8

800jimbo

New Member
This is more a Prins LPG question really - 2000/X P38 apparently had LPG service 8 months ago (I bought recently). Tickover on LPG is too low but fine on petrol.

Is petrol tickover a manual adjustment of the throttle cable or electronic set up?
Is LPG tickover electronically adjustable, or fixed by the manual adjustment (or indeed electronic adjustment) of the petrol tickover (if that makes sense)?

I'm wondering whether to adjust the cable or whether I have to pay someone to plug it in to their laptop.

Also, does it really have HT leads coming from a distributor? I'm contemplating replacing the leads if my eyes do not deceive me (I haven't had a car with HT leads for some time).

Thanks in advance (advice so far has been really useful and much appreciated).
 
As far as I know the Idle is controlled electronically by a 'stepper motor' (the Idle Control Valve or Idle Air Control Valve) RAVE will tell you!

As for the LPG system, not sure, more than likely it is all a relationship between throttle position sensor and MAF etc....maybe a quick visit to www.lpgforums.com could help on that one!

There is no dizzy on the later post 1995 V8's as the ignition system is all electronic....if you take a gander at the back of the engine you'll see the coil packs bolted to the back of the intake manifold....the bugger is they are a pain to get to....replacing leads maybe easy, but as for replacing the coils...hmmmm small hands and patience mostly!
 
You can adjust your tickover speed by increasing the LPG injector timings on the LPG ECU fuel map.

The LPG system probably needs a tweak, if it's okay on petrol, then you need to adjust your LPG system to match the petrol system.

You'll need a laptop and a cable to connect up, but it's pretty easy to do.
 
the problem l had was the fuel trims were way out so l purchased a cheap bluetooth obd adaptor eliminated all the faults it reset the fuel trims hey presto no probs
 
I've tried re-setting the faults already. Given the awful smell at tickover which accompanies drop in revs I suspect HT leads / plugs (hopefully not coil packs) causing a missfire / cyclinder or two down on tickover. Will update on receipt of receipt.
 
where are you based ??????? someone might be able to point you to a top lpg service agent ,,,, I suggest " from 6 yrs of owning a thor lpg rangie " that you don't feck about with it cos it will bite you in the ass and cost a fortune ,,, let pro look at it , it could just need the trims setting , cos if it aint broke don't fix it !!!!!!!! regards mozz ,,
 
prins is a barstard..they require domgle on laptop to work.(later ones).ie software is not cheap..unlike all the rest which is free.which is why i dont use prins..
 
l have lead and software for my kme system did a reset on it myself no probs good fuel consumption. going to change the lambda probes think one is iffy
 
mozz smith said:
where are you based ??????? someone might be able to point you to a top lpg service agent ,,,, I suggest " from 6 yrs of owning a thor lpg rangie " that you don't feck about with it cos it will bite you in the ass and cost a fortune ,,, let pro look at it , it could just need the trims setting , cos if it aint broke don't fix it !!!!!!!! regards mozz ,,
Click to expand...

It's going to New Farm Motors in Alresford on Tuesday - they're my local LPG garage
 
mozz smith said:
where are you based ??????? someone might be able to point you to a top lpg service agent ,,,, I suggest " from 6 yrs of owning a thor lpg rangie " that you don't feck about with it cos it will bite you in the ass and cost a fortune ,,, let pro look at it , it could just need the trims setting , cos if it aint broke don't fix it !!!!!!!! regards mozz ,,
Click to expand...
That's the way Mozz, let a so called professional bite you in the ass and empty your wallet, possibly without even fixing the problem, something you also have experience of:rolleyes:
Happy New Year to you and yours:D
 
the so called professional that fitted mine new as much about gas as l did about nuclear fusion but l know a lot more about gas now and didnt need to get my pants pockets emptied bit of research a laptop a cable and software at £20 couple of hours one saturday and bingo with the bluetooth obd and the gas software it nows goes like a missile and is excellent on gas
 
grumpy52 said:
the so called professional that fitted mine new as much about gas as l did about nuclear fusion but l know a lot more about gas now and didnt need to get my pants pockets emptied bit of research a laptop a cable and software at £20 couple of hours one saturday and bingo with the bluetooth obd and the gas software it nows goes like a missile and is excellent on gas
Click to expand...

You touting for work?:D:D
 
deffo not touting for work what l was trying to put across was. im a time served mechanic and was qualified to fit gas conversions about 15 years ago but having been out the trade for about 8 years gas has moved on so l let a so called expert who has been doing gas conversions for 20 years but made a right balls of mine so after taking it back and he came up with all sorts of excuses l thought l would do it my self and like my first post a bit of research time and a little money sorted it myself. but they do need to b kept on top of software now is easy tto get and have a auto matic set up put car details in or go on you tube and you can get all the info you need
 
grumpy52 said:
deffo not touting for work what l was trying to put across was. im a time served mechanic and was qualified to fit gas conversions about 15 years ago but having been out the trade for about 8 years gas has moved on so l let a so called expert who has been doing gas conversions for 20 years but made a right balls of mine so after taking it back and he came up with all sorts of excuses l thought l would do it my self and like my first post a bit of research time and a little money sorted it myself. but they do need to b kept on top of software now is easy tto get and have a auto matic set up put car details in or go on you tube and you can get all the info you need
Click to expand...

That's me told, I was only joking.:D:D
 
no tom cat wasnt being nasty no way its just these lpg men think they are gods gift but they are not. l would have to b desperate to let one touch mine again lve got it just right .no l think the man is waisting money l would see about getting a lead and software and within 5 minutes he will see the gas is not runnig as it should and l bet the fuel trims are still a back door out my bluetooth adaptor stays in and l check it once a week whilst her that must b obeyed is driving and we have no probs
 
grumpy52 said:
no tom cat wasnt being nasty no way its just these lpg men think they are gods gift but they are not. l would have to b desperate to let one touch mine again lve got it just right .no l think the man is waisting money l would see about getting a lead and software and within 5 minutes he will see the gas is not runnig as it should and l bet the fuel trims are still a back door out my bluetooth adaptor stays in and l check it once a week whilst her that must b obeyed is driving and we have no probs
Click to expand...

Good man, if I ever convert from diesel .......:)
 
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