Question For JD 4230 Owners

   / Question For JD 4230 Owners #1  

JD5210

Veteran Member
Joined
Sep 1, 2010
Messages
1,146
Location
Virginia
Tractor
5210 MFWD
I am helping my neighbors dad with repairs on his 1977 JD 4230 cab diesel tractor. What is next on the list is the fuel gauge. The gauge is always on full, when the key is in run position. When I disconnect the wire at the sender and ground it on the tractor, the gauge goes to empty. To me this is backward how things should work. My question is this normal?

I have taken out the gauge out of the cluster and the gauge by itself works this way. I have not taken the sender out as the tank is full.

Thanks in advance for any help on this.
 
   / Question For JD 4230 Owners #2  
That is normal reaction of the gauge. Most likely you have a bad sending unit. Occasionally, the gauge can still be bad when it reacts normally when grounding the sender wire. The oonly way to know for sure is by connecting a known good sender.
 
   / Question For JD 4230 Owners #3  
i had that problem in a 4630.it was a short in the sending unit.
 
   / Question For JD 4230 Owners #4  
I've only had this happen once on a JD 2640...bad sending unit.

-Phillip
 

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