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 Gas/fuel meter doesn't work 
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Post Gas/fuel meter doesn't work
Why would a gas meter not work anymore ?

The light when I'm low on fuel still works. But the meter always indicates full (i wish it was !!)

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February 09 2012, 3:57 AM
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Post Re: Gas/fuel meter doesn't work
I have a semi related question here.....

Ummm..... do all MX3s have fuel lights that come one when gas is low? I ask because mine has never gone off before....

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February 09 2012, 4:11 AM
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Post Re: Gas/fuel meter doesn't work
You sure it's the gauge and not the sending unit in the tank? I've never replaced the gauge, but I've had to replace the sending unit before, maybe even twice, but the low fuel light is independant from the gauge needle, that seems to be a different sensor.

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1992 Mazda Mx-3 GSR - 2.5L KLZE : Award Winning Show Car & Race Car ['02-'09] (Retired)
2004 Mazda RX-8 GT - Renesis Wankel : LS3 Coils, BHR Mid-Pipe + Falken RT-615K 245/40r18
2011 Mazda Mazda2 GS - 1.5L Manual : Yozora Edition (1 of 500)
2003 Nissan Xterra SE - 4x4 Supercharged : 2" Body Lift, 4" Suspension Lift & 33" MTR Kevlar
2001 Nissan Frontier SE - The Frontrailer : Expedition/Off-Road Trailer Project


February 09 2012, 4:29 AM
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Post Re: Gas/fuel meter doesn't work
I'd test the sending unit first as well, I've had several fail in other cars.

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'12 Challenger R/T Plus w/ STP - Brilliant Black - 3.92 w/ Limited Slip, Shorty headers, SkipShift delete, Clutch Delay Valve delete, Hurst STS, RAM Clutch Adjuster, Boss 338s/Sticky Nittos, Tuned

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February 09 2012, 4:51 AM
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Post Re: Gas/fuel meter doesn't work
So where could i find the sending unit ? How does it look like?

I've replaced the stock pomp with the walbro, perhaps I messed up the sending unit ?

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February 09 2012, 8:09 AM
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Post Re: Gas/fuel meter doesn't work
Did this happen when you were modifying your gauge cluster?

The fuel pump attaches to the sending unit, I haven't personally had a reason to take mine out yet, but I would assume that it is under the rear seat with the pump. :D

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'12 Challenger R/T Plus w/ STP - Brilliant Black - 3.92 w/ Limited Slip, Shorty headers, SkipShift delete, Clutch Delay Valve delete, Hurst STS, RAM Clutch Adjuster, Boss 338s/Sticky Nittos, Tuned

92 G4S 5 spd - KL, MegaSquirt, Coilpacks, Gone: VAF/Power Steering/Air Conditioning/EGR/ABS/Auto Seatbelts/etc, 5 lugs, Speed6 brakes, FD wheels, wiretuck, progressive rate coilovers w/ tender springs, modified shorty headers w/ custom collector, AEM WB, 2.5" straight


February 09 2012, 1:10 PM
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Post Re: Gas/fuel meter doesn't work
Uhh.... it happend some years ago.. can't really remember when.

I just went to a gasstation when the light came on.

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February 10 2012, 3:51 AM
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Post Re: Gas/fuel meter doesn't work
Hmm, well that's still not too bad... when my light is steady on I have almost exactly 3.2 Gallons left!

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'12 Challenger R/T Plus w/ STP - Brilliant Black - 3.92 w/ Limited Slip, Shorty headers, SkipShift delete, Clutch Delay Valve delete, Hurst STS, RAM Clutch Adjuster, Boss 338s/Sticky Nittos, Tuned

92 G4S 5 spd - KL, MegaSquirt, Coilpacks, Gone: VAF/Power Steering/Air Conditioning/EGR/ABS/Auto Seatbelts/etc, 5 lugs, Speed6 brakes, FD wheels, wiretuck, progressive rate coilovers w/ tender springs, modified shorty headers w/ custom collector, AEM WB, 2.5" straight


February 10 2012, 6:40 AM
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Post Re: Gas/fuel meter doesn't work
The sending unit is in the gas tank, accessible under the rear seat. It looks like this:

Image

That's for a 323, but nearly identical. That black square box is your floater.

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1992 Mazda Mx-3 GSR - 2.5L KLZE : Award Winning Show Car & Race Car ['02-'09] (Retired)
2004 Mazda RX-8 GT - Renesis Wankel : LS3 Coils, BHR Mid-Pipe + Falken RT-615K 245/40r18
2011 Mazda Mazda2 GS - 1.5L Manual : Yozora Edition (1 of 500)
2003 Nissan Xterra SE - 4x4 Supercharged : 2" Body Lift, 4" Suspension Lift & 33" MTR Kevlar
2001 Nissan Frontier SE - The Frontrailer : Expedition/Off-Road Trailer Project


February 10 2012, 11:56 AM
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Post Re: Gas/fuel meter doesn't work
you can test the sender by putting a volt meter onto the 2 leads (screws) that the gauge needle uses for signal. with the pump assembly removed from the car have someone move the sending arm up and down while its attached to the harness and the ignition on(car off). voltage ouput between the leads should move up and down with the lever, if not replace the sender, if it does replace the gauge...


March 07 2012, 11:58 PM
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Post Re: Gas/fuel meter doesn't work
Thanks, for the tip

I've replaced both :)

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March 08 2012, 6:22 AM
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Post Re: Gas/fuel meter doesn't work
Nd4SpdSe wrote:
The sending unit is in the gas tank, accessible under the rear seat. It looks like this:

Image

That's for a 323, but nearly identical. That black square box is your floater.


Super old topic bump.
Where did you find this sending unit? Did you get it via Ali Express? searching on what key words?

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February 25 2018, 6:13 PM
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Post Re: Gas/fuel meter doesn't work
I got mine from Mazda directly....but we're going back many, many years.

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1992 Mazda Mx-3 GSR - 2.5L KLZE : Award Winning Show Car & Race Car ['02-'09] (Retired)
2004 Mazda RX-8 GT - Renesis Wankel : LS3 Coils, BHR Mid-Pipe + Falken RT-615K 245/40r18
2011 Mazda Mazda2 GS - 1.5L Manual : Yozora Edition (1 of 500)
2003 Nissan Xterra SE - 4x4 Supercharged : 2" Body Lift, 4" Suspension Lift & 33" MTR Kevlar
2001 Nissan Frontier SE - The Frontrailer : Expedition/Off-Road Trailer Project


March 15 2018, 2:46 PM
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Post Re: Gas/fuel meter doesn't work
https://www.ebay.ca/itm/Mazda-Mx-3-Mx-3 ... rm&vxp=mtr

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1992 Mazda Mx-3 GSR - 2.5L KLZE : Award Winning Show Car & Race Car ['02-'09] (Retired)
2004 Mazda RX-8 GT - Renesis Wankel : LS3 Coils, BHR Mid-Pipe + Falken RT-615K 245/40r18
2011 Mazda Mazda2 GS - 1.5L Manual : Yozora Edition (1 of 500)
2003 Nissan Xterra SE - 4x4 Supercharged : 2" Body Lift, 4" Suspension Lift & 33" MTR Kevlar
2001 Nissan Frontier SE - The Frontrailer : Expedition/Off-Road Trailer Project


March 15 2018, 2:49 PM
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