Just a thought, it's fascinating to see that many owners of Supercharged cars seem to be having the same problems as me, i.e. gearbox gremlins, engine light issues, etc.

It's very easy to pin the blame on LPG (if it's been fitted), especially if the problem appears post conversion. However in the case of the gearbox gremlin I heard from the P.O. that this was a problem six months ago. However had I not spoken to him I might be inclined to blame the LPG.

Having spoken to a tranny specialist they think it's probably the mechatronic software from my description of the fault, so are proposing to reflash it. There is a TSB relating to this, at least as far as the 2-1 shift is concerned.

As for MIL issues, well my car had the MIL light on when i test drove it (pre-conversion), and another forum user (presumably with a normal petrol S/C has just posted about intermittent MIL issues.

I'm not saying LPG conversions are all perfect and never cause issues, but it's interesting to note that many of the issues commonly blamed on LPG seem to happen to cars which are not converted!

My only other issue is that on cold starts, I have to blip the throttle to start it, well I can accept that it's difficult to set up a car to run on two fuels, especially since it'll turn off on LPG, then start up on petrol. If I have to live with this 'problem' of having to blip the throttle on a cold start, I'll accept that! Or do any S/C owners find they have to do this anyway on unconverted cars? Range Rover-less at the moment - Pining!

I used to find that if I stopped my S/C while running on gas and then started from cold it took several turns of the starter before it next started but if I ran on petrol before stopping it started from cold on the first turn of the starter. I don't know why? I was told the petrol fuel pump was permanetly primed when running on gas so its wasn't a lack of fuel on start up from cold.

my dad has a sport s/c and his mil is always coming on and when i plug it in there is no fault found ....not lpg may i add "RANGEISM WILL NOT BE TOLERATED"
www.futuresecurityservices.co.uk
Pretlove says , '' I want my car back "

Regarding your startup issue, is it doing this?

http://www.youtube.com/watch?v=_B0qx9jmb7E

If so, there's a (possibly new) LTIB to address it.

http://www.fullfatrr.com/forum/topic3812.html

I'm watching your thread with interest as I also considered converting my SC to LPG, but then read all the horror stories and was not prepared to to be a guinea pig.

Whats the delay with the gearbox issue, IIRC you mentioned the ECU upgrade last week but its still not been done? Push the dealer/ seller to get it flashed ASAP so you can confirm whether thats sorted it, or whether they need to continue the investigation. My cold start-up problem took 3 trips to the dealers to get it finally fixed.

Good luck getting your car sorted, I really hope its running perfectly on LPG soon.

Cheers

Justin 
Gone - Range Rover Supercharged 2006

It seems to be an identical problem, so I'll ask my specialist about the TIB for that too.

The dealer who supplied the car is being no help. I'm getting the car sorted myself. If I succeed, I'll invoice him for the costs, otherwise county court. If not, I'll return the car, or county court.

I'd rather do it this way, otherwise if I just send it back to him it could take ages, and I won't know if things have been fixed properly. i gave him a chance to sort it himself, and he hasn't taken that chance, so now I'll get it done properly and bill him!

Car is going to a local specialist tomorrow for the gearbox reflash.

Sounds like S/C's are not exactly low maintenance at the best of times! Range Rover-less at the moment - Pining!

Did you not get any kind warranty when you bought it?

Yes, so though the dealer asked me not to contact the warranty company yet, I think he's probably responsible for the initial period, (they won't pay out if a dealer has supplied a car with a known fault).

So it's just more leverage to make him cough up! Range Rover-less at the moment - Pining!

Ahhhh that's ok then. For a minute I thought you had bought it without so no comebacks for him. Hope you get it all sorted and the lpg running well. It's horrible at the best of times when ya cars not working but even worse when you've just bought it. My SC's in the garage at the mo having a replacement steering column under my extended warranty. I've had mine since October last year. The place where I bought mine from was liable for first 3 months then exstended after that. dealer and warrenty company couldn't have been more helpful.

Again hope it all works out. Really looking forward to seeing a SC running on lpg perfectly.

Cheers

That's encouraging, just been reading the warranty documents, mine is with Motorcare, plenty of horror stories about the net on them, but then people only post with complaints about such things, and many people (and dealers), take the mickey with warranties, so I guess they have to apply some judgement and rules about which claims they pay.

The tranny specialists say they get claims paid by warranty companies all the time, so it should be OK.

Just sent the dealer an e-mail saying if he doesn't contact me first thing I'll put in a claim to the warranty company, fed up of messing around!

I'm pleased with the LPG aspect so far, I think the performance is the same, except it's more satisfying putting your foot down whilst on LPG! Only pain is more frequent pit stops, range of around 200 miles on gas, though if one wants more range could use a tank of lpg followed then go onto petrol, giving 5-600 mile range for £170.

Do S/C's run perfectly usually? Seem to be a few with Engine Management Lights on! Range Rover-less at the moment - Pining!

Gripping tightly onto wood whilst typing this...


Mines been great, I've had it since September last year, the startup issue I posted on youtube only occurred when it was less than 4 degrees C outside, had the car not been under warranty I would have lived with that problem.

I also experienced a flat battery on the 2nd day of ownership, thankfully the LR dealer I bought the car from payed for a replacement.

Other than that I've had a new set of wipers front and rear and had the rear screen washer jet unblocked.

My cars now covered 42K, of which I've driven the last 4K - so far the engine and gearbox have been faultless.

Cheers

Justin 
Gone - Range Rover Supercharged 2006

Hi Guys,
When I had mine converted last year (4.4 BMW engine) Andy the LPG installer said he had done a supercharged and was having countless problems with it. He said it was a trait of the jag engine. He was working with the manufacturers (KME) to sort the problem and they had decided that they wouldn't install to supercharged untill they had sorted the issue. Not much help but it's not a one off problem. I'm due to see him soon as I need advice with my system and removing bits for maintenance. When im there will ask if they got to the bottom of it and what they did.

JustinP wrote:

Gripping tightly onto wood whilst typing this...


Mines been great, I've had it since September last year, the startup issue I posted on youtube only occurred when it was less than 4 degrees C outside, had the car not been under warranty I would have lived with that problem.

I also experienced a flat battery on the 2nd day of ownership, thankfully the LR dealer I bought the car from payed for a replacement.

Other than that I've had a new set of wipers front and rear and had the rear screen washer jet unblocked.

My cars now covered 42K, of which I've driven the last 4K - so far the engine and gearbox have been faultless.

Cheers

I don't suppose you ever got the code for the TIB which fixed your cold start stalling problem did you Justin? Sounds like that's what I need. I'll get the gearbox fixed first anyway.



Justin

Sorry I don't have the LTIB number, I emailed the dealer, but they did not cone back to me with the number. However i was told when I collected the car it was a software update to the power control ecu, hopefully that should be sufficient for your dealer to identify the number. 
Gone - Range Rover Supercharged 2006

Justin - you referring to yours running LPG or running petrol?

Mine has been great, it's not converted - we had an issue with all the HDC, ABS, etc., lights coming up and the reason was put down to a faulty electric motor that controls the rear diff (or diff lock out not sure which). A new one was fitted FoC and it then required some sort of download for the ECU.

Since then, utterly brilliant - one year of ownership and 12k miles with one issue, fixed quickly and painlessly.

Mines still as Land Rover intended running on petrol only. 
Gone - Range Rover Supercharged 2006