Jgriggs
Junior Member
- Joined
- Nov 2, 2016
- Posts
- 10
- Reaction score
- 0
- Location
- Spokane
- First Name
- Jim
- Truck Year
- 79
- Truck Model
- C30
- Engine Size
- 454
Instrument cluster seems to have quite working.
Volts, oil press. Clock, temp, and fuel Gauge.
Clock has never worked since I've had the truck. 79 C30 btw. Maybe the clock is relevant to the problem, maybe not.
The rest of them did work. The temp had been reading about a little above the midway point, but had started reading cold, like about a needle width off the C line however heater was still blowing hot, coolant level good.
Oil pressure is pegged all the way past 60 psi, does not drop when key off. I had a 91 camaro that did this too, that was because the sender was not plugged in. In this case it is.
Fuel, we'll at 8.5 mpg, it might well be working I guess, it stays at 1/16 all the time. There is a gray wire coming out of the back of the fuel Guage, that wire is not attached to anything, it was broken. There was another gray wire in a loom that was also broken, that wire being about one size smaller. The only gray wire I can seem to find looking at diagrams is a speaker ground. Neither of these two wires have power going to them either with key on or otherwise. When I check them both for continuity, they both have continuity to ground. Put them together, and still nothing.
I don't care what time it is, volts, oil pressure, and temp would be nice, but not super important. But gas at 8.5 mpg...yeah, I need that one.
Any ideas?
Volts, oil press. Clock, temp, and fuel Gauge.
Clock has never worked since I've had the truck. 79 C30 btw. Maybe the clock is relevant to the problem, maybe not.
The rest of them did work. The temp had been reading about a little above the midway point, but had started reading cold, like about a needle width off the C line however heater was still blowing hot, coolant level good.
Oil pressure is pegged all the way past 60 psi, does not drop when key off. I had a 91 camaro that did this too, that was because the sender was not plugged in. In this case it is.
Fuel, we'll at 8.5 mpg, it might well be working I guess, it stays at 1/16 all the time. There is a gray wire coming out of the back of the fuel Guage, that wire is not attached to anything, it was broken. There was another gray wire in a loom that was also broken, that wire being about one size smaller. The only gray wire I can seem to find looking at diagrams is a speaker ground. Neither of these two wires have power going to them either with key on or otherwise. When I check them both for continuity, they both have continuity to ground. Put them together, and still nothing.
I don't care what time it is, volts, oil pressure, and temp would be nice, but not super important. But gas at 8.5 mpg...yeah, I need that one.
Any ideas?
