What should the temp gauge be on a Jeep CJ?
What should the temp gauge be on a Jeep CJ?
The Jumper/Regulator Strap is composed of two strips of metal that continuously make and break contact, regulating the output to the Temp gauge to 5 volts. A volt meter applied to the A terminal on the Temp gauge should fluctuate (plus and minus) near 5 volts.
How can I check the CJ gauge voltage?
Run an appropriate resistor to the S terminal of the fuel gauge and to ground and check the readings. The temp gauge has the following resistance. A volt meter can be used to measure the voltage between the A terminal of the Temp gauge and ground. It should be pulsing and averaging about 5 volts.
What are the terminals on a CJ gauge?
Fuel gauge S terminal has a pink wire and runs to the fuel sender. 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.
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.
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.
The Jumper/Regulator Strap is composed of two strips of metal that continuously make and break contact, regulating the output to the Temp gauge to 5 volts. A volt meter applied to the A terminal on the Temp gauge should fluctuate (plus and minus) near 5 volts.
Run an appropriate resistor to the S terminal of the fuel gauge and to ground and check the readings. The temp gauge has the following resistance. A volt meter can be used to measure the voltage between the A terminal of the Temp gauge and ground. It should be pulsing and averaging about 5 volts.
Why does my CJ7 speedometer gauge keep pegging?
The resistors dropped the voltage down to about six volts for the gauges. When the gauges keep pegging all the way to the top its because their resistors are blown on the original ones. On the new gauges the problem is that THEY HAVE NO RESISTORS.
