Topic: Heaters and aircon keep tripping my lpg off (Read 5344 times)

Patriciajosephine · « **on:** 02 October 2016, 19:18:06 »

Hello
I am new to this forum. I have an omega that's lpg converted. However when I put my screen heaters or aircon on it trips my lpg off. I have to replace fuse and not use heaters . With winter approaching I am at a loss. Any suggestion please.

TheBoy · « **Reply #1 on:** 02 October 2016, 19:48:11 »

My immediate thought is the LPG plumbing isn't that good, and its causing the vap temp to drop too much.

Has it been like this since conversion?

zirk · « **Reply #2 on:** 02 October 2016, 19:51:23 »

Yep, Vap plumed in wrong or Vap position too high, or Air in the coolant system, could also be Vap has packed up, partially blocked, filters need changing etc.

Andy H · « **Reply #3 on:** 02 October 2016, 19:56:50 »

How or why would that blow a fuse?

tunnie · « **Reply #4 on:** 02 October 2016, 22:28:23 »

Insuffient flow causing VAP to run too cold and blow fuse $:-\$

Some details about your engine would help, is it a V6 or 4 cylinder?

Andy H · « **Reply #5 on:** 03 October 2016, 07:36:03 »

I still don't see how an iced up vaporiser could blow a fuse $:-\$

Sounds more like another 'professional' install where the elec feed to the LPG system has been stuffed into the back of the climate fuse.

How much current do the injectors draw?

TheBoy · « **Reply #6 on:** 03 October 2016, 08:24:35 »

I'd missed the fuse bit blowing

, what fuse do you have to replace?

Patriciajosephine · « **Reply #7 on:** 03 October 2016, 11:10:33 »

Hi again thanks for replies
It's a v6 and not sure if it's been like it since converted as bought car in June converted.
My hubby says to disconnect the eco system and it may prevent fuse going.
I love the omega but this problems a nuisance.
My hubby thinks when it was installed it was fused through the heating system.
But thought maybe had an easier solution.
Thanks again

zirk · « **Reply #8 on:** 03 October 2016, 11:37:52 »

Quote from: Andy H on 03 October 2016, 07:36:03

I still don't see how an iced up vaporiser could blow a fuse $:-\$

Sounds more like another 'professional' install where the elec feed to the LPG system has been stuffed into the back of the climate fuse.

How much current do the injectors draw?

Oh, crap, didn't see the fuse bit, just read the LPG tripping out and assumed it threw a wobbly and switched back to petrol.

Yea, the injectors are normally low Ohms, typically 2 to 8 ohms on the coils, so even with the switching circuits they will draw a bit.

Does kind of make sense what your saying, if theve botched the LPG through the Heater panel rather than fused directly to the battery, that could do it.

Doctor Gollum · « **Reply #9 on:** 03 October 2016, 14:37:24 »

That's a crappy install then

I mean why chase through the bulkhead to the cabin fuse box when there's a perfectly good battery in the engine bay

What lpg system is it?

Patriciajosephine · « **Reply #10 on:** 16 October 2016, 22:38:57 »

:yThanks all for your replies. We tried disconnecting economic but no joy
So sounds like your correct so off to a lpg expert now. Thanks again

Patriciajosephine · « **Reply #11 on:** 01 November 2016, 17:19:56 »

Hi again
Still can't find any solution to my aircon/heaters trippING out lpg but petrol working

The lpg is a Lovetto multi point system. We are booked in Friday for a lpg expert but he suggested on phone it's not the lpg and it it's electrical so I am at a loss any suggestions please $:-\$

Andy H · « **Reply #12 on:** 01 November 2016, 19:12:02 »

Quote from: Patriciajosephine on 01 November 2016, 17:19:56

Hi again
Still can't find any solution to my aircon/heaters trippING out lpg but petrol working

The lpg is a Lovetto multi point system. We are booked in Friday for a lpg expert but he suggested on phone it's not the lpg and it it's electrical so I am at a loss any suggestions please $:-\$

I think he is probably right - you don't really need an LPG specialist - you need someone who knows how to use a multimeter and read circuit diagrams.

With any luck there may be someone local to you who can have a look otherwise there is enough expertise amongst members of OOF to diagnose the problem remotely but you are going to have to answer the questions we ask.

Andy H · « **Reply #13 on:** 01 November 2016, 19:13:48 »

Quote from: TheBoy on 03 October 2016, 08:24:35

I'd missed the fuse bit blowing , what fuse do you have to replace?

This is the first question to answer to track the cause of the problem.

Patriciajosephine · « **Reply #14 on:** 01 November 2016, 19:48:59 »

Thanks again
The fuse we replace is the lpg system. strange but when we put on the heater or screen demister it trips out the lpg. The heaters etc work but the lpg doesn't so replace this fuse and back to where we started. 😕

Andy H · « **Reply #15 on:** 01 November 2016, 20:22:22 »

Where is this fuse?
- is it in the fusebox under the steering wheel?
- or in the relay box next to the battery?
- or in the plastic box on top of the battery?
- or somewhere else?

Patriciajosephine · « **Reply #16 on:** 05 November 2016, 11:26:42 »

Hi
The fuse is under steering wheel. But
Glad to say we fixed the heating and there is no tripping out of the lpg now. But 5 miles into journey leaving the ga rage we got a miss fire on lpg struggling up hills and on tick over but perfect on petrol. Any suggestions pleas.
It's an omega 2.6 v6 . Please

TheBoy · « **Reply #17 on:** 05 November 2016, 13:21:36 »

Quote from: Patriciajosephine on 05 November 2016, 11:26:42

Hi
The fuse is under steering wheel. But
Glad to say we fixed the heating and there is no tripping out of the lpg now. But 5 miles into journey leaving the ga rage we got a miss fire on lpg struggling up hills and on tick over but perfect on petrol. Any suggestions pleas.
It's an omega 2.6 v6 . Please

Which fuse under the steering wheel, they are all numbered.

I have a strange feeling the original install is a bit bodged

Patriciajosephine · « **Reply #18 on:** 05 November 2016, 14:54:56 »

Hi sorry for delay just return from lpg expert ??
Says I need new ecu and injected.
The fuse is no 17
Thanks

Patriciajosephine · « **Reply #19 on:** 05 November 2016, 15:38:36 »

It's so annoying I love the omega but as soon as you fix one thing there's another issue.
I not sure what they did to fix the heater tripping fuse 17 and gas system not working. They said something about one injector being an issue put all back together. All working gas heaters etc no fuses going.... then 5 miles into journey home and get miss fire lumpy on gas.
Get up this morning run fine no electric issues and gas kicks in and starts misfiring. So switched to petrol working good. Take it to an lpg expert who wants 450 pound to put new ecu and injectors because his system.can't read the computer in car. SO CONFUSING WHEN I HAVEN'T A CLUE WHAT'S GOING ON.sorry for ranting but I am little enoyed now going around in circles.
I appreciate any help. My Internet not good cuts in and out and I can't get alerts on here but will keep looking in for any replies. Thanks again $:-\$

Doctor Gollum · « **Reply #20 on:** 05 November 2016, 16:43:23 »

Sounds like the new lpg garage is talking some sense...

Basically it sounds like, as suspected, the original installation was royally screwed up. That figure suggests ripping out the current lpg ecu and wiring and replacing it with a system that this garage knows.

If you were to bring it here, or to any of the OOF mechanics, they would probably do the same and fit a Stag system... these are a proven, reliable lpg set up on the Omega, and what the bulk of those with lpg are running.

The plumbing side of the lpg is most likely ok, otherwise the bill would be alot nearer £1,500 $:-\$

Patriciajosephine · « **Reply #21 on:** 05 November 2016, 17:12:33 »

Thankyou so much for all advice. I feel reassured that it's the ecu now

Doctor Gollum · « **Reply #22 on:** 05 November 2016, 17:15:31 »

Quote from: Patriciajosephine on 05 November 2016, 17:12:33

Thankyou so much for all advice. I feel reassured that it's the ecu now

Not so much the ecu, but more the way it has been joined to the car wiring

Patriciajosephine · « **Reply #23 on:** 05 November 2016, 17:30:04 »

Thanks again just told hubby and he understands it now. Now me on the other hand soo confused lol. Give me a medical issue and I got a chance but machanic a definate no. Lol can't thank everyone enough.

TheBoy · « **Reply #24 on:** 06 November 2016, 10:56:03 »

My wiring diags show F17 as the horn, and nothing else.

When you say the climate goes off, is that the panel goes dead, or just no heat?

Andy H · « **Reply #25 on:** 06 November 2016, 13:49:44 »

Quote from: Patriciajosephine on 05 November 2016, 15:38:36

It's so annoying I love the omega but as soon as you fix one thing there's another issue.
I not sure what they did to fix the heater tripping fuse 17 and gas system not working. They said something about one injector being an issue put all back together. All working gas heaters etc no fuses going.... then 5 miles into journey home and get miss fire lumpy on gas.
Get up this morning run fine no electric issues and gas kicks in and starts misfiring. So switched to petrol working good. Take it to an lpg expert who wants 450 pound to put new ecu and injectors because his system.can't read the computer in car. SO CONFUSING WHEN I HAVEN'T A CLUE WHAT'S GOING ON.sorry for ranting but I am little enoyed now going around in circles.
I appreciate any help. My Internet not good cuts in and out and I can't get alerts on here but will keep looking in for any replies. Thanks again $:-\$

Did he say what make of ECU he proposes to fit? Is it the same make as the one already fitted?

It isn't clear to me whether he couldn't connect to your ECU due to a fault or because he doesn't posses the appropriate equipment.

Are you able to take a photograph of the ECU? or is there a manufacturers name on the petrol/LPG change over switch ?

Doctor Gollum · « **Reply #26 on:** 06 November 2016, 20:19:17 »

I read it as unfamiliarity with what was installed $:-\$ certainly be easier to remove a botched installation, repair damage and start afresh with a familiar system than spend similar time/money trying to rectify the botched installation in order to make it work...

But Andy is right, a picture or several would enable appropriate guidance on the most suitable approach

It could be as simple as the original installer taking the live feed from downstream ofa random fuse without thought rather than from the primary feed and fusing it independently. Which also makes you wonder where the ecu has ended up $:-\$

Patriciajosephine · « **Reply #27 on:** 06 November 2016, 20:57:46 »

Hi again
Thanks for replies hubby says the ecu is out of sight. And under all panels for window
The lpg fitter used a mirror to find it. He tried to connect with new softwear but still couldnt connect. Says never had an issue with omega lpg before. Believes the lpg system is loveto .
The fuse sorry was 4th in from drivers side top row no 29.
But this issue is now sorted just strange that only got misfire 5 miles into the fix. Only on lpg
Hubby asks if it could be plugs. Please so sorry for delay reply. Internet connection slow
So grateful.for advice.

Doctor Gollum · « **Reply #28 on:** 06 November 2016, 21:22:08 »

Lpg is more demanding on the plugs, and certainly, if you don't know when they were last changed then it certainly won't hurt...

Lovato... need a the details from the ecu, ie what model, to be able to try and gain information about it... do you know who fitted it?

Seen an ad for single day fitting from £645... which speaks volumes and might explain most of your problems $:-\$

Patriciajosephine · « **Reply #29 on:** 06 November 2016, 22:35:38 »

Thanks for reply again.
If hubby can get ecu details will let you know. No bought the car fitted. But appears that the fit was botched as suggested. So hubby going to change plugs if he can
He's always been great with cars. But the omega giving him few challenges lol. I will repost with ecu info when.possible. thanks again very much 🙄

Doctor Gollum · « **Reply #30 on:** 07 November 2016, 07:10:00 »

Have a read of the LPG fitting guides in the maintenance section... Will give you a better idea of how it should be done

biggriffin · « **Reply #31 on:** 07 November 2016, 19:34:34 »

Could the misfire be caused by using quads instead of twins.

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Author Topic: Heaters and aircon keep tripping my lpg off (Read 5344 times)