Stephen McVarnock

It is completely safe (bomb proof is a very good phrase for it). Runs with minimal impact on performance on my car (to the tune of losing 2 mpg at the last calculation). Not sure what you mean by 'ruins the car'.

You might not ask, but I bloody well will! :-) Ask him where he gets it and send me a private message with the details :-)

Dearest here is 81p a ltr. Cheapest is 76p a ltr. Petrol is between 1.33 and 1.44 depending on where you go and what you are buying. 40p cheaper, 60p cheaper - its still significantly cheaper.

Updated another thread as it might have been related. http://www.briskoda.net/forums/topic/180828-lpg-gas-conversion/

http://www.briskoda.net/forums/topic/256637-car-dies-while-driving/#entry3023078 Just a follow-up on this (very old) thread. I reported an issue with the car dying in the above link. I had had this intermittent issue since converting to gas (see Posted 03 January 2011 - 16:06 above). What I thought to be a gas problem may in fact have been a dodgy crank sensor that had been in place since the conversion. I had been getting a running rich/lean error on the ECU for nearly two years (it would come and go) but I thought it was to do with the new fuel mix more than anything else. Since the crank sensor has been replaced the above error code has yet to reappear. And the stall problem has also gone. Just thought I would add this for the sake of completeness....

Garage fitted a new crank sensor yesterday. Car has since done 210 miles with no sign of any issues. No warnings from the ECU. no loss of power, no stalling. Definitely looks like it was the source of the issue. There is a feeling that the crank sensor issue could also have led to the running rich/running lean warning..... Thanks to all for the help on this matter. cheers!

Decided to run the car on just petrol for the past day. Still got the warning lights http://engine-codes....volkswagen.html http://engine-codes.com/p0335.html But the running rich/lean warning was conspicuous by it's absence. So for now the crankshaft sensor is now the main focus of investigation. Car will be left into the garage today. DIY just was not cutting it. Notes on driving on petrol - car displayed stall behaviour as before just after turning on engine, notable loss of power, the occasional juddering feeling and a sense of 'stop-go-stop-go' when driving in lower gears. The economy of the car also seems to have taken a mighty hit.

Ok, so this morning the car started with no problem (see previous post). Having looked at all the info on the various forums decided to chek the MAF. Unplugged the MAF and the car ran without an issue, on plugging the MAF back in the car stalled immediately. Cleaned out the MAF - did not appear to be overly dirty. Car seemed fine after this. Also cleaned as many of the connectors/sensors we could see. Came back later and started the car. Walked away to see how it would do idling would it died during idling. This was a first. Previously the car had only died while driving and slowing down. Started the car several times and experienced the same thing. In order to get past this I had to press on the accelerator - once the car was sufficiently warm it no longer died. It looks like the problem has been exacerbated by what we tried. Did get several new codes up on the ECU though (as a result of cleaning connectors/sensors?) http://engine-codes.com/p0172_volkswagen.html http://engine-codes.com/p0322_volkswagen.html http://engine-codes.com/p0335.html This first one I have been getting since the car was converted to LPG and had been explained away by the installer of the LPG due to the difference in fuel mix required between petrol/LPG and air. Happy enough to accept it at the time. But this error also covers a faulty MAF sensor. So what am I dealing with here? Is the culprit the MAF? Or am I looking at a multitude of sins that need fixing?!?!

If no-one obects I'll keep adding (almost) daily updates - almost as a tracker for myself to see how the problem develops - or not. The car this morning suffered no power loss at all. However one thing I did notice was that the car struggled for a few seconds shortly after start-up. This lasts a few seconds only. I have seen this previously. Before I had assumed a problem with the spark plugs which were replaced (and needed replaced!). I have, however seen this problem on occassion since then. Once again, this is intermittent in nature - and happens on the petrol. Going to have another look today - all suggestions will be taken on board. Rgds, Steve.

There is a fault code (engine running rich/lean) - but this has been in place since the car was converted to LPG. So that won't help resolve this particular problem unfortunately. Not relevant to this particular problem unfortunately.

Other suggestions include something called an idle air control valve which I have referenced on other forums but not here - so not even sure if such a part exists in the Skoda Octavia 1.6....but thought I would throw it into the mix. Steve.

Folks, I have a Skoda Octavia Silverline 1.6 petrol engine car that has been converted to run on LPG. Recently I have started having a major issue with the car and I am hoping that a few heads on here may have come across the same problem and can offer advice/suggestions. Background On Monday past, the car went completely dead (loss of power steering, breaking becomes more difficult) after breaking hard. Engine warning light came on (running on petrol - car had only been running a few minutes) I had to turn off the wipers and lights in order for it to start up correctly - it struggled otherwise (petrol) The car stalled a couple of more times within 5 minutes of driving after that (petrol) About 1 hour later I noted that the car seemed to suffer a loss of power and started to shudder when driving at around 45 mph in 5th gear. It felt like she was about to stall even with the foot on the accelerator. It passed after 5-10 seconds. Had to drop down the gears. (running on LPG) I then noticed on the way home a noticeable loss of power when climbing up a moderately inclined road (LPG) The car displayed a lack of power the following day but only suffered one stall (LPG/petorl?) After that the car was fine for a few days On Sunday (today), the car stalled again while driving (the battery warning light coming on). This happened several times in quick succession (petrol) The problem of the car going dead seems to happen while slowing down/breaking/while clutch is in going down through the gears. On letting out the clutch again the car engine seems to re-engage (as long as I am not fully stopped) We have checked the battery (which had only been replaced 2 months ago) and the voltage is within expected boundaries We have ruled out an altenator issue Visually checked the connections and visual inspection seems fine. Checked the air-inlet pipes and these seem fine. The problem does seem to be intermittent in nature As I said, the car has been converted to run on LPG. I experienced similar problems when the car cut over from petrol to gas but that happened on really cold days during the bad winters a couple of years ago. That was resolved by increasing the cutover time to allow the engine to get warmer. I don't think this is the same problem. I have however noted that the car does die if I manually go back from gas to petrol shortly after the automatic cutover. If the car is warm enough this does not happen. There is no issue going from petrol to gas though. I have found a similar problem on the forums here:- www.briskoda.net/forums/topic/136206-engine-dies-while-driving-then-starts-again/page__hl__+car +dies +while +driving#entry1707246 So the problem's root cause could be one of the following according to the above post:- Fuel pump relay Electrical short circuit fuel sensor (not sure what was meant here - fuel pressure regulator I assume?) However there were other suggestions that I found on other forums (non-skoda specific) coil pack air flow meter So the question is has anyone else on here experienced this issue? How was it resolved? Can anyone suggest the best way to root cause the problem? Can anyone suggest the most likely candidate for the issue and in what order to clean/repair/replace the parts as described above i.e. go with the fuel pump relay first, followed by the coil pack. All advice most greatly received! Cheers, Steve.

Photos - hopefully ye can all see the link. Like i said, the quality of the camera work isn't the best but you're getting this work for free! http://s1118.photobucket.com/albums/k601/Stephen_McVarnock/Skoda%20Silverline%20running%20on%20LPG/

The bad (cold!) weather exposed the first real issue with the system. the car stalls when trying to go from petrol to gas. The criteria for the cut-over is engine temp reaching a certain point or two minutes of the car being started. Of course first thing in the morning when the temps are below -15 it takes a while for the car to reach optimal running temp so after two minutes the cutover to gas is attempted. Thats when the problem occurs. Not overly put out by this TBH - its simply a matter of hooking the system up to the computer and either removing the time criteria or upping it to maybe three minutes - which should be plenty of time for the engine to get warmer. Going to post some links to photos of the final job - not the greatetst in quality but I can't be arsed retaking them ;-) Still a happy camper with the whole thing.

Already there dude. :-)