I have just got done swapping in a nv4500 into my 80 model dually that I tow my drag car and jeep with. I have gotten every thing working but I'm having a problem with the fuel gauge wanting to go to full then back to the right spot. Did they change the ohms on the fuel injected trucks? Could it be a ground wire problem in the cluster?
CK5
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fuel gauges
- Thread starter odee1
- Start date
thanks, I thought that I had put in the previous post that I had swapped in the cluster from the 90-91 sub that had the elctronic type speedometer. Everything else is working except for the minor problem with the fuel gauge. I'm gonna run another ground over to the body ground by the door jamb.
No reason to run extra wiring...just use a voltmeter to make sure the circuit for the fuel gauge is good on the circuit board, and check the connector as well...I would be willing to bet that if your oil and voltmeter works, your ground is fine.
I haven't looked at the non-tach clusters lately, but my '81 tach cluster uses the same ground for volts, oil, and fuel. (I'd suspect the same is true of non-tach clusters, only difference perhaps that the large fuel gauge may share ground with the dash bulbs) So if two out of three gauges work, in my case, I know it's not the ground. At least not the ground for the connector.
I haven't looked at the non-tach clusters lately, but my '81 tach cluster uses the same ground for volts, oil, and fuel. (I'd suspect the same is true of non-tach clusters, only difference perhaps that the large fuel gauge may share ground with the dash bulbs) So if two out of three gauges work, in my case, I know it's not the ground. At least not the ground for the connector.
