help with gas gauge have standalone - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

nightshiftgarage · 08-03-2007, 01:12 PM

just notcied that my gas gauge isnt working anymore, thanks to wonderful megasquirt. anyone know how to or have any ideas on how to wire it up on its own without the factory ecu. thanks

Matt Cramer · 08-06-2007, 07:05 AM

Post what year you've got, and whether you have a HUD if it's an S13. I'll check the wiring diagrams. On most years, the stock ECU isn't connected to the fuel gauge at all. Do all your other gauges work?

MegasquirtCA · 08-08-2007, 05:59 PM

Like Matt said, all the stuff on the cluster except Tach are seperate from the ECU. So megasquirt wasnt the cause it was either it failed or YOU.

It doesnt matter if its analog or HUD I've used both and they all worked fine.

sean350z · 08-08-2007, 08:42 PM

Megasquirt will not cause your gas guage to break...

Sounds like a wiring issue seperate from the ECU or your sender is busted.

nightshiftgarage · 08-17-2007, 06:00 AM

matt. its a 97 .

other dudes, i didnt think ms broke my gauge

my car had some weird electrical meltdown, thats when i decided to do ms.now i cant get the ms to communicate with the laptop. im using a usb cable to comm port.it just seems like its been one thing after another.getting a lil frustrated.

the head · 08-17-2007, 07:31 AM

Quote:

Originally Posted by nightshiftgarage

matt. its a 97 .

other dudes, i didnt think ms broke my gauge

my car had some weird electrical meltdown, thats when i decided to do ms.now i cant get the ms to communicate with the laptop. im using a usb cable to comm port.it just seems like its been one thing after another.getting a lil frustrated.

try assignng a specific com port to the USB in your computer settings I had that issue with my Haltech initially because the USB was COM 27 on my system and the Haltech can only support single digit COM assignments.

nightshiftgarage · 08-18-2007, 04:46 PM

i didnt know the cable cane with a cd to load. after that its been good. still have no tach signal and or spark tho.

Matt Cramer · 08-20-2007, 08:10 AM

On this model, the fuel gauge just wires straight to the sending unit. Check to see if you're getting a voltage at the sending unit from the gauge.

You won't get a spark until the Megasquirt gets an RPM signal. Does the Megasquirt work on a Stim?

nightshiftgarage · 08-31-2007, 02:27 PM

if thats something extra, mine didnt come with that

Matt Cramer · 09-04-2007, 12:48 PM

Quote:

Originally Posted by nightshiftgarage

if thats something extra, mine didnt come with that

It's an extra diagnostic board. Without it, the first thing to check is if it's getting a signal in at pin 24 that is going from 0 to 12 volts and back again as the distributor turns.

08-03-2007, 01:12 PM	#1
nightshiftgarage Zilvia Member Join Date: Sep 2006 Location: tn Age: 41 Posts: 170 Trader Rating: (0) Feedback Score: 0 reviews	help with gas gauge have standalone just notcied that my gas gauge isnt working anymore, thanks to wonderful megasquirt. anyone know how to or have any ideas on how to wire it up on its own without the factory ecu. thanks

08-06-2007, 07:05 AM	#2
Matt Cramer Join Date: Oct 2006 Location: Covington, GA Age: 47 Posts: 37 Trader Rating: (0) Feedback Score: 0 reviews	Post what year you've got, and whether you have a HUD if it's an S13. I'll check the wiring diagrams. On most years, the stock ECU isn't connected to the fuel gauge at all. Do all your other gauges work? __________________ Matt at DIY Autotune http://www.diyautotune.com

08-08-2007, 08:42 PM	#4
sean350z Zilvia Addict Join Date: Nov 2005 Location: Downingtown, PA Posts: 890 Trader Rating: (5) Rides Gallery: sean350z Feedback Score: 5 reviews	Megasquirt will not cause your gas guage to break... Sounds like a wiring issue seperate from the ECU or your sender is busted. __________________

08-20-2007, 08:10 AM	#8
Matt Cramer Join Date: Oct 2006 Location: Covington, GA Age: 47 Posts: 37 Trader Rating: (0) Feedback Score: 0 reviews	On this model, the fuel gauge just wires straight to the sending unit. Check to see if you're getting a voltage at the sending unit from the gauge. You won't get a spark until the Megasquirt gets an RPM signal. Does the Megasquirt work on a Stim? __________________ Matt at DIY Autotune http://www.diyautotune.com

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08-08-2007, 05:59 PM	#3
MegasquirtCA Zilvia Addict Join Date: May 2006 Location: South Florida Posts: 610 Trader Rating: (3) Feedback Score: 3 reviews	Like Matt said, all the stuff on the cluster except Tach are seperate from the ECU. So megasquirt wasnt the cause it was either it failed or YOU. It doesnt matter if its analog or HUD I've used both and they all worked fine.

08-17-2007, 06:00 AM	#5
nightshiftgarage Zilvia Member Join Date: Sep 2006 Location: tn Age: 41 Posts: 170 Trader Rating: (0) Feedback Score: 0 reviews	matt. its a 97 . other dudes, i didnt think ms broke my gauge my car had some weird electrical meltdown, thats when i decided to do ms.now i cant get the ms to communicate with the laptop. im using a usb cable to comm port.it just seems like its been one thing after another.getting a lil frustrated.

08-18-2007, 04:46 PM	#7
nightshiftgarage Zilvia Member Join Date: Sep 2006 Location: tn Age: 41 Posts: 170 Trader Rating: (0) Feedback Score: 0 reviews	i didnt know the cable cane with a cd to load. after that its been good. still have no tach signal and or spark tho.

08-31-2007, 02:27 PM	#9
nightshiftgarage Zilvia Member Join Date: Sep 2006 Location: tn Age: 41 Posts: 170 Trader Rating: (0) Feedback Score: 0 reviews	if thats something extra, mine didnt come with that