wonder if the shut off solenoids (normally one in vap and one on tank valve) are not shutting off

(assuming this is the sensor between the vap an injectors)

[tigers_gonads]

Check the fuel tank purge switch it’s the breather for the tank  located around the front window screen wiper motor. Should be able to blow down the pipes. Also check the seal on the fuel tank filler.  As that’s the secondary vent seal for pressure

LPG mate 
Thanks 

[tigers_gonads]

If only people could read... 

Where is the sensor located in the engine bay? Could simply be a result of heat transfer from an adjacent coolant pipe

Its strapped to the cable tray that runs across the front of the engine.
Same place its been on 2 V6's over 6 years so I doubt that's the cause

[tigers_gonads]

Is this before it switches to gas?  If so, wonder if the shut off solenoids (normally one in vap and one on tank valve) are not shutting off

(assuming this is the sensor between the vap an injectors)

No

It is always during the first few minutes of running on lpg when it can be a little lumpy.
Once the temprature starts to rise, its running with no problem 



Yes

The pipe is inline on the pipe from one side of the KME Gold Vapeoriser to the 2,4,6 bank


The vapeoriser water feed is taken from the block to the vaporiser then back to the HBV so it gets a nice flow of coolent.

[Doctor Gollum]

Can you easily swap it to the 135 side?

[zirk]

Is this before it switches to gas?  If so, wonder if the shut off solenoids (normally one in vap and one on tank valve) are not shutting off

(assuming this is the sensor between the vap an injectors)

No

It is always during the first few minutes of running on lpg when it can be a little lumpy.
Once the temprature starts to rise, its running with no problem 



Yes

The pipe is inline on the pipe from one side of the KME Gold Vapeoriser to the 2,4,6 bank


The vapeoriser water feed is taken from the block to the vaporiser then back to the HBV so it gets a nice flow of coolent.

Should the Vap not take its feed just before the HBV and then back in after the Heater Matrix. ie, in parallel with the HBV / Matrix

[tigers_gonads]

Can you easily swap it to the 135 side?

Not without chopping pipes 

[tigers_gonads]

Is this before it switches to gas?  If so, wonder if the shut off solenoids (normally one in vap and one on tank valve) are not shutting off

(assuming this is the sensor between the vap an injectors)

No

It is always during the first few minutes of running on lpg when it can be a little lumpy.
Once the temprature starts to rise, its running with no problem 



Yes

The pipe is inline on the pipe from one side of the KME Gold Vapeoriser to the 2,4,6 bank


The vapeoriser water feed is taken from the block to the vaporiser then back to the HBV so it gets a nice flow of coolent.

Should the Vap not take its feed just before the HBV and then back in after the Heater Matrix. ie, in parallel with the HBV / Matrix

I cut the top pipe which goes from the thermostat - HBV and put the vaporiser inline so you get a constant flow.


I will proof read what I type one day 

[zirk]

Should the Vap not take its feed just before the HBV and then back in after the Heater Matrix. ie, in parallel with the HBV / Matrix

I cut the top pipe which goes from the thermostat - HBV and put the vaporiser inline so you get a constant flow.


I will proof read what I type one day 

If you suspect the Vap or a Tempreture issue, cheapest way to start is to give a good Flush and Reverse Flush the Vap as few times, whats the Coolant like and when was it changed last.

I had a Corsa Temp / Vap issue recently that was throwing all sorts of wonderfull problems at me, about 4 flushes later with Dish washer tablets and a drop of Fernox in the Cooling Sysytem soon sorted out over a few weeks, best do iut now before the Cold Weather licks in

[tigers_gonads]

Should the Vap not take its feed just before the HBV and then back in after the Heater Matrix. ie, in parallel with the HBV / Matrix

I cut the top pipe which goes from the thermostat - HBV and put the vaporiser inline so you get a constant flow.


I will proof read what I type one day 

If you suspect the Vap or a Tempreture issue, cheapest way to start is to give a good Flush and Reverse Flush the Vap as few times, whats the Coolant like and when was it changed last.

I had a Corsa Temp / Vap issue recently that was throwing all sorts of wonderfull problems at me, about 4 flushes later with Dish washer tablets and a drop of Fernox in the Cooling Sysytem soon sorted out over a few weeks, best do iut now before the Cold Weather licks in

Mmmmm 

I have been setting the heater to 20 deg at start up over the past few days but couldn't make up my mind if it was any better of not 

Last coolant change must be getting on for 3 years ago when the piggin oil cooler went 
Even though the heater matrix gets hot pretty quick, it can't do any harm to pull the pipes off the vaporiser and give it a flush.

Come to think of it, I did have a problem earlier on in the year with the gas pressure fluctuating but thought it may be the vaporiser which after all is 6 years old now.

Me thinks you might be onto something there 
I'll have a play over the next few days .................

Cheers lads 

[TheBoy]

At what temp are you switching to LPG. In TBE (KME Gold, Motogas shitty injectors), I have to raise it significantly to prevent stalling.

[zirk]

Should the Vap not take its feed just before the HBV and then back in after the Heater Matrix. ie, in parallel with the HBV / Matrix

I cut the top pipe which goes from the thermostat - HBV and put the vaporiser inline so you get a constant flow.


I will proof read what I type one day 

If you suspect the Vap or a Tempreture issue, cheapest way to start is to give a good Flush and Reverse Flush the Vap as few times, whats the Coolant like and when was it changed last.

I had a Corsa Temp / Vap issue recently that was throwing all sorts of wonderfull problems at me, about 4 flushes later with Dish washer tablets and a drop of Fernox in the Cooling Sysytem soon sorted out over a few weeks, best do iut now before the Cold Weather licks in

Mmmmm 

I have been setting the heater to 20 deg at start up over the past few days but couldn't make up my mind if it was any better of not 

Last coolant change must be getting on for 3 years ago when the piggin oil cooler went 
Even though the heater matrix gets hot pretty quick, it can't do any harm to pull the pipes off the vaporiser and give it a flush.

Come to think of it, I did have a problem earlier on in the year with the gas pressure fluctuating but thought it may be the vaporiser which after all is 6 years old now.

Me thinks you might be onto something there 
I'll have a play over the next few days .................

Cheers lads 

Ive had quiet a few LPG Cars over the years now, all VX's ranging from 1.2 to 3.2, pretty much all of them have thrown a wobbly at some point or have come with the car when I acquired it, pretty much all the issues have been temperature related to do with the cooling system, or more to the point lack of heat or water flow, they all have thrown weird and wonderful faults ranging from Gas Pressure, Injector , solinold freezing, Miss fire, Ing issues or just switched back to Petrol or been slow to swtich on Gas.

Whilst Im no expert on LPG, water temp and flow would always be first call on any system that was working correctly, its a cheap fix should prove to sort the problem.