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I need help hooking up my temperature sensor. The temp gauge has not worked since I've had the truck (1984 F-150 i6). I converted the ignition back to Duraspark II. When I did so I tore out the computer.
If you look at the pictures below, there are two wires coming off the sensor, one green and one black.
I have three unused wires coming out of the instrument panel/dash.
Chiltons says the sensor connects to a red/white wire. But the sensor has two wires. Is the black one for ground? I tried running the black wire to ground, and hooking up the green wire to each of the three unused wires from the instrument panel, and none of them worked.
I need help hooking up my temperature sensor. The temp gauge has not worked since I've had the truck (1984 F-150 i6). I converted the ignition back to Duraspark II. When I did so I tore out the computer.
If you look at the pictures below, there are two wires coming off the sensor, one green and one black.
I have three unused wires coming out of the instrument panel/dash.
Chiltons says the sensor connects to a red/white wire. But the sensor has two wires. Is the black one for ground? I tried running the black wire to ground, and hooking up the green wire to each of the three unused wires from the instrument panel, and none of them worked.
That temp sensor should only have been for the computer. The temp sensor for the temperature gauge is at the back of the engine block on the passenger side and has only one wire. The wire is in the DSII harness and feeds around the back of the engine from the driver's side. Even in the EFI trucks, the EFI computer is wired independently of the instrument cluster.
I need help hooking up my temperature sensor. The temp gauge has not worked since I've had the truck (1984 F-150 i6). I converted the ignition back to Duraspark II. When I did so I tore out the computer.
If you look at the pictures below, there are two wires coming off the sensor, one green and one black.
I have three unused wires coming out of the instrument panel/dash.
Chiltons says the sensor connects to a red/white wire. But the sensor has two wires. Is the black one for ground? I tried running the black wire to ground, and hooking up the green wire to each of the three unused wires from the instrument panel, and none of them worked.
The others are correct, that is not the right sensor. As you were pulling the computer and it's wires out, that sensor would have been in the computer harness, and you would have known that it's not used anymore. You may have been in the matthew thread debacle and that point may have been lost. Sorry if that happened to you.
The others are correct, that is not the right sensor. As you were pulling the computer and it's wires out, that sensor would have been in the computer harness, and you would have known that it's not used anymore. You may have been in the matthew thread debacle and that point may have been lost. Sorry if that happened to you.
That temp sensor should only have been for the computer. The temp sensor for the temperature gauge is at the back of the engine block on the passenger side and has only one wire. The wire is in the DSII harness and feeds around the back of the engine from the driver's side. Even in the EFI trucks, the EFI computer is wired independently of the instrument cluster.
Okay found the temp sensor and got it working. Thanks for the help.
What does the computer do with the other temp sensor?
That temp sensor should only have been for the computer. The temp sensor for the temperature gauge is at the back of the engine block on the passenger side and has only one wire. The wire is in the DSII harness and feeds around the back of the engine from the driver's side. Even in the EFI trucks, the EFI computer is wired independently of the instrument cluster.
This.
There is a difference between a sensor and a sender; the green/black is the 2-wire setup for the EEC-IV computer (it makes adjustments to the air/fuel ration based partially on that sensor). The red/white or white/red (I forget which) is for the water temp gauge, the other is for the oil pressure.
Okay found the temp sensor and got it working. Thanks for the help.
What does the computer do with the other temp sensor?
Like was mentioned in the previous post, whether the engine is cold, warm or hot, makes a big difference in making the engine run correctly and for emissions strategy. The old style engines with no computer had temperature sensing vacuum switches to turn things on and off with vacuum depending on the engine temp. EGR was one of them. Your old style carb now controls the idle speed when the engine is cold, making it idle faster. The computer carb had a little bit of control on the fastest step, but all the other fast idle settings were controlled by a idle control motor mounted on your old carb, depending on engine temp and a few other parameters. This was controlled by the computer, and it got it's engine temperature info from that sensor.
It worked basically like fuel injection on a primitive scale.
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