fuel sending unit SD33
Posted: Fri Mar 21, 2008 8:02 am
need ohms on a 24v fuel sending unit in a Patrol.
can anybody help?
can anybody help?
Outer Limits 4x4 Board
Aussie Hardcore Wheelers
https://outerlimits4x4.com.au/
fuel sending unit SD33
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Posted: Fri Mar 21, 2008 8:48 am
MQ I guess as I think the later ones were 12 volt. I have a genuine manual, I will have a look at it for you. Back in a tick......
Posted: Fri Mar 21, 2008 9:11 am
OK, the book says, "fuel guage not working: replace sender unit, guage, check for open circuit or replace regulator built into temperature guage".
It also says the same for if the guage is stuck on full or not reading accurately.
It does not give a test procedure for any of it.
Looking at the wiring diagram the 61 series only has the fuel & temp guages going through the voltage regulator. For the 160 series (which I am assuming yours is if its the old green one I remember) the guage is hooked straight up to the sender with its own independant circuit. I would say ther is a resister built into the sender itself to remove oscillations in the fuel level & the guage remains constant.
In my MK the guage didnt work, I pulled it & the actual winding was visibly broken, also it was larger at the top & thinner at the bottom, which is how it controlled its resistance. Not sure what the 24V ones look like.
I dont have a scanner so I cannot send you a copy.
What sort of problems are you having RMP?
Are you trying to rebuild the unit or just diagnose it?
It also says the same for if the guage is stuck on full or not reading accurately.
It does not give a test procedure for any of it.
Looking at the wiring diagram the 61 series only has the fuel & temp guages going through the voltage regulator. For the 160 series (which I am assuming yours is if its the old green one I remember) the guage is hooked straight up to the sender with its own independant circuit. I would say ther is a resister built into the sender itself to remove oscillations in the fuel level & the guage remains constant.
In my MK the guage didnt work, I pulled it & the actual winding was visibly broken, also it was larger at the top & thinner at the bottom, which is how it controlled its resistance. Not sure what the 24V ones look like.
I dont have a scanner so I cannot send you a copy.
What sort of problems are you having RMP?
Are you trying to rebuild the unit or just diagnose it?
Posted: Fri Mar 21, 2008 9:35 am
I just found the facelift supplement for 1983 and it shows for the fuel guage on the deisel version it went back to using a resistor in the cluster for the temp and fule guages. I wouldnt be surprised if they used that setup right through & the first diagram doesnt show it or only shows one version.
As manufacturers change things all the time mid model (or they did then, my shorty 40 had 11 different rear wheel cylinders for its model year & spec) I would expect to see either. You will just have to suss it out I guess.
If you need any more info dont hesitate to ask.
As manufacturers change things all the time mid model (or they did then, my shorty 40 had 11 different rear wheel cylinders for its model year & spec) I would expect to see either. You will just have to suss it out I guess.
If you need any more info dont hesitate to ask.
Posted: Fri Mar 21, 2008 10:09 am
yep i have at least one here.
Swap ya for a 12volt one
Il be back on wednesday
Swap ya for a 12volt one
Il be back on wednesday
Posted: Fri Mar 21, 2008 9:10 pm
Wouldn't be any different to the 12 volt sender as the 24 volt patrol guages are 12 volt anyway. That is why they come on when the accessories is switched on.
Johno.
Johno.
Posted: Sat Mar 22, 2008 3:24 am
I am not trouble shooting the one in the truck now. But thanks for all the help with that. 
There is no sending unit in my truck currently so I am trying to get the ohms. Then buy one that will work and fit it to my truck.
There is no sending unit in my truck currently so I am trying to get the ohms. Then buy one that will work and fit it to my truck.
Posted: Sat Mar 22, 2008 6:17 am
You can still buy them from nissan, 150 aus when I had mine & that was not that long ago.
Posted: Sat Mar 22, 2008 8:19 am
can't buy it in the USA which is where I am at. Plus this is for fitting to a custom aluminum fuel cell.mkpatrol wrote:You can still buy them from nissan, 150 aus when I had mine & that was not that long ago.
Just want ohms of stock 24v sending unit.
Posted: Sat Mar 22, 2008 1:00 pm
RMP&O wrote:can't buy it in the USA which is where I am at. Plus this is for fitting to a custom aluminum fuel cell.mkpatrol wrote:You can still buy them from nissan, 150 aus when I had mine & that was not that long ago.
Just want ohms of stock 24v sending unit.
OK, now I am getting the picture. If you cannot get the ohms, can you check a few senders against the guage to see which one suits the most?
Alternatevely, there is a tool that checks resistence in guages, maybe one of those could be used to check your guage & then you will know that voltage range it needs & you may be able to calculate it from there.
I just thought of another thing, I have a genuine GQ manual, it has a check for the sender: Full - 4.3-5.7 ohms, Empty 74.3-84.8 ohms. This may help
fuel senders
Posted: Thu Jul 31, 2008 9:27 am
Hey mkpatrol,
Do you know if the GU 4.2 diesel sender unit would be the same.
Cheers Heath
Do you know if the GU 4.2 diesel sender unit would be the same.
Cheers Heath
Posted: Thu Jul 31, 2008 12:21 pm
Johno,elmo72j wrote:Wouldn't be any different to the 12 volt sender as the 24 volt patrol guages are 12 volt anyway. That is why they come on when the accessories is switched on.
Johno.
Are you saying that the accesories on the 24volt model are all 12 volt. I am currently building up a 24 volt model and was trying to work out how to run stereos, uhfs etc but this may help my dilemna. Can you confirm this?
Brad
Posted: Thu Jul 31, 2008 8:27 pm
I know that the cig lighter is 12volt pretty sure the rest of the dash is as well.
If you want to run stero, uhf, etc you could buy an inverter very easy to hook up (2 wires) and i don't think the are very dear to buy. that should fix your prob DUBBO MQ UTE.
If you want to run stero, uhf, etc you could buy an inverter very easy to hook up (2 wires) and i don't think the are very dear to buy. that should fix your prob DUBBO MQ UTE.
Posted: Thu Jul 31, 2008 9:05 pm
Brad,
The intrument panel is 12 volt the only guage that isnt is the volt guage. There should be a 12 volt feed that goes to where the sterio pod sits on the dash and there is a possibility that the cigarette lighter would be 12 volt although some say that theirs is 24 volt. A check with a multy meter would tell you. It shows the 12 volt feed and relay in the gregorys manual as a dotted line but keep in mind that this feeds off the drivers side battery and if feeding to much of it can cause a flat battery on that side. In saying this you would be able to get away with connecting to that battery but you will have to keep swapping the batteries around to keep them fully charged.
I am running a 24 and 12 volt alternator in my MQ at the moment. I have 2 EB Falcon batteries on the passengers side for the 24 volt and have retained the larger size on the drivers side just for 12 volt perposes feeding off a 12 volt alternator. Runs well and I get no flat batteries.
Johno.
The intrument panel is 12 volt the only guage that isnt is the volt guage. There should be a 12 volt feed that goes to where the sterio pod sits on the dash and there is a possibility that the cigarette lighter would be 12 volt although some say that theirs is 24 volt. A check with a multy meter would tell you. It shows the 12 volt feed and relay in the gregorys manual as a dotted line but keep in mind that this feeds off the drivers side battery and if feeding to much of it can cause a flat battery on that side. In saying this you would be able to get away with connecting to that battery but you will have to keep swapping the batteries around to keep them fully charged.
I am running a 24 and 12 volt alternator in my MQ at the moment. I have 2 EB Falcon batteries on the passengers side for the 24 volt and have retained the larger size on the drivers side just for 12 volt perposes feeding off a 12 volt alternator. Runs well and I get no flat batteries.
Johno.