Page 1 of 2 12 LastLast
Results 1 to 10 of 12

Thread: Please help Re LPG conversion!

  
  1. #1
    Status
    Offline
    Thanassi's Avatar
    AOC Newbie
    Join Date
    Nov 2009
    Posts
    6
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)

    Please help Re LPG conversion!

    Hi guys and girls,

    I need some expert advise on a problem I'm having with my Astra 1.6 SXi sport hatch (2007)

    It's 2.5 years old (July 2007). In July 2008 I got it Lpg converted at a specialist mechanic in Poland (recommended to me by my in laws who have all had their cars done there). When I brought it back with all the paperwork and stuff my mechanic told me it was the best lpg job he'd seen. It's been running perfectly for over a year (over 10.000 miles)

    A few weeks ago it starting stalling in the morning, after about 5 minutes from a cold start. At first I worried it was the Lpg when auto changing from petrol but then ran it on petrol only and it did the same fault. Every single day at exactly the same time.

    I took i to the dealer (as in warranty) and asked him to have a look. His computers came up with no fault so he blamed the Lpg. I explained that I tried it with the lpg switched off but had the same problem but he told me I had to take it back to the guys that installed it (impossible).

    After a dissagreement I called a Lpg fitter here in the UK who suggested that with my system (BRC) all we needed to do was
    a) pull the fuse out to disconnect it and if still problems
    b) run it on petrol for a few miles and then try a cold start again.
    My dealers service guys tried and the fault was still there.

    The dealer called today to say that Vauxhall technicians suggester changing the crank shaft sensor as they may be faulty with Astras. Dealer tried this but same problem. Vauxhall are now saying that because they don't recommend Lpg on Astras I need to have it looked at at my own expense at an LPG specialist. I will do this and ask for written proof that it is not the fault of the LPG.

    1) Does anyone know if such a document is possible and can be used as proof?

    The dealers seems to suggest that even if proved that the fault is with the car Vauxhall might declare that the warranty is void because of the conversion. Before getting it converted I called the customer services and they assure me the warranty will not be void (unless of course fault is with LPG system itself)!

    2) Does any one know if this could be the case?

    And finally...

    3) Does anyone know what the fault might be?

    My own mechanic suggested it could be the air mask meter, but he can't deal because of warranty and he is not LPG specialist.

    Any help would be MUCH appreciated...

    Thanks!
    Thanassi

    PS I'm not very technical!

  2. #2
    Status
    Offline
    nry's Avatar
    Cumbria RO | Club Team
    Join Date
    Mar 2008
    Posts
    25,986
    Mentioned in
    48 Post(s)
    Quoted
    1 Post(s)
    I'm not hot on MK5 stuff, but is there a way to read ECU error codes on these models e.g. the pedal test? Does your engine management light ever come on?

    Not recommending LPG on Astras is rubbish, they've offered factory conversions for years (albeit many were done by Milbrook ater being built), I own one on a MK4 1.6 16v with 151k on now!

    If the cutting out occurs on petrol and LPG then it does suggest it isn't LPG related but it could well be as there are links between the LPG and petrol ECU for controlling things like injectors/timing etc.

    You may have to take this to a UK LPG garage/dealer at the end of the day, and using a non-Dealer mechanic for other work should not invalidate the warranty, they are not legally allowed to enforce such a rule.

  3. #3
    Status
    Offline
    Thanassi's Avatar
    AOC Newbie
    Join Date
    Nov 2009
    Posts
    6
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    Thanks nry. No fault light comes on when the car stalls. The computer at the dealers didn't detect any faults either. I spoke to my local LPG mechanic and he suggested removing the fuse and trying it. He said if the problem is still there it definitely won't be the LPG fault. Still had the same prolem.

    I'll take it to the LPG mechanic to check it out. If he finds no fault with the LPG do you think Vauxhall will fix the fault under warranty? Before I got it done customer services assured me it would not affect the warranty...


    Thanks

  4. #4
    Status
    Offline
    nry's Avatar
    Cumbria RO | Club Team
    Join Date
    Mar 2008
    Posts
    25,986
    Mentioned in
    48 Post(s)
    Quoted
    1 Post(s)
    If they give you any hassle then speak to customer services again and remind them of your previous call about warranty - if still no joy then speak to Trading Standards who may well be very helpful, they helped me a few times with Vauxhall refusing to cover some repairs under warranty.

  5. #5
    Status
    Offline
    Thanassi's Avatar
    AOC Newbie
    Join Date
    Nov 2009
    Posts
    6
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    nry, that's great. thanks for the advice

  6. #6
    Status
    Offline
    clanless's Avatar
    AOC Fanatic
    Join Date
    Jun 2006
    Posts
    494
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    Tell me - this stalling - is it worse on lpg?

    I had lpg - egr caused really crap light acceleration/stalling on lpg - but not so bad on petrol.

    Happening at the same time suggests a temperature related issue - dodgy temperature sensor perhaps.
    It is only when the last tree is felled, the last animal killed and the last fish hauled from the sea that we will realise we can't eat money.

  7. #7
    Status
    Offline
    nry's Avatar
    Cumbria RO | Club Team
    Join Date
    Mar 2008
    Posts
    25,986
    Mentioned in
    48 Post(s)
    Quoted
    1 Post(s)
    Actually EGR valve (assuming it has one) could well be a contender for the cause - at a guess it is probably closed during the first few minutes when the engine is cold but may well open (or try to) when the engine warms up, if it is sticking then the ECU is fuelling based on the EGR valve working - if it isn't then it may well cause problems like this on both fuels.

  8. #8
    Status
    Offline
    Thanassi's Avatar
    AOC Newbie
    Join Date
    Nov 2009
    Posts
    6
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    Well, good news is that the LPG specialist confirmed the fault is absolutely NOT caused by the LPG conversion ! That's a relief but I guess the problems start now, trying to figure out what the fault is!

    Tomorrow I'll call Vauxhall to try and arrange a warranty repair. Hope it will be straight forward now that it's been proved the LPG has nothing to do with it...

    I've also heard that EGR valve faults have caused very similar problems on Astras, all be it not this model.

    So far I think the top 3 contenders according to your advice are

    EGR valve
    Temperature sensor
    Air mask meter.

    I will make these suggestions when I talk to vauxhall about it.

    Any thoughts on the above or anything else that may be causing the problem?


    Thanks guys!

    PS Dealers gave me the car back with the plastic cover under the steering wheel hanging loose and the pressure in the front tire down to 22, even though they checked tire threads.

    Thanassi

  9. #9
    Status
    Offline
    Thanassi's Avatar
    AOC Newbie
    Join Date
    Nov 2009
    Posts
    6
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    Clanless, It happens just as bad on both. No difference at all. We've also tried disconnecting the fuse completely and still same prob.

    I'm now running it on petrol only for a few days to see if that makes any difference but after all the testing we've done (and putting it through the lpg computer) i doubt it will.

  10. #10
    Status
    Offline
    Thanassi's Avatar
    AOC Newbie
    Join Date
    Nov 2009
    Posts
    6
    Mentioned in
    0 Post(s)
    Quoted
    0 Post(s)
    Hi, just thought I'd give you an update on the fault.

    Dealer now says that the fault is with sticky valves in the cylinder. They say this is due to some additives that go in the LPG gas. They also say that it is the fault of the engine of the Astra that can't handle it. The LPG system works perfectly.

    Personally I'm not convinced it's down to sticky valves and am not sure how they proved it. Non the less they've fobbed me off to fix it myself.

    My mechanic is going to try and clean the valves with a solution.

    Does anyone know if this is possible, or maybe knows another way of doing it in case it doesn't work??


    Thanks in advance!

    Thanassi

Page 1 of 2 12 LastLast

Similar Threads

  1. Replies: 6
    Last Post: 03-07-2013, 13:17

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •