mitsbishi shogun problem

Post Reply
Message
Author
jamesybogar
New member
Posts: 5
Joined: Sat Mar 21, 2015 4:44 pm

mitsbishi shogun problem

#1 Post by jamesybogar » Tue Mar 24, 2015 7:19 pm

Hi All I have a problem with my system ( Romano )
it was working fine then when it switched over to gas it shut the whole car down (everything including the ignition and alarm system),
got it running again but only on petrol .
my problem is it will tick over on gas but not rev at a constant speed ,if I just floor it, It will rev then just die back.
Any suggestions would be appreciated as I think its the ECU.

LPGC
Installer
Posts: 3323
Joined: Wed Sep 29, 2010 6:01 pm
Location: Yorkshire
Contact:

Re: mitsbishi shogun problem

#2 Post by LPGC » Tue Mar 24, 2015 8:39 pm

What year Shogun is this? And do you know if you have a Romano sequential system or mixer system?

Simon
Full time LPG installer
Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
Mid Yorkshire
2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
Twitter https://twitter.com/AutogasSimon
07816237240

jamesybogar
New member
Posts: 5
Joined: Sat Mar 21, 2015 4:44 pm

Re: mitsbishi shogun problem

#3 Post by jamesybogar » Tue Mar 24, 2015 9:41 pm

its a 2002my with a mixer system ,everything was running fine until this happened.

Thanks for the reply .

LPGC
Installer
Posts: 3323
Joined: Wed Sep 29, 2010 6:01 pm
Location: Yorkshire
Contact:

Re: mitsbishi shogun problem

#4 Post by LPGC » Tue Mar 24, 2015 9:43 pm

How did you get it running on petrol again?

If it stalls on gas, does it then take more cranking to start than it would if you'd been running on petrol before turning the engine off?

Simon
Last edited by LPGC on Tue Mar 24, 2015 9:46 pm, edited 1 time in total.
Full time LPG installer
Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
Mid Yorkshire
2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
Twitter https://twitter.com/AutogasSimon
07816237240

jamesybogar
New member
Posts: 5
Joined: Sat Mar 21, 2015 4:44 pm

Re: mitsbishi shogun problem

#5 Post by jamesybogar » Tue Mar 24, 2015 9:44 pm

disconnected the battery and reset the alarm /immobiliser.

it starts just the same ,just wont hold a constant rev on gas but if you let it idle for 30 sec or so it will rev up then die down again.

LPGC
Installer
Posts: 3323
Joined: Wed Sep 29, 2010 6:01 pm
Location: Yorkshire
Contact:

Re: mitsbishi shogun problem

#6 Post by LPGC » Wed Mar 25, 2015 4:09 pm

3L, 3.5L, 3.8L ?

No more problems with it 'shutting the whole car down' since? This may or may not be related - If the mixer system gets it's power feed directly from the petrol injection system then a problem with, say, an LPG solenoid could cause the petrol system / immobiliser problems.

If it won't rev at idle and/or isn't able to run on LPG, one of the first things I would check would be the stepper motor that controls the mixture (if fitted). If one is fitted, it might be in the gas feed to the mixer from the reducer.

Pics of your install would help. There is a 'sticky' thread on how to get pics to appear in posts.

Simon
Full time LPG installer
Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
Mid Yorkshire
2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
Twitter https://twitter.com/AutogasSimon
07816237240

Gilbertd
Advanced Member
Posts: 8036
Joined: Wed Apr 09, 2008 10:00 am
Location: Peterborough

Re: mitsbishi shogun problem

#7 Post by Gilbertd » Wed Mar 25, 2015 7:13 pm

Or it's a dead lambda sensor so it will run on a fail safe petrol map but the mixture could be way out on gas.
'96 Saab 900XS, AEB Leo, sold
'93 Range Rover 4.2 LSE, Lovato LovEco, sold
'98 Ex-Police Range Rover 4.0, Singlepoint AEB Leo, my daily motor
'97 Range Rover 4.0SE, eGas multipoint, a project.....

Proud to be a member of the YCHJCYA2PDTHFH club.

LPGC
Installer
Posts: 3323
Joined: Wed Sep 29, 2010 6:01 pm
Location: Yorkshire
Contact:

Re: mitsbishi shogun problem

#8 Post by LPGC » Wed Mar 25, 2015 8:32 pm

Gilbertd wrote:Or it's a dead lambda sensor so it will run on a fail safe petrol map but the mixture could be way out on gas.
Thought of that and might be the case, but if this is a 3.5gdi the petrol injectors might be knack'd leading to bad lambda readings on petrol while knack'd stepper motor causes bad lambda on LPG...

Simon
Full time LPG installer
Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
Mid Yorkshire
2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
Twitter https://twitter.com/AutogasSimon
07816237240

jamesybogar
New member
Posts: 5
Joined: Sat Mar 21, 2015 4:44 pm

Re: mitsbishi shogun problem

#9 Post by jamesybogar » Mon May 11, 2015 4:51 pm

still no go

have replaced both the lambda sensor and the stepper motor and it is still the same.
was thinking it could be a relay or something .

thanks for all the advice so far..

Gilbertd
Advanced Member
Posts: 8036
Joined: Wed Apr 09, 2008 10:00 am
Location: Peterborough

Re: mitsbishi shogun problem

#10 Post by Gilbertd » Mon May 11, 2015 5:41 pm

Do you have the software and cable for the LPG system, otherwise you have no idea what it is doing. The Romano is a re-badged AEB Leonardo but needs the Romano branded software to match the firmware. I have a copy in case you can't find it elsewhere although if you buy a cable it should come with the software anyway.
'96 Saab 900XS, AEB Leo, sold
'93 Range Rover 4.2 LSE, Lovato LovEco, sold
'98 Ex-Police Range Rover 4.0, Singlepoint AEB Leo, my daily motor
'97 Range Rover 4.0SE, eGas multipoint, a project.....

Proud to be a member of the YCHJCYA2PDTHFH club.

Tubbs
Installer
Posts: 3733
Joined: Wed Jul 27, 2011 8:21 pm
Location: Midlands
Contact:

Re: mitsbishi shogun problem

#11 Post by Tubbs » Mon May 11, 2015 9:48 pm

It will have reset to default.
Single coil for cylinder. 0-1 lambda 0-5 tps etc.
you would need to plug it in to see what it's 'not' seeing. And reset the rpm feed until it's correct.

Gilbertd
Advanced Member
Posts: 8036
Joined: Wed Apr 09, 2008 10:00 am
Location: Peterborough

Re: mitsbishi shogun problem

#12 Post by Gilbertd » Tue May 12, 2015 8:21 am

I wondered how long it would be before our resident Shogun expert turned up, how's things Toby?
'96 Saab 900XS, AEB Leo, sold
'93 Range Rover 4.2 LSE, Lovato LovEco, sold
'98 Ex-Police Range Rover 4.0, Singlepoint AEB Leo, my daily motor
'97 Range Rover 4.0SE, eGas multipoint, a project.....

Proud to be a member of the YCHJCYA2PDTHFH club.

jamesybogar
New member
Posts: 5
Joined: Sat Mar 21, 2015 4:44 pm

Re: mitsbishi shogun problem

#13 Post by jamesybogar » Mon Jun 08, 2015 11:04 am

have now got the cable and drivers to hook up to the ecu .
had a look but don't have the map for the 3.0v6 shogun .

got the leonardo program to talk to the ecu but not the romano program.
but it seems that there is no program in the ecu

thanks for all the help so far....

LPGC
Installer
Posts: 3323
Joined: Wed Sep 29, 2010 6:01 pm
Location: Yorkshire
Contact:

Re: mitsbishi shogun problem

#14 Post by LPGC » Mon Jun 08, 2015 5:34 pm

You won't need a map...

Gilbert likes to answer this type of question ;)

Simon
Full time LPG installer
Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
Mid Yorkshire
2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
Twitter https://twitter.com/AutogasSimon
07816237240

Gilbertd
Advanced Member
Posts: 8036
Joined: Wed Apr 09, 2008 10:00 am
Location: Peterborough

Re: mitsbishi shogun problem

#15 Post by Gilbertd » Mon Jun 08, 2015 5:37 pm

Drop me a PM with an email address and I'll send you the Romano AEB175 software. It's identical in appearance to the Leonardo software but due to different firmware in the unit you have to use the correctly badged one.

and I have.....
'96 Saab 900XS, AEB Leo, sold
'93 Range Rover 4.2 LSE, Lovato LovEco, sold
'98 Ex-Police Range Rover 4.0, Singlepoint AEB Leo, my daily motor
'97 Range Rover 4.0SE, eGas multipoint, a project.....

Proud to be a member of the YCHJCYA2PDTHFH club.

LPGC
Installer
Posts: 3323
Joined: Wed Sep 29, 2010 6:01 pm
Location: Yorkshire
Contact:

Re: mitsbishi shogun problem

#16 Post by LPGC » Mon Jun 08, 2015 5:53 pm

That was quick Gilbert :lol:
Full time LPG installer
Servicing / Diagnostics / Repairs to all systems / DIY conversion kits supplied with thorough tech support
Mid Yorkshire
2 miles A1, 8 miles M62,
http://www.Lpgc.co.uk
Twitter https://twitter.com/AutogasSimon
07816237240

Gilbertd
Advanced Member
Posts: 8036
Joined: Wed Apr 09, 2008 10:00 am
Location: Peterborough

Re: mitsbishi shogun problem

#17 Post by Gilbertd » Mon Jun 08, 2015 9:23 pm

I was typing my reply when you posted, the "and I have" was added afterwards.....
'96 Saab 900XS, AEB Leo, sold
'93 Range Rover 4.2 LSE, Lovato LovEco, sold
'98 Ex-Police Range Rover 4.0, Singlepoint AEB Leo, my daily motor
'97 Range Rover 4.0SE, eGas multipoint, a project.....

Proud to be a member of the YCHJCYA2PDTHFH club.

Post Reply