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-   -   why is it that most fc "low fuel" light dont work??? (https://www.rx7club.com/2nd-generation-non-technical-pictures-198/why-most-fc-low-fuel-light-dont-work-887009/)

DC 91 fc3s 02-11-10 03:55 AM

why is it that most fc "low fuel" light dont work???
 
is it cause the bulb blew out or wiring problems??? :scratch:

DrKillJoY 02-11-10 07:56 AM

i have never seen a working one either.

Grip 02-11-10 08:26 AM

mine works.

Spirit-RE 02-11-10 08:32 AM

Mine worked, fuel gauge didn't though.

fonzi581 02-11-10 09:08 AM

My works just fine

Hypertek 02-11-10 09:39 AM

mine works.. perhaps you guys drive into the E too much that it jus burned out? lol

s2kguy17 02-11-10 10:32 AM

^ ha i was thinking the same thing, i dont think its to good for the engine to drive it on e too long might pick up particles from the bottom of the tank..

solareon 02-11-10 10:37 AM

My s4 is creepy. It like fades in and out when it comes on. Never seen it lit on the s5 though except for when you start the car.

magus2222 02-11-10 02:50 PM

mine didnt work, but the sender unit was bad and i was too cheap to replace it. it read low when it was half empty.........fucking thing

Lloyd

stevensimon 02-11-10 02:51 PM

its cause they burn out from being on all the time

DC 91 fc3s 02-11-10 03:04 PM


Originally Posted by solareon (Post 9797619)
. Never seen it lit on the s5 though except for when you start the car.

hmm thats right so it cant be a burned bulb then...




ive ran out of gas when i first bought my 7, thinking to myself, hey the light isnt on yet i can make it!! lol oh how wrong i was.... lesson learned, when its about to touch the bottom line, GET GAS!!!!! lol

HOZZMANRX7 02-11-10 03:04 PM

Its a talibon conspiracy. The moment you run out of gas you will be struck by a suicidal Honda.

But it's a flawed conspiracy since a Honda can't go fast enough to cause any significant damage.

Sidenote, low fuel sender failure seems to be more a problem with S5's than S4's.

Hecubus84 02-11-10 03:19 PM

If you connect the W/R wire on the sending unit harness to ground the low fuel idiot light should come on.

need RX7 02-11-10 03:24 PM

Mine comes on when the parking brake is pulled up :scratch:.

Battle Cat 02-11-10 04:06 PM

i owned 7 fcs and none of the lights worked for fuel hahahah

FelixIsGod29X 02-11-10 04:14 PM


Originally Posted by s2kguy17 (Post 9797614)
^ ha i was thinking the same thing, i dont think its to good for the engine to drive it on e too long might pick up particles from the bottom of the tank..

+1 And also the fuel pump is kept cool by fuel in the tank.

My low fuel light works surprisingly. I didn't notice it worked for a long time till one day i actually ran it low on fuel. I try and stay above a 1/4 tank.

AmviciousRav 02-11-10 11:52 PM

mine works too but I never see it go off (rarely below 1/3 of a tank)

DC 91 fc3s 02-12-10 12:01 AM

[QUOTE=FelixIsGod29X;9798448. I try and stay above a 1/4 tank.[/QUOTE]



+1 foreals man i get paranoid when it goes under haha

unren 02-12-10 02:46 AM

mine works most of the time. every now and then it wont come on and it will almost be touching the line. i think it has something to do with a loose connection between the idiot light cluster and its harness cause my clock will work for days till i hit a bump.

turboIIrotary 02-12-10 02:55 AM

mine is on all the time

DC 91 fc3s 02-12-10 05:49 AM

damn the s5 CLOCK!!!!!!! it works when it wants too!!!!

DJ_Merle 02-12-10 06:27 AM

I don't remember my first RX-7 (N/A) ever having the light working, but my new turbo definitely works:)

Schmitty 02-12-10 07:11 AM


Originally Posted by s2kguy17 (Post 9797614)
^ ha i was thinking the same thing, i dont think its to good for the engine to drive it on e too long might pick up particles from the bottom of the tank..


Sorry to Hyjack the thread but wouldn't this be an issue all the time? I'm under impression that the fuel pick up is at the bottom of the tank... so, wouldn't it be sucking fuel from the bottom of the tank (and thus the crap down there too) all the time? I would think the bigger issue is that running on low all the time would cause cooling issues with the pump not being immersed in fuel.

HOZZMANRX7 02-12-10 10:48 AM


Originally Posted by unren (Post 9799764)
mine works most of the time. every now and then it wont come on and it will almost be touching the line. i think it has something to do with a loose connection between the idiot light cluster and its harness cause my clock will work for days till i hit a bump.

Wrong. Two separate circuits.

Cold solder joints in the circuit board is the reason the clock does what it does. Common 2nd Gen issue, easy fix.

I'm under impression that the fuel pick up is at the bottom of the tank.

So where else would you put the fuel pick up? :lol:

Schmitty 02-12-10 12:19 PM


Originally Posted by HOZZMANRX7 (Post 9800181)
I'm under impression that the fuel pick up is at the bottom of the tank.

So where else would you put the fuel pick up? :lol:

:lol: I would put it at the bottom too but since I've never been in my 2nd Gen's fuel tank to tell you exactly where it is so I just posted it as an assumption. I'd hate to state that it is on the bottom and have you correct me because it's actually 0.453" off the bottom.

But back to the real question... The only reason I can think of that you would say it is more likely that you will pick up debris on a low tank because the debris to gas ratio is higer (more PPM debris per volume of fuel).

unren 02-13-10 06:42 AM


Originally Posted by HOZZMANRX7 (Post 9800181)
Wrong. Two separate circuits.

Cold solder joints in the circuit board is the reason the clock does what it does. Common 2nd Gen issue, easy fix.

I'm under impression that the fuel pick up is at the bottom of the tank.

So where else would you put the fuel pick up? :lol:

i appreciate the advice but - you dont think ive read the faq huh? i know about the cold solder joints. ive already taken it apart and repaired all the solder joints, and even tried swapping the idiot cluster out of my parts car. i know my own car, and when i hit bumps (or tap right above the idiot cluster) that happens. so if its not the idiot cluster, what else can it be? well lets see... the only plug on the back of it.

edit: sorry off topic.

VashDaStampede 02-16-10 08:30 PM


Originally Posted by Nismonic (Post 9799874)
Sorry to Hyjack the thread but wouldn't this be an issue all the time? I'm under impression that the fuel pick up is at the bottom of the tank... so, wouldn't it be sucking fuel from the bottom of the tank (and thus the crap down there too) all the time? I would think the bigger issue is that running on low all the time would cause cooling issues with the pump not being immersed in fuel.

i would think that this is the case as well. it wouldnt make sense to suck up the fuel from the top... but im not sure about this

edit: damnit already answered sorry guys

P_Lav 02-17-10 05:09 AM


Originally Posted by unren (Post 9802215)
i appreciate the advice but - you dont think ive read the faq huh? i know about the cold solder joints. ive already taken it apart and repaired all the solder joints, and even tried swapping the idiot cluster out of my parts car. i know my own car, and when i hit bumps (or tap right above the idiot cluster) that happens. so if its not the idiot cluster, what else can it be? well lets see... the only plug on the back of it.

edit: sorry off topic.

Bad ground somewhere?

RE Drifter 02-17-10 11:21 AM

Mine works, now some other lights may not lol

RockLobster 02-17-10 05:36 PM

On my 87 it worked intermittently. Then stopped working altogether.

On my 90 it worked fine.

On my two most recent cars (which i road race) i have no idea if they worked because i never run the tank below about 1/3rd or they fuel starve.

Brody8877 02-17-10 06:06 PM

mine works ¬_¬ but I rarely see it coming on, because I usually fill it up at half tank

DrKillJoY 02-17-10 09:11 PM

I usually fill up when I get to 333 miles a tank. :P

HOZZMANRX7 02-18-10 12:57 AM


Originally Posted by DrKillJoY (Post 9812350)
I usually fill up when I get to 333 miles a tank. :P


You have a 24 gallon tank?:scratch:

DrKillJoY 02-18-10 01:04 AM

LOL... lots of freeway miles under 3400 rpms.

mrquach 02-19-10 08:38 PM

mine works fine =p 333 per tank is goose!

DC 91 fc3s 02-20-10 12:13 AM

i wish mine can get atleast 250 per full tank.... but it wont with my rack on top =(

unren 02-20-10 11:12 AM


Originally Posted by P_Lav (Post 9810362)
Bad ground somewhere?

could be, thank you. Ill check it out sometime when its warm outside. the clock and gas light aren't really on top of my to do list, but ill do it when Im really bored one day.

87 t-66 02-20-10 04:43 PM

i never let mine get below 1/4 of a tank


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