Fuel gauge moves when accelerating

MyE92 · 11-05-2019, 12:10 PM

[deleted]

hybris · 11-05-2019, 12:20 PM

That doesn't seem right.

zeddladd · 11-05-2019, 12:24 PM

Not normal

B58togo · 11-05-2019, 12:37 PM

Does it have a JB4? Pretty sure you could set the fuel gauge as a boost gauge on it.

eksigned · 11-05-2019, 12:49 PM

lol tuned.

chenry · 11-05-2019, 02:25 PM

Quote:

Originally Posted by zeddladd

Not normal

this tuned or not

B58togo · 11-05-2019, 02:43 PM

Most people tuck the JB4 in by the brake master cylinder. There should be a black cover with three plastic 10mm, half turn bolts and a clip. It's the one on the driver side, right up close to the firewall.

eksigned · 11-05-2019, 05:36 PM

Quote:

Originally Posted by MyE92

Quote:

Originally Posted by eksigned

lol tuned.

How can I tell if there's a JB4 installed on it? That was my initial thought, but I can't believe someone would leave their tune on a car they were getting rid of.

JB4 has harnesses that snap into existing female ends in the front. It may be useful to dig up the JB4 Installation instructions for reference. Likely the unit is in the upper right (driver side) compartment next to the firewall. You can also check to see f there's something plugged into the OBD port on the drive side.

Let us know what you find!

Supr3me · 11-20-2019, 01:09 PM

Quote:

Originally Posted by MyE92

Thanks for the info! If there is a JB4 installed, how would I go about uninstalling it? Do I just follow the wires and unplug them? Sorry to be a noob, this is my first time with a possible JB. I used to have a Cobb which was a lot easier.

Why would you want to uninstall it?
Your other option to determine if you have an JB4 installed is to check your OBDII port under the dash and see if there is anything plugged into it. If there is, you'll likely know there is a JB4.
Next step is while the car is running, take the left steering column stalk and hold the button at the very end of it down and count to 3 slowly. The gauges on your dashboard should all switch position. You're now in manual control of the JB4 menu and can change settings from there. Look up the JB4 dash controls instructions online.

11-05-2019, 12:10 PM	#1
MyE92 El Presidente 278 Rep 6,962 Posts Drives: your mom wild. Join Date: May 2007 Location: NJ iTrader: (24)	Fuel gauge moves when accelerating [deleted] Last edited by MyE92; 05-18-2020 at 11:40 PM..
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11-05-2019, 12:20 PM	#2
hybris Lieutenant 205 Rep 500 Posts Drives: BMW 330e F30 M-sport Join Date: Oct 2008 Location: Norway iTrader: (0) Garage List 2016 BMW 330e F30 M ... [0.00]	That doesn't seem right. __________________ Thorbjorn 16 BMW F30 330e M-sport Bootmod3 Stage2 / BMS Intake / RM Motors high flow catted downpipe & custom exhaust / BBS CH 19" / H&R Sport springs
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11-05-2019, 12:24 PM	#3
zeddladd Private 26 Rep 54 Posts Drives: BMW 340 Xdrive Join Date: Jun 2019 Location: Philly iTrader: (0)	Not normal
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11-05-2019, 12:37 PM	#4
B58togo Major 809 Rep 1,369 Posts Drives: M240i Join Date: Feb 2017 Location: NY iTrader: (0)	Does it have a JB4? Pretty sure you could set the fuel gauge as a boost gauge on it. __________________ 2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ DAW Ultra Flow/ DS2/ Nostrum injectors/ E40 Doug Newton tuned/ ER DP/ Remus axle back/ BMS intake/ FTP CP/ M Perf LSD Last edited by B58togo; 11-05-2019 at 12:51 PM..
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11-05-2019, 12:49 PM	#5
eksigned Lieutenant 139 Rep 467 Posts Drives: 4er Join Date: Oct 2011 Location: WA iTrader: (0)	lol tuned.
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11-05-2019, 02:43 PM	#7
B58togo Major 809 Rep 1,369 Posts Drives: M240i Join Date: Feb 2017 Location: NY iTrader: (0)	Most people tuck the JB4 in by the brake master cylinder. There should be a black cover with three plastic 10mm, half turn bolts and a clip. It's the one on the driver side, right up close to the firewall. __________________ 2017 M240i/ ZF8 Pure Drivetrain Solutions Stage 1 & torque converter/xHP/ DAW Ultra Flow/ DS2/ Nostrum injectors/ E40 Doug Newton tuned/ ER DP/ Remus axle back/ BMS intake/ FTP CP/ M Perf LSD
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