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Author Topic: Warning light on when I turn LPG off?? Oh no!  (Read 1742 times)

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devonkev

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Warning light on when I turn LPG off?? Oh no!
« on: 02 December 2009, 19:05:16 »
So people! Learnt a lot from this forum but can't find anything about this!

Recently she has been a bit lumpy starting in the morning and after work. When pulling away after starting she hesitates so much that you would think a stall is coming so instinctivly I was backing off the fuel. The other day I just thought I would keep my foot down to see what happens and after a couple of seconds of what felt like 5 horse power she would perk up back to normal.

I have been living with this for a while but now i have noticed when crusing ( so now running on LPG ) with only a tiny bit of pressure on accelerator she seems a tiny bit jolty ( sorry best word I could think of).

Then today it got worse. Now when on LPG there is a distinct hesitation evey 3-6 seconds that almost feels like a gear change that never quite happend ( its auto ! ). So i thought it was time for an lpg service and flicked the switch for petrol and on come the orange light with the engine looking thing on it. Its stayed on all day?

Help! I don't know what to do!
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tunnie

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #1 on: 02 December 2009, 19:10:19 »
Does it run fine on petrol? Also are you loosing any coolant?

Lastly what kind of LPG system is it, sequential or mixer?
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Entwood

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #2 on: 02 December 2009, 19:13:13 »
First thing I would check is the plugs/leads. LPG is slightly harder to ignite than petrol, it needs a "better" spark. If an engine is not running well, ignition wise, on petrol it will be a sod on LPG.

As to why the EML only lit up when you went to petrol .. dunno I'm afraid :(  have you tried papercliping it ??? It would appear that a very few 2.2's do paperclip .. you might just be lucky .. if not it needs a visit to someone with a code reader .... :(
« Last Edit: 02 December 2009, 19:13:42 by entwood »
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devonkev

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #3 on: 02 December 2009, 19:48:41 »
Quote
Does it run fine on petrol? Also are you loosing any coolant?

Lastly what kind of LPG system is it, sequential or mixer?

I wouldn't say it is running fine on petrol but it is ok. Seems to be a lack of power?

Its a sequential system.

Thanks for the quick reply!
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Lazydocker

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #4 on: 02 December 2009, 19:48:54 »
Quote
First thing I would check is the plugs/leads. LPG is slightly harder to ignite than petrol, it needs a "better" spark. If an engine is not running well, ignition wise, on petrol it will be a sod on LPG.

As to why the EML only lit up when you went to petrol .. dunno I'm afraid :(  have you tried papercliping it ??? It would appear that a very few 2.2's do paperclip .. you might just be lucky .. if not it needs a visit to someone with a code reader .... :(

Or even pedal trick ::) ::) ::)

Sounds to me like it's a missfire which has now gotten bad enough to throw up a fault code :-/ :-/
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tunnie

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #5 on: 02 December 2009, 19:51:45 »
you want to get it running right on petrol first, worth investing in a 'cheapo' tech2 from eBay, you need to get your codes read.  Which will help a lot....

How does it start on petrol from cold?
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devonkev

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #6 on: 02 December 2009, 19:52:14 »
Quote
First thing I would check is the plugs/leads. LPG is slightly harder to ignite than petrol, it needs a "better" spark. If an engine is not running well, ignition wise, on petrol it will be a sod on LPG.

As to why the EML only lit up when you went to petrol .. dunno I'm afraid :(  have you tried papercliping it ??? It would appear that a very few 2.2's do paperclip .. you might just be lucky .. if not it needs a visit to someone with a code reader .... :(

Thanks! I will check the leads tomorrow if I can. The lack of daylight outside working hours and no garage is a real pain in the .....

Paperclip I can do anytime so I will get on that asap.

My local vauxhall garage want £45 to read the codes! The swines.
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tunnie

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #7 on: 02 December 2009, 19:52:17 »
oh, and there is not a chance your 2.2 can be pedal tricked
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tunnie

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #8 on: 02 December 2009, 19:53:12 »
Quote
Quote
First thing I would check is the plugs/leads. LPG is slightly harder to ignite than petrol, it needs a "better" spark. If an engine is not running well, ignition wise, on petrol it will be a sod on LPG.

As to why the EML only lit up when you went to petrol .. dunno I'm afraid :(  have you tried papercliping it ??? It would appear that a very few 2.2's do paperclip .. you might just be lucky .. if not it needs a visit to someone with a code reader .... :(

Thanks! I will check the leads tomorrow if I can. The lack of daylight outside working hours and no garage is a real pain in the .....

Paperclip I can do anytime so I will get on that asap.

My local vauxhall garage want £45 to read the codes! The swines.

Sorry, slightly duff info there, you cannot paper clip a 2.2.

You can for £35 or so, get a 'cheapo' tech2 reader from eBay  :)
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Entwood

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #9 on: 02 December 2009, 20:00:13 »
Apologies ... I meant pedal trick .. I thought another thread said that some 2.2 ECU's were doable but not many ...

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devonkev

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #10 on: 02 December 2009, 20:08:55 »
Quote
Quote
First thing I would check is the plugs/leads. LPG is slightly harder to ignite than petrol, it needs a "better" spark. If an engine is not running well, ignition wise, on petrol it will be a sod on LPG.

As to why the EML only lit up when you went to petrol .. dunno I'm afraid :(  have you tried papercliping it ??? It would appear that a very few 2.2's do paperclip .. you might just be lucky .. if not it needs a visit to someone with a code reader .... :(

Or even pedal trick ::) ::) ::)

Sounds to me like it's a missfire which has now gotten bad enough to throw up a fault code :-/ :-/

I tried the pedal trick with no luck!! Thanks though.
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devonkev

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #11 on: 02 December 2009, 20:12:24 »
Quote
you want to get it running right on petrol first, worth investing in a 'cheapo' tech2 from eBay, you need to get your codes read.  Which will help a lot....

How does it start on petrol from cold?

Its starts first turn but then is a little lumpy/jumpy, then the feeling as if it might stall when you first pull away. This only last 30-40 seconds.
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devonkev

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #12 on: 02 December 2009, 20:22:38 »
would this do the job?
http://cgi.ebay.co.uk/VAUX-COM-Diagnostic-Tool-"My Naff Code Reader"-"My Naff Code Reader"-UK-SELLER_W0QQitemZ250539561347QQcmdZViewItemQQptZUK_Diagnostic_Tools_Equipment?hash=item3a55525183
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tunnie

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #13 on: 02 December 2009, 20:43:44 »
Quote
Apologies ... I meant pedal trick .. I thought another thread said that some 2.2 ECU's were doable but not many ...


I believe its the very, very early ones. Mines on a X and cannot be done, so think its only ones older than mine! (March 2000)
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mm290567

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Re: Warning light on when I turn LPG off?? Oh no!
« Reply #14 on: 02 December 2009, 21:07:06 »
we have the same prob with the limos....... you need to try better plugs....
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