red wire with a blue tracer

[scroller bill]

Hi all. Vehicle info is in my signature. The harness that the alternator plugs into has a red wire with a blue tracer that was cut about 2" from the harness. My question is, should this wire go to the large terminal on the starter relay (battery side)?

Question 2. My computer is not hooked up to anything yet but the coolant temp sensor wires go into the computer harness and my temp guage is working. Does this mean that the sensor wires just use the computer harness as a way to get through the firewall and to the guage?

 

[BLADE262US]

On the coolant sensor wires theres actually 2 sensors, one for the guage and one for the computer , The one for the computer is very important . and must be hooked up I dont remember right off but it will either cause a lean condition or a very rich one because the computer doesnt know the coolant temp for fuel enrichment . /emoticons/[email protected] 2x" width="20" height="20" />

 

[scroller bill]

Blade, the sensor at the thermostat housing, is this for the guage? and where would the sensor for the computer be?

One more question. after idling for 10 minutes, is it normal for the heater hoses to be really hot to the touch?

Thanks. Bill

 

[BLADE262US]

Yeah thats normal for the heater hoses to be hot , The computer sensor is mounted more to the middle drivers side of the lower intake and yes the guage one is by the water neck . To be sure of this unplug the one by the water neck have someone watch the guage with the key on ( NOT RUNNING ) ground that wire to the block or anywhere the guage will go to the hot side then you know that wire is for the guage . /emoticons/[email protected] 2x" width="20" height="20" />

 

[scroller bill]

Blade, I have a feeling you think I have a v8. I have a 4.9l 300 inline 6 and is carbureted not fuel injection. I only have an intake manifold on the passenger side of the engine. The sensor on mine is at the thermostat housing and has 2 wires. I know by previous info that the 2 wire sensor is for the computer. Im trying to find out where the guage sensor is located.

Sorry for mix up. May have been my fault.

Bill

 

[Seabronc]

Hi all. Vehicle info is in my signature. The harness that the alternator plugs into has a red wire with a blue tracer that was cut about 2" from the harness. My question is, should this wire go to the large terminal on the starter relay (battery side)?

The red wire with a blue tracer goes from your key switch start position to the small post on the starter relay.

Question 2. My computer is not hooked up to anything yet but the coolant temp sensor wires go into the computer harness and my temp guage is working. Does this mean that the sensor wires just use the computer harness as a way to get through the firewall and to the guage?

The gague sender unit has a one wire connector with a Red with White stripe wire. Not sure of the exact position on the I6.

>-

 

[scroller bill]

Thanks seabronc, you came through for me again. About the red/blue wire that is cut, because of where you said it should be connected, I think there may have been a problem with that wire and that is why it was cut. I have a totaly seperate wire coming out of the firewall that goes to that small post on the solenoid. If I disconnect that wire nothing happens when I turn the key to start the engine. Who ever ran that wire put an inline fuse on it about 6" from the solenoid.

I think i'm going to leave things the way they are. I'm afraid to reconnect that wire because it must have been cut for a very good reason and i'm not going to find out what that reason was.

Thanks again. Bill

P.S. could the single wire temp sensor be located on passenger side, rear of engine block about half way up?

 

[wtfdissux]

sound about right for the sensor about 6 inches or so from the back of block on the passenger side and a rather odd question about the sensors I read somewhere that when I first turn my key to run the gauge should go from cold to hot and settle to whatever is correct at the time as sort of a self test is there anything to this or is it BS ?