GM Service Manual Online
For 1990-2009 cars only

Temperature Versus Resistance ECT

°C

°F

OHMS

Temperature vs Resistance Values (Approximate)

150

302

47

140

284

60

130

266

77

120

248

100

110

230

132

100

212

177

90

194

241

80

176

332

70

158

467

60

140

667

50

122

973

45

113

1188

40

104

1459

35

95

1802

30

86

2238

25

77

2796

20

68

3520

15

59

4450

10

50

5670

5

41

7280

0

32

9420

-5

23

12300

-10

14

16180

-15

5

21450

-20

-4

28680

-30

-22

52700

-40

-40

100700

Temperature Versus Resistance IAT 1

°C

°F

OHMS

Temperature vs Resistance Values (Approximate)

150

302

64

144

291

72

138

280

81

132

269

92

126

258

104

120

248

119

114

237

136

108

226

156

102

215

181

96

204

209

90

194

245

84

183

286

78

172

338

72

161

400

66

150

477

60

140

572

55

131

689

49

120

840

43

109

1030

37

98

1271

31

87

1580

25

77

1978

19

66

2509

13

55

3218

7

44

4164

1

33

5439

-4

+24

7169

-10

+14

9590

-16

+3

13089

-22

-7

18078

-28

-18

25284

-34

-29

35832

-40

-40

51499

Temperature Versus Resistance IAT 2

°C

°F

OHMS

Temperature vs Resistance Values (Approximate)

-40

-40

48977

-35

-31

36528

-30

-22

27503

-25

-13

20899

-20

-4

16026

-15

+5

12388

-10

+14

9654

-5

+23

7584

0

32

5995

5

41

4776

10

50

3829

15

59

3090

20

68

2510

25

77

2051

30

86

1685

35

95

1392

40

104

1156

45

113

965

50

122

809

55

131

682

60

140

577

65

149

491

70

158

419

75

167

359

80

176

309

85

185

267

90

194

231

95

203

201

100

212

176

105

221

154

110

230

135

115

239

119

120

248

105

125

257

93

130

266

83

135

275

74

140

284

66

145

293

59

150

302

53