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bochnak
10-21-2013, 11:13 AM
Anyone have the temp gauge sender resistance values handy?

I found this:
http://www.jamestowndistributors.com/userportal/document.do?docId=842

75F - 600-800 ohms

212F - 55 ohms


Does anyone else have more values, maybe at 140F? Maybe I can assume if would be around 325 or so ohms?

mikeg205
10-21-2013, 12:28 PM
Clymer's has

212 - 177
158 - 467
104 - 1800
68 - 3520

bochnak
10-21-2013, 12:34 PM
Clymer's has

212 - 177
158 - 467
104 - 1800
68 - 3520

Thanks Mike. I think those values might be for the ETS sensor for the ECM. I'm looking for the values for the CTS that the gauge reads.

When I disconnect and ground the tan wire from sender from intake (0 ohms) I can get the gauge to peg to 240. Infinite resistance gives me no reading.

mikeg205
10-21-2013, 01:03 PM
I got a new one from WWW.SKIDIM.COM they will prolly have the values.

bochnak
10-21-2013, 03:32 PM
I got a new one from WWW.SKIDIM.COM they will prolly have the values.

Clymer does not have these values? I want to buy that manual.

mikeg205
10-21-2013, 03:50 PM
Clymer does not have these values? I want to buy that manual.

Those are the ones I gave you.

bochnak
10-21-2013, 04:02 PM
Those are the ones I gave you.

OK, looks like they only cover the ECM one then?

mikeg205
10-21-2013, 04:03 PM
I bet that is correct.

j.mccreight@hotmail.com
10-21-2013, 08:42 PM
The coolant gauge should be a 33-240 ohm type. 33 full hot (grounded) 240 full cold.(disconnected)

bochnak
10-21-2013, 09:18 PM
The coolant gauge should be a 33-240 ohm type. 33 full cold, 240 full hot.

James, the gauge pegs full hot when wire is grounded. Reads full cold when disconnected.

j.mccreight@hotmail.com
10-21-2013, 09:27 PM
James, the gauge pegs full hot when wire is grounded. Reads full cold when disconnected.

Oops, I wrote it wrong, your gauge and wiring seems to be working correctly.

bochnak
10-22-2013, 11:20 AM
I tested the sending unit yesterday and found it to be good:

Temp F / Ohms

55 / 1500
75 / 775
120 / 210
170 / 95
190 / 53

The issue I'm having is the temp gauge reads 120, maybe 130 with a new 142/143 t-stat. Disconnecting the wire it reads 120, while grounding reads 240. I have various resistors ranging from 80-150, so I'll run the gauge through those and compare to sender values to see if it is the gauge.

I also have an IR gun to point at motor but that will have to wait until spring.

bochnak
11-11-2013, 12:46 PM
I tested the sending unit yesterday and found it to be good:

Temp F / Ohms

55 / 1500
75 / 775
120 / 210
170 / 95
190 / 53

The issue I'm having is the temp gauge reads 120, maybe 130 with a new 142/143 t-stat. Disconnecting the wire it reads 120, while grounding reads 240. I have various resistors ranging from 80-150, so I'll run the gauge through those and compare to sender values to see if it is the gauge.

I also have an IR gun to point at motor but that will have to wait until spring.

I tested the gauge by grounding the tan wire through a 100 ohm resistor and gauge displayed about 130 or so. Same result at back of gauge. Time for a new gauge.