1995 LS400 fuel gauge pegged to full
11-11-09, 09:08 PM
#2
Well, here's what I found out:
With the sender disconnected, and the gauge switched off and on, the low fuel light comes on.
With the sender's outermost wires shorted out, the instrument cluster shuts down and turns back on. Whoops. That must be the shorting out that I feared.
With the sender's bottom and middle wire shorted, no difference in the needle.
I believe the problem does lie with the cluster. That sucks. Any ideas on what to do?
1) Get the cluster repaired?
2) Repair the cluster myself?
3) Get a junkyard cluster and forget the mileage difference?
With the sender disconnected, and the gauge switched off and on, the low fuel light comes on.
With the sender's outermost wires shorted out, the instrument cluster shuts down and turns back on. Whoops. That must be the shorting out that I feared.
With the sender's bottom and middle wire shorted, no difference in the needle.
I believe the problem does lie with the cluster. That sucks. Any ideas on what to do?
1) Get the cluster repaired?
2) Repair the cluster myself?
3) Get a junkyard cluster and forget the mileage difference?
11-11-09, 10:05 PM
#3
Driver School Candidate
Join Date: Nov 2009
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Can you tell me how to disconnect the fuel sender? I am trying to diagnose a similar problem. My cluster lights up nice and bright but have what I call a lazy fuel gauge. It does not always work but if it does it slowly rises to 1/4 tank and stays there. Don't mean to hi-jack the thread but I am in a similar predicament which I believe is somewhat related.
11-23-09, 04:18 AM
#4
Your problem is definitely related to the cluster, it's a common issue on the early LS models.
I'm going to have to spring for another cluster. I'm led to several questions:
1) Does anyone offer repair services for the 1995-1997 cluster?
2) Is there a pinout for the fuel gauge components for a DIY R&R using a spare cluster?
3) Does anyone know a source to "clock" the odometer on a replacement cluster, to adjust it to the mileage of the old cluster? It's this side of 230,000 miles anyway.
I'm going to have to spring for another cluster. I'm led to several questions:
1) Does anyone offer repair services for the 1995-1997 cluster?
2) Is there a pinout for the fuel gauge components for a DIY R&R using a spare cluster?
3) Does anyone know a source to "clock" the odometer on a replacement cluster, to adjust it to the mileage of the old cluster? It's this side of 230,000 miles anyway.
12-03-09, 05:43 PM
#5
Well that's just f--ing great, nobody's ever even heard of this part going bad.
Maybe I'll just get one of these g-d things and put it in a gauge pod on the A-pillar.
http://www.bobsgauges.com/servlet/th...s-Level/Detail
Maybe I'll just get one of these g-d things and put it in a gauge pod on the A-pillar.
http://www.bobsgauges.com/servlet/th...s-Level/Detail
12-03-09, 08:04 PM
#6
just get another cluster. I found one for cheap at a junkyard. Not many people need 2nd gen clusters like they do 90-94(especially 93-94). less demand, less price, just scour the net, you'll find one.
I know the in the 93-94 models you can just switch a circuit board and switch mileage. I've done it.
I'm gonna be receiving my 95 cluster that i bought just for the speedo needle. I'll see if can do the same.
I know the in the 93-94 models you can just switch a circuit board and switch mileage. I've done it.
I'm gonna be receiving my 95 cluster that i bought just for the speedo needle. I'll see if can do the same.
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12-04-09, 02:04 PM
#9
12-05-09, 11:13 AM
#10
cant find my camera so no photos. sorry
i replaced the speedo needle from the junk cluster and put it in my car. The gauge cluster is very easy disassemble. You don't even need precision phillips. just reg philips works fine. took me a total of 1.5 hours to disassemble and reassemble 2 gauge clusters.
Make sure to remove the steering column cover off (easy to scratch), and lower and extend the wheel all the way.
i replaced the speedo needle from the junk cluster and put it in my car. The gauge cluster is very easy disassemble. You don't even need precision phillips. just reg philips works fine. took me a total of 1.5 hours to disassemble and reassemble 2 gauge clusters.
Make sure to remove the steering column cover off (easy to scratch), and lower and extend the wheel all the way.
12-05-09, 10:15 PM
#11
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Firstly :
https://www.clublexus.com/forums/ls4...d-problem.html
So was the problem with the gas gauge, or?
https://www.clublexus.com/forums/ls4...d-problem.html
So was the problem with the gas gauge, or?
12-23-09, 11:26 AM
#12
Problem solved. I got a junkyard cluster from another LS and swapped the '95 circuit board on the back because the new one had different connectors. It all works now. Playing with the old gauge, the impedance values were correct but the dampening fluid must have leaked out, making the needle very loosey-goosey, and causing it to peg with the slightest input.
12-24-09, 11:30 AM
#14
So it was, by all means, the gauge itself
BUT!!!!!! You have a '94 LS, right? I thought that fuel gauge issues with those were... because of the damn board, some capacitors being the problem. And your odometers are mechanical, aren't they? You should just get a complete replacement cluster and then swap your odometer in.
How is Joburg these days? I was there this summer. Got to play with lion cubs at the Lion Park, and almost got killed in the CBD.