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106

Omega General Help / Re: Fuel Trim Malfunction

« on: 04 October 2008, 12:02:33 »

Manifold was not drilled so injector wiring was not disturbed!
Plenum was removed and drilled and straws attached which reach down onto top of valves. Injector blocks were mounted ontop of plenum thus enabling plugs to be changed without moving all of the LPG stuff out of the way.

AFAIK the only wiring change was to intercept the 12V feed to the injector rails and run it via the LPG ECU so that when running on petrol the 12V feed goes straight through and the petrol injectors are controlled as normal by the main ECU. When running on LPG the power to the petrol injectors is cut off and diverted to the LPG injectors via the LPG ECU, the timing of these being controlled (I think!!) still by the main ECU with the LPG ECU being able to modify as required these timings. At least I think thats the way this Zavoli setup works but stand to be corrected by Kevin or another of the LPG experts on the forum. AEB software is used to calibrate the LPG ECU.

Can't look at throttle body for idling prob today as SWMBO has other ideas in how I should spend my time this weekend!! Will look at next week.

107

Omega General Help / Re: Fuel Trim Malfunction

« on: 03 October 2008, 20:16:39 »

All codes have been cleared and will now see if they come back whilst running on LPG.
Petrol Injector wiring was not touched AFAIK. Installer mounted LPG injectors ontop of plenum and drilled and tapped the plenum with the LPG feeds which then have straws which feed down to ontop of the valves. AFAIK the only wiring altered was to intercept the feed to the petrol injectors so that it goes via the LPG ECU. The engine ECU then feeds its signals via the LPG ECU which when running on petrol just passes the injector signals through itself, and when running on LPG diverts the engine ECU signals to the LPG injectors. Does this sound right?
Will take a look at cleaning the throttle body tomorrow and will check for free movement.

108

Omega General Help / Re: Fuel Trim Malfunction

« on: 03 October 2008, 15:26:16 »

Kev/Mark - as suggested have driven exclusively on petrol since last post and EML has gone but fault codes still there (0170,0173,0443). The idling problem was still there on petrol though, not as I said before only on LPG. Today the LPG installer and I have replaced plenum O rings just in case these were leaking (original 0443 was caused by top hat O ring on breather box which was changed about 3 weeks ago), cleared codes and recalibrated for the LPG setup all OK. However idling prob in neutral still remains both on petrol and LPG. The best way I can describe it is like an internmittent sticking mechanical throttle but with the additional "benefit" of hunting between about 1000 - 2000 rpm when it happens. Seems to be slightly worse on LPG than petrol and only happens when engine is hot. When fans cut in idling sometimes seems to return to normal 750?
As I know nothing about these drive by wire throttles is there anything obvious that I can check. I have already looked at the plugs and vacuum connexions around the throttle body and assume that the control is the unit on the drivers side of the throttle body at the front of the plenum.
Any advice would be most welcome before a trip to Hants is deemed necessary Kev.

109

Omega General Help / Re: Fuel Trim Malfunction

« on: 17 September 2008, 16:49:11 »

Thanks for that and the offer Kevin.
The guy who installed it is quite willing to have it back and look at it and has been very helpful but he is away until beginning of October and I was trying to see if I could get to the bottom of this before then.
I will do as you say and run on petrol for a "while" and see what happens to the EML. Am I right in saying that I thought you may be able to clear codes by leaving battery disconnected for 24hrs or so? Installer does have a code reader but did have trouble clearing these codes before.
I may like to take you up on your offer to take a look at this if the installer cannot come up with an answer!!

110

Omega General Help / Re: Fuel Trim Malfunction

« on: 17 September 2008, 16:24:25 »

Thanks for info on this and prompt replies!
The idling seems OK on petrol. Don't know whether the EML will be generated on petrol as I don't know how to clear the codes and then run on petrol to check. Can this be done without a Tech 2 session?

111

Omega General Help / Fuel Trim Malfunction

« on: 17 September 2008, 16:01:18 »

Since having my Elite converted to LPG (Zavoli System) I have a couple of probs that I hope you meega experts might be able to help with.
The first is an EML generated by Fuel Trim Malfunction codes (0170 and 0173). There was originally an air leak on the plenum breather bridge O ring that's been fixed, codes cleared (inc 0170 & 0173) but some 150 miles later the EML light is back. What is a "Fuel Trim Malfunction" and what could cause it.
The second prob which may be related is the idling speed which intermittently seems to hunt when in neutral between 750 -1500 when the engine is hot. I don't think I have any more air leaks but is it possible that could be the cause? (O ring seal on plenum?)
I would like to check and clean the ICV if my 3.2 has one but don't know where it is on this engine or what to clean it with.
Any help greatly appreciated

112

Omega General Help / Exhaust emissions light - Help

« on: 29 August 2008, 17:51:57 »

Grateful for any advice on the following:-
Just had meega converted to LPG (Zavoli System) (16/08/08). Travelled up to Leeds to see daughter from Hastings (276 miles) on LPG with no issues last Tuesday. Today EML light has come on and tech 2 reveals:-

P0173 - Fuel Trim Malfunction bank 2
P0443 - Vap system leak
P0173 - Fuel Trim Malfunction bank 1
P0308 - Cylinder 3 Misfire
P0306 - Cylinder 6 Misfire
P0700 - Random Misfire

All this seems to indicate air leak and stealers say you can hear leak from back of engine (can't say I can). Apart from a slightly rougher than usual idle when I first noticed the EML, car seems to be running OK whether on LPG or petrol.
2 Questions - Is car OK to drive back 280 miles to Hastings like this so that I can go back to LPG installer and second any tips as to where I can look at back of block when the engine has cooled down!!!
When leak cured will EML light reset without further tech 2?
Only in Leeds till Sunday so would appreciate any quick responses that you guys can give me

113

Omega General Help / LPG Conversion

« on: 10 July 2008, 13:23:02 »

Just about to have my 3.2 Elite converted to LPG using the OMVL Dream 21N system. This is going to be done by a qualified installer in Kent. Having read in other posts that the meega is a pig to convert compared to some other vehicles, has anyone on the forum had theirs converted using the OMVL system? If so what's their experience of it?

114

Omega General Help / Firmware Updates

« on: 09 June 2008, 16:10:10 »

As a newcomer to the forum I wasn't aware until reading various posts that the firmware in my meegas autobox, climate control etc could be upgraded to latest versions. I assume that this has to be done through Tech 2. As I have had my 3.2 elite since new in 2001 there are probably quite a few updates that could be beneficial.
I am also asuming that the Vauxhall stealers do not do this as part of their yearly service schedules without charging for a Tech 2 session in addition to the service? Does anyone know if they would just charge for one session to update all firmware?
Unfortunately there is noone near here that has the necessary to do a Tech 2 session so I am limited to going to the stealers!!

115

Omega General Help / Automotive Remanufacturer - BBA-Reman

« on: 09 May 2008, 19:07:46 »

Having recently had a problem with my meega CID I came across a automotive remanufacturer in Rochester Kent who repaired it for me at a very reasonable cost and were also very helpful.
They also remanufacture ABS Sensors, Dash Panels, Throttle Bodies, Fuel Pumps, Electric Power Steering etc etc etc. Their website is well worth a look at:-

http://www.bba-reman.com/

They do have Omega items as well as other VX models (Corsa, Vectra etc)
If you ring them let the phone ring as they get very busy and only have 10 I/C lines.

116

Omega General Help / Re: Door Checkstrap Plate

« on: 01 May 2008, 18:59:37 »

Had this problem with my meega too!! (advisory on MOT last year). Went to my friendly main dealers body shop who welded around plate after taking door off - for free!!!!!!!  I gave the guy who did it £20 for a drink!!! Might be worth a try at your dealers as this is a common problem!!

117

Newbie Welcome Area / Re: newbie from durham city

« on: 23 November 2010, 15:48:56 »

Hi Gary and welcome

118

Newbie Welcome Area / Re: looking to join the omega people!

« on: 26 November 2010, 20:21:22 »

Hi and welcome to OOF

119

Newbie Welcome Area / Re: Another for the ranks

« on: 24 November 2010, 12:35:39 »

Hi D :yave and welcome to OOF

120

Newbie Welcome Area / Re: Newbie!

« on: 23 November 2010, 18:37:54 »

Hi and welcome to OOF