billy boi

my gas needle takes forever to go up . sometimes , it doesnt even go up . or it goes up real low . does anyone know whaty might be the problem is ?

phillipin

fuel level sender probably getting too old, most older cars over 8 years will have that going on, mine rises at a decent rate still, not as fast as my 02 corolla but way faster than our 90 corolla

CELICA XX

Nope, its a circuit board design problem. Jim Walker includes this in his famous cluster repair...

Here is one of the current auctions on e-Bay:

http://cgi.ebay.com/ebaymotors/Lexus...QQcmdZViewItem

damon

On my 94 the problem was the following capacitor:
Fuel Gauge Capacitor C-142

LexLS

...and on 90-92 LS's it's also a bad cap. Once recapped it will work like new .

dunn378

where is the fuel gauge capacitor located?

damon

It is located in the instrument cluster. I would only use someone proficient in board level soldering for this or you can quickly & easily do more harm than good.

I would also change C212 which controls Dashboard Instruments Display.
10uf 16v EC cap. Its on the processor or smaller PCB board. Reference is C212

http://www.lexls.com/tutorials/elect...ntcluster.html

LexL:S has provided an incredibly helpful tutorial w pics to aid you.

damon

dunn378

and all i have to do is tell the dealer i need a fuel gauge capacitor for a 91 Ls? how much is the cap?

damon

Dealer would have to put down his donut & coffee he just spilled & quit laughing first. His approach would cost you in the $2000.00 range.

You would be best served by searching the forum & finding someone like Jim Walker to send your boards to. I think that he is in the $200.00 range.

If you do find a local that can solder well, he should have no problem locating the caps required.

chrisngo

iTrader: (1)

Go online to www.mouser.com

Search for the cap spec that you need. Should be under $1.00

Chris

dunn378

ok cool, thanks alot!!

damon

Dunn,

You need to have several skills to get this handled.

First things first, the link above will show you how to get at the boards we are talking about before you can think about servicing them.

You can drive your vehicle without the board in place but you will have no dash at all so you would want this to be a short term situation.

I would only trust someone w excellent soldering skills or this could get real expensive!!

I would also change out C-212 as I mentioned earlier.

LexLS

damon,
90-92 clusters have totally different boards and caps, you're referring to 93-94 clusters. Both clusters are removed from the vechicle the same way though.

I was able to fix my slow moving fuel gauge needle in my 91. If you send your board to me I can fix the problem for ya, email me if you're interested. I'm in the middle of getting a tutorial up on fixing this problem.....but I don't want to say too much since I've personally spent hundreds of dollars researching, testing, etc and countless hours of my time. Check for updates on my site to see if I ever get it done!

dunn378

after much thought i think ill just leave it alone. like i said my gauge works , it just stops between 3/4 and full even thought the tank is full. i guess i can deal with it for now. thanks for all your help!