Temperature gauge sensor.

BX Tech talk
tom
Citroen Sorceror
Posts: 1279
Joined: Fri May 20, 2005 8:51 pm
Location: France
My Cars: 2003- Passe-Partout 1.9 TGD estate
2005 Grolliffe Tizzydee turbo estate and sundry other BXs and Grace, a CX TRD.
2008 to 2023 - all sorts of stuff, some interesting
2024. TxD 1.9D estate. 'Wheelybin'. Much worse than expected. Scrapped.
2025 Grogan. 1.9 TD Evasion Image Break. LHD.
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Temperature gauge sensor.

Post by tom »

The standard sensor for adding a temperature gauge: Ref:30767.
I have plotted the resistance vs temperature of a new sensor and I am posting the figures here because they may be of use to somebody one day.
Sensor temperature in Celsius. Resistance in Ohms.
120 90 Boiling point with expansion tank fitted
119 92
118 95
117 97
116 100
115 102
114 104
113 108
112 110
111 113
110 117 Game over: red light on
109 120
108 123
107 127
106 131
105 134
104 138
103 142 Ready to blow: yellow light on
102 146
101 150
100 155
99 160
98 164
97 169 Cooling fan high speed cut in temp Turbo
96 174
95 179
94 185 Cooling fan high speed max cut in temp non turbo
93 190 Cooling fan low speed cut in temp Turbo
92 196
91 202
90 208 Cooling fans high speed min low speed max cut in temp non turbo
89 214
88 221 Thermostat starts to open non turbo
87 228
86 234 Cooling fan low speed min cut in temp non turbo
85 241
80 284 Thermostat starts to open at 83 degrees turbo
75 334
70 394
65 470
60 563
55 691
50 840
18 2750.