Temp Sending Unit

[custodian]

Can anyone tell me if a temp sending unit from an 85 C10 305 V8 work with a 73 C10 gauge? I want to use the smaller sending unit in my LS swap.

 

[Camar068]

not going to use the 3 wire camaro sender? That will take care of your gauge and signal to the PCM.

 

[custodian]

not going to use the 3 wire camaro sender? That will take care of your gauge and signal to the PCM.

What year and how would it be wired?

 

[Camar068]

ACDELCO 12551708 (1998 camaro sender) works for my 86 K10 gauge.

 

[custodian]

ACDELCO 12551708 (1998 camaro sender) works for my 86 K10 gauge.

I watched a video on this, going to try it. I have a TPS plug I can use. Do you know which pin on the sensor is the gauge wire, and which pin goes to the Yellow and Gray wire in the harness (I'm using a stock wire harness and just cut off the connectors I didn't need and tucked them back into the wire harness)?

 

[custodian]

ACDELCO 12551708 (1998 camaro sender) works for my 86 K10 gauge.

I think I have it figured out. Looking at the plug, the bottom pin would go to the gauge, top left would go to the yellow wire in the harness and the top right pin would go to the gray wire in the harness.

 

[Camar068]

if you've not referenced it yet, you need to.....

https://lt1swap.com/wiringharness.htm

 

[custodian]

if you've not referenced it yet, you need to.....

https://lt1swap.com/wiringharness.htm

I'll make sure I connect to the right wire. I'll check my PCM pinouts for the 01 Silverado. A is for the low reference to computer, B is senor signal to computer and C is for the gauge.

You must be registered for see images attach

 

[Bextreme04]

My tr

I'll make sure I connect to the right wire. I'll check my PCM pinouts for the 01 Silverado. A is for the low reference to computer, B is senor signal to computer and C is for the gauge.

You must be registered for see images attach

Before installing anything with a hacked harness, make sure you ring out every connection to it's expected pin on the ECU connector. There are all kinds of bad things you can come across, such as broken wires mid-harness or things accidentally pinned into the wrong spot. Verify it before connecting power

 

[custodian]

My tr

Before installing anything with a hacked harness, make sure you ring out every connection to it's expected pin on the ECU connector. There are all kinds of bad things you can come across, such as broken wires mid-harness or things accidentally pinned into the wrong spot. Verify it before connecting power

Agree.

 

[Camar068]

and before you fire it up, check all your grounds at the pcm connector to vehicle ground. Sucks when you miss some.

 

[Bextreme04]

and before you fire it up, check all your grounds at the pcm connector to vehicle ground. Sucks when you miss some.

THAT's a great point too. It won't fry anything to not have a ground hooked up, but man will it cause some problems!

 

[custodian]

and before you fire it up, check all your grounds at the pcm connector to vehicle ground. Sucks when you miss some.

Yea, So far I have all the grounds but one connected. I cranked this motor on a stand a few months back.

 

[75gmck25]

You might have to do some more research on sending unit resistance to get it working correctly with a stock '73 gauge. The sending unit resistance profile for my '75 gauge is not the same as the newer trucks, and most places now stock sending units that match the newer gauges. My gauge always read extremely low when I used the newer sending units.

Also the sending unit I finally settled on is the larger thread diameter, which won't work with my new heads, so I moved it to the threaded fitting on my Edelbrock intake.

 

[Camar068]

You might have to do some more research on sending unit resistance to get it working correctly with a stock '73 gauge. The sending unit resistance profile for my '75 gauge is not the same as the newer trucks, and most places now stock sending units that match the newer gauges. My gauge always read extremely low when I used the newer sending units.

Also the sending unit I finally settled on is the larger thread diameter, which won't work with my new heads, so I moved it to the threaded fitting on my Edelbrock intake.

I wonder if he could use a 350 sender? I'm gonna guess they aren't the same size, but worth looking into. If they are, have a sender on each head....one for gauge and one for PCM.