Lpg T4 first problem

atnas666 · Mar 9th, 2012, 20:05

Hay guys encountered my first problem today.
the car
Driving on to the motorway (slip road) I booted it and i got a bleeping sound and it switched to petrol.

It wouldn't let me reselect gas till i turned the car off and back on..

Any ideas to why this happened?

will be taken in the garage next week (for its lpg check up after having it installed 900miles ago)

capt jack · Mar 9th, 2012, 21:26

Basically the engine wasn't getting enough gas for what you were asking it to do.

How much gas is in the tank?

This can happen to mine if I'm running low on gas - pushing on a bit and going uphill then it'll change over to petrol.

If you've only done 900 miles on LPG it's probably just due a tweak. There's a good reason why the installer will have asked you to go back after a week or two's use......

Cheers

Jack

atnas666 · Mar 9th, 2012, 21:29

defo had a lot of gas coz the slip road was from the service station (just filled it up)

Yeah he said bring it in after a 1000 miles/month

so u reckon a tune up?

classicswede · Mar 9th, 2012, 22:16

It will most likely be a pressure drop. Normaly you can just switch back over once teh pressure has settled again without switching off.

It can most likely be solved by adjusting the gas pressure and possibly adjusting the fuel map

atnas666 · Mar 9th, 2012, 22:40

ok thank you just want to make sure it was nothing really bad

atnas666 · Mar 10th, 2012, 20:07

Took it in today all adjusted and working fine for now

classicswede · Apr 17th, 2012, 11:48

Quote:

Originally Posted by atnas666

Me to. The T4 best car i have ever owned great fun to.... Got some lil niggles with the lpg conversion but noffin that aint slowly being sorted tho

What are the issues you are having?

atnas666 · Apr 17th, 2012, 15:23

stutters like a miss fire when booting it.. and sum times just at low revs.

Mid range is fine

classicswede · Apr 17th, 2012, 22:07

You have changed the plugs already?

I would do a compression test to make sure all is ok on that side of things before chasing down any other path.

What injectors did they fit in the end? i hope it was not the cheap valtek type 34 ones.

Asuming all the above is ok I would fit direction manifold jets to prevent any backflow. They do work better than conventional ones especialy turbo set ups.

Other than that it will be a case of sorting out the mapping.

atnas666 · Apr 17th, 2012, 22:21

Thank u i will get that checked.. am not sure what the injectors are. they have tried 4 different ones so far. Seems to make lil difference .. but will get a compression test done. do u have idea what the fingers should be?

Thanks 4 urn help

Mar 9th, 2012, 20:05	#1
atnas666 Proud T4 owner Last Online: May 5th, 2021 16:04 Join Date: Oct 2011 Location: guildford	Lpg T4 first problem Hay guys encountered my first problem today. the car Driving on to the motorway (slip road) I booted it and i got a bleeping sound and it switched to petrol. It wouldn't let me reselect gas till i turned the car off and back on.. Any ideas to why this happened? will be taken in the garage next week (for its lpg check up after having it installed 900miles ago) __________________ '99 S40 T4 (Running on LPG) '97 S40 2.0CD (Sold to Completefluke) Volvo FM12 420Bhp Draw-bar - Car Transporter

Mar 9th, 2012, 21:29	#3
atnas666 Proud T4 owner Last Online: May 5th, 2021 16:04 Join Date: Oct 2011 Location: guildford	defo had a lot of gas coz the slip road was from the service station (just filled it up) Yeah he said bring it in after a 1000 miles/month so u reckon a tune up? __________________ '99 S40 T4 (Running on LPG) '97 S40 2.0CD (Sold to Completefluke) Volvo FM12 420Bhp Draw-bar - Car Transporter

Mar 9th, 2012, 22:16	#4
classicswede Trader Volvo in my veins Last Online: Yesterday 23:53 Join Date: Dec 2004 Location: Anglesey	It will most likely be a pressure drop. Normaly you can just switch back over once teh pressure has settled again without switching off. It can most likely be solved by adjusting the gas pressure and possibly adjusting the fuel map __________________ http://www.classicswede.org www.classicswede.co.uk

Mar 9th, 2012, 22:40	#5
atnas666 Proud T4 owner Last Online: May 5th, 2021 16:04 Join Date: Oct 2011 Location: guildford	ok thank you just want to make sure it was nothing really bad __________________ '99 S40 T4 (Running on LPG) '97 S40 2.0CD (Sold to Completefluke) Volvo FM12 420Bhp Draw-bar - Car Transporter

Mar 10th, 2012, 20:07	#6
atnas666 Proud T4 owner Last Online: May 5th, 2021 16:04 Join Date: Oct 2011 Location: guildford	Took it in today all adjusted and working fine for now __________________ '99 S40 T4 (Running on LPG) '97 S40 2.0CD (Sold to Completefluke) Volvo FM12 420Bhp Draw-bar - Car Transporter

Mar 9th, 2012, 21:26	#2
capt jack VOC Member Last Online: Apr 20th, 2024 18:56 Join Date: Jun 2006 Location: Selby, North Yorkshire	Basically the engine wasn't getting enough gas for what you were asking it to do. How much gas is in the tank? This can happen to mine if I'm running low on gas - pushing on a bit and going uphill then it'll change over to petrol. If you've only done 900 miles on LPG it's probably just due a tweak. There's a good reason why the installer will have asked you to go back after a week or two's use...... Cheers Jack

Apr 17th, 2012, 15:23	#8
atnas666 Proud T4 owner Last Online: May 5th, 2021 16:04 Join Date: Oct 2011 Location: guildford	stutters like a miss fire when booting it.. and sum times just at low revs. Mid range is fine __________________ '99 S40 T4 (Running on LPG) '97 S40 2.0CD (Sold to Completefluke) Volvo FM12 420Bhp Draw-bar - Car Transporter

Apr 17th, 2012, 22:07	#9
classicswede Trader Volvo in my veins Last Online: Yesterday 23:53 Join Date: Dec 2004 Location: Anglesey	You have changed the plugs already? I would do a compression test to make sure all is ok on that side of things before chasing down any other path. What injectors did they fit in the end? i hope it was not the cheap valtek type 34 ones. Asuming all the above is ok I would fit direction manifold jets to prevent any backflow. They do work better than conventional ones especialy turbo set ups. Other than that it will be a case of sorting out the mapping. __________________ http://www.classicswede.org www.classicswede.co.uk

Apr 17th, 2012, 22:21	#10
atnas666 Proud T4 owner Last Online: May 5th, 2021 16:04 Join Date: Oct 2011 Location: guildford	Thank u i will get that checked.. am not sure what the injectors are. they have tried 4 different ones so far. Seems to make lil difference .. but will get a compression test done. do u have idea what the fingers should be? Thanks 4 urn help __________________ '99 S40 T4 (Running on LPG) '97 S40 2.0CD (Sold to Completefluke) Volvo FM12 420Bhp Draw-bar - Car Transporter

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)