Where is the temperature gauge on a CJ gauge?
Temperature gauge A terminal is the 5V side of the jumper/regulator strap. Temperature gauge S terminal has a purple wire and runs from the temperature sender. The jumper/regulator strap runs from a voltage regulator inside the fuel gauge (terminal A) to the temperature gauge (terminal A).
Why is my CJ gauge not moving on my Jeep?
Jeep CJ gauges, like all older Jeeps, will wear out over time. troubleshoot Jeep CJ Gauges and prolong the life of the OEM parts with these simple techniques. If you see your temperature gauge not moving, you may be able to assess and repair the problem in no time.
What kind of wire is a fuel gauge?
Fuel gauge A terminal is the 12V side of the jumper/regulator strap. Fuel gauge I terminal has a red wire and is the 12 V ignition hot wire. Temperature gauge A terminal is the 5V side of the jumper/regulator strap.
Where is the fuel sending wire on a Jeep CJ?
The fuel sending unit wires are located on top of the gas tank where they are hard to get to without dropping the tank. The fuel sending unit should have a pink wire with voltage on the isolated center post. The other black wire on the sending unit with a tab style connector is a ground to the frame.
How does the temperature gauge work on a Jeep CJ?
The temperature gauge gets it power from the regulated output of the fuel gauge so the jumper strap connecting the A terminals of the fuel and temperature gauges must be left intact. The gauge needles shouldn’t have moved from the off position until you take a resister from the S terminal to ground.
What should the voltage be on the CJ gauge?
A volt meter can be used to measure the voltage between the A terminal of the temperature gauge and ground. It should be pulsing and averaging about 5 volts. If it reads 12 volts the jumper strip/regulator is bad. If it reads 0 volts, it has been burnt out. The sending unit can be checked with the following resistance between the post and ground…
What kind of fuel gauge does a jeep have?
The type in the Jeep is a NTC (Negative Temperature Coefficient) which means that as the temperature goes up, the resistance goes down. From the passenger side which is left to right in the picture above. Fuel Gauge S Terminal – pink wire (from fuel sender)
Why does the CJ gauge read higher with higher oil pressure?
The higher the fuel level or engine oil pressure, the lower the resistance. With less resistance, more current flows and the gauge reads higher. The oil pressure sender and fuel sender are both electro-mechanical devices but the temperature sender is not.
How many volts does a Jeep CJ gauge have?
There have been reports of this regulated voltage being as high as 7-9 volts with no loss of gauge function. If 12 Volts is applied to the temperature gauge’s A terminal, it will cook the temp gauge!
What does 12 volts on fuel gauge mean?
A volt meter applied to the A terminal on the Temp gauge should fluctuate (plus and minus) near 5 volts. A reading of 12 volts on the temperature side indicates a bad Jumper/Regulator Strap. 12 volts applied to the temperature gauge’s A terminal will cook the gauge. The fuel gauge should have the following resistances …
What are the terminals on the fuel gauge?
Fuel Gauge I Terminal – red wire (ignition-on hot 12v) Temperature Gauge A Terminal – jumper from fuel gauge A terminal (jumper strap to regulated voltage) Temperature Gauge S Terminal – Purple wire (from temperature sender) Some manuals and gauges have the S and A terminals reversed on the temperature gauge.
Temperature gauge A terminal is the 5V side of the jumper/regulator strap. Temperature gauge S terminal has a purple wire and runs from the temperature sender. The jumper/regulator strap runs from a voltage regulator inside the fuel gauge (terminal A) to the temperature gauge (terminal A).
What’s the problem with the fuel gauge on a CJ7?
The most common issue I have encountered has to do with the temperature and fuel gauges. Working on a current CJ7 project I finished the wiring and found that both the fuel and temperature gauge were pegging all the way to Full and Hot.
There have been reports of this regulated voltage being as high as 7-9 volts with no loss of gauge function. If 12 Volts is applied to the temperature gauge’s A terminal, it will cook the temp gauge!
Where to get resistors for CJ7 speedometer gauges?
We will wire these gauges separately now. Second, go to Radio Shack or order resistors online. At Radio Shack I was able to pick up packs of 100 ohm 1 watt resistors (the small ones in the photo below) and 50 Ohm 10 watt resistors (big white one)
What to do if your car temperature gauge is not working?
If your car computer acts as an interface between the sending unit and temperature gauge or warning light, turn the ignition switch off when disconnecting wires from the sending unit, warning light, or temperature gauge. You need to do this to prevent induced-voltage damage to the computer. Consult your vehicle repair manual. 6.
How to take a Honda CB / CX GL tachometer apart?
Unfortunately the case is not simply screwed together, the front and back halves are held together with a band that has to be removed to split the case apart to fix the dial face. So that is what this instrucatable covers, how to remove the band and take the tachometer apart as well as the speedometer.
What to do if your CJ gauge is not moving?
If you see your temperature gauge not moving, you may be able to assess and repair the problem in no time. Likewise, get a Jeep CJ fuel gauge diagnosis with minimum stress. The following information, the image at the bottom of this article and a decent volt/ohm meter should help you do just that.
Why is the temperature gauge on my car not working?
If you know the engine temperature is not an issue, you probably have to deal with one of these problems; The temperature sensor/sending unit is faulty. If this is the case your sensor will be reading the coolant temperature incorrectly and sending the wrong signal to the gauge.
Is the temperature gauge on a Honda del Sol working?
This article applies to the Honda Civic, Del Sol (1992-2000). Most of the time drivers rarely even glance at the temperature gauge. If something goes wrong and your car does overheat, that gauge can warn you of impending doom and save thousands of dollars in the process.
What should I do if my temperature gauge keeps going cold?
In some cases, you can replace the temperature gauge or repair any bad solderings if you find any. In other clusters, you might have to replace the instrument cluster. You can often leave your instrument cluster to an expert to repair the soldering if you do not know how to yourself.
What causes an engine temperature sensor to go off?
1. Faulty Engine Coolant Temperature Sensor. The most common problem when it comes to a faulty engine temperature readings is the coolant temperature sensor itself which is sending the information to the cluster.