Flashing LEDs on dash fuel level indicator - BRC system?

Post Reply
Message
Author
SteveMJ
New member
Posts: 43
Joined: Tue Apr 26, 2011 5:25 pm

Flashing LEDs on dash fuel level indicator - BRC system?

#1 Post by SteveMJ » Wed Jan 13, 2016 5:57 pm

On my BRC system I have found a couple of times recently, that after filling up that I have had all four green LEDs flashing on the LPG fuel level indicator on the dashboard.

The change over from petrol to gas is indicated to occur as normal and the four LEDs indicate the tank is full. When I stop the car and restart (usually after mile or so) the indicators go back to normal.

What is this telling me?

Thanks for the help, Steve
VXR8 Auto LS3 in Evoke (with LPG)

LPGC
Installer
Posts: 3324
Joined: Wed Sep 29, 2010 6:01 pm
Location: Yorkshire
Contact:

Re: Flashing LEDs on dash fuel level indicator - BRC system?

#2 Post by LPGC » Thu Jan 14, 2016 3:50 pm

Probably implies that the ECU is receiving an out of range tank level sender reading, e.g if ECU expects level sensor to send 1v minimum with full tank and 4v maximum with empty tank, but ECU reads 0.2v or 5v, then gauge might flash. Could be that gauge needs recalibrating in software, sender unit has an area of operation where it doesn't work properly (like a scratchy volume control on an old radio), bad earth to level sender (maybe earthed to same point as tank solenoid, which pulls voltage up due to tank solenoid electrical load).

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

SteveMJ
New member
Posts: 43
Joined: Tue Apr 26, 2011 5:25 pm

Re: Flashing LEDs on dash fuel level indicator - BRC system?

#3 Post by SteveMJ » Fri Jan 15, 2016 11:36 am

Thank you Simon,

Both those sound plausible, I had the two solenoids relaced before Christmas as they had failed due to corrosion. that may mean the earth could be bad and after 70,000 miles maybe the sender's resistance track is worn.

I will monitor the situation and then decide what to do.

Cheers, Steve
VXR8 Auto LS3 in Evoke (with LPG)

bmbratz
New member
Posts: 36
Joined: Sun May 01, 2011 12:42 pm

Re: Flashing LEDs on dash fuel level indicator - BRC system?

#4 Post by bmbratz » Thu Jan 28, 2016 7:33 pm

Normally comes on if tank overfills but does go away had it happen to me. :P

LPGC
Installer
Posts: 3324
Joined: Wed Sep 29, 2010 6:01 pm
Location: Yorkshire
Contact:

Re: Flashing LEDs on dash fuel level indicator - BRC system?

#5 Post by LPGC » Thu Jan 28, 2016 7:54 pm

If gauge generally works but flashes when full, chances are ECU gauge settings need adjustment..
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

Morat
New member
Posts: 174
Joined: Fri Jul 24, 2009 11:31 am

Re: Flashing LEDs on dash fuel level indicator - BRC system?

#6 Post by Morat » Tue Feb 02, 2016 11:26 pm

LPGC wrote:If gauge generally works but flashes when full, chances are ECU gauge settings need adjustment..
That's exactly how mine behaves. There are some pumps that give a bit more gas before shutoff and my BRC tends to flash at me for a few miles after I've used one of them.
It's not a problem that lasts long in a Jeep.

LairdScooby
Member
Posts: 322
Joined: Sun Aug 09, 2015 1:45 am

Re: Flashing LEDs on dash fuel level indicator - BRC system?

#7 Post by LairdScooby » Wed Feb 03, 2016 12:23 am

Morat wrote:
LPGC wrote:If gauge generally works but flashes when full, chances are ECU gauge settings need adjustment..
That's exactly how mine behaves. There are some pumps that give a bit more gas before shutoff and my BRC tends to flash at me for a few miles after I've used one of them.
It's not a problem that lasts long in a Jeep.

Not at 11mpg anyway...............

:lol: :lol: :lol: :lol: :lol:
Cheers,
Dave


Somewhere in Suffolk with a Jeep, 2 Rovers and a V6 Volvo

Image

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

Re: Flashing LEDs on dash fuel level indicator - BRC system?

#8 Post by Tubbs » Thu Feb 04, 2016 1:12 pm

:lol: :lol: :lol:

LPGC
Installer
Posts: 3324
Joined: Wed Sep 29, 2010 6:01 pm
Location: Yorkshire
Contact:

Re: Flashing LEDs on dash fuel level indicator - BRC system?

#9 Post by LPGC » Thu Feb 04, 2016 1:31 pm

Laughs must be contagious today, reverse situation is ticklish too: Lights on your gauge not going out fast enough you say... Soon sorted! Bring it in, we'll tune it so it uses fuel quicker :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

57jam89
Member
Posts: 466
Joined: Sun Jun 21, 2009 5:14 pm

Re: Flashing LEDs on dash fuel level indicator - BRC system?

#10 Post by 57jam89 » Thu May 12, 2016 7:13 am

I've had the same lights flashing on a brc system, it states in the brc manual it means tank is overfilled. Also says lights will return to normal within a few miles driving and it should not be of any concern.
Nissan Skyline 350gt Lpg fitted by Lpgc.

LPGC
Installer
Posts: 3324
Joined: Wed Sep 29, 2010 6:01 pm
Location: Yorkshire
Contact:

Re: Flashing LEDs on dash fuel level indicator - BRC system?

#11 Post by LPGC » Thu May 12, 2016 6:13 pm

Out of range includes overfilled readings but if the tank is not actually overfilling it will only be out of range because gauge ECU calibration is incorrect, a gauge wiring problem or defective gauge sender unit. Owner's manual will state 'overfilled' as it will presume the installer followed installer manual on choosing correct sender, wired it in properly calibrated it properly and sender unit is working properly.

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

Post Reply