was there a thread here?

 

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?

 

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.

 

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.

 

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

 

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.

 

Hey Omar, when you do that please make a thread about it (or post in here) about how it went, and post pictures!

 

its most likely the cluster. same thing happens to mine once in a while.

 

will do bud. UPS just delivered my 95 cluster. Will do my best to get it done in the coming days.

 

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.

 

Firstly :
https://www.clublexus.com/forums/ls4...d-problem.html

So was the problem with the gas gauge, or?

 

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.

 

So what you are saying is that the gauge was faulty, not the electronic boards behind?

(Just to make sure before I go and order a gauge )

 

I reused the original electric board because the new cluster's board had a different orange and blue harness connector - so that comprehensively rules out the board being an issue. Plus, the board has the odometer reading on it - so it would have been essential to reuse it anyway.

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.

 

93-94 odo is digital.

glad to see you got it taken care of. Sorry i never got back to you! Holidays are hectic.