Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1999 Saturn SL1 AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Control System - Sensor Range Charts: Introduction
Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a trouble code, but it will cause driveability problems.
NOTE:
Unless stated otherwise in test procedure, perform all voltage tests with a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
| Temperature °F (°C) | Ohms | ||||||
|---|---|---|---|---|---|---|---|
| 176 (80) | 315 | ||||||
| 158 (70) | 435 | ||||||
| 140 (60) | 580 | ||||||
| 122 (50) | 810 | ||||||
| 113 (45) | 940 | ||||||
| 104 (40) | 1150 | ||||||
| 95 (35) | 1360 | ||||||
| 86 (30) | 1600 | ||||||
| 77 (25) | 2000 | ||||||
| 68 (20) | 2400 | ||||||
| 59 (15) | 3000 | ||||||
| 50 (10) | 3600 | ||||||
| 41 (5) | 4600 | ||||||
| 32 (0) | 5700 | ||||||
| 23 (-5) | 7400 | ||||||
| 14 (-10) | 9800 | ||||||
| 5 (-15) | 12,700 | ||||||
| -4 (-20) | 16,000 | ||||||
|
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| Temperature °F (°C) | Ohms | ||||||
|---|---|---|---|---|---|---|---|
| 284 (140) | 63-68 | ||||||
| 248 (120) | 104-113 | ||||||
| 220 (105) | 159-172 | ||||||
| 200 (94) | 215-235 | ||||||
| 180 (83) | 302-334 | ||||||
| 160 (72) | 430-480 | ||||||
| 140 (60) | 650-730 | ||||||
| 120 (49) | 980-1100 | ||||||
| 100 (38) | 1500-1700 | ||||||
| 80 (27) | 2400-2700 | ||||||
| 60 (16) | 3900-4500 | ||||||
| 40 (4) | 6600-8400 | ||||||
| 20 (-7) | 11,000-15,000 | ||||||
| 0 (-18) | 21,000-27,000 | ||||||
| -20 (-29) | 39,000-53,000 | ||||||
| -40 (-40) | 77,000-109,000 | ||||||
|
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| Temperature °F (°C) | Ohms | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 212 (100) | 177 | ||||||||
| 194 (90) | 241 | ||||||||
| 176 (80) | 332 | ||||||||
| 158 (70) | 467 | ||||||||
| 140 (60) | 667 | ||||||||
| 122 (50) | 973 | ||||||||
| 113 (45) | 1188 | ||||||||
| 104 (40) | 1459 | ||||||||
| 95 (35) | 1802 | ||||||||
| 86 (30) | 2238 | ||||||||
| 77 (25) | 2796 | ||||||||
| 68 (20) | 3520 | ||||||||
| 59 (15) | 4450 | ||||||||
| 50 (10) | 5670 | ||||||||
| 41 (5) | 7280 | ||||||||
| 32 (0) | 9420 | ||||||||
| 23 (-5) | 12,300 | ||||||||
| 14 (-10) | 16,180 | ||||||||
| 5 (-15) | 21,450 | ||||||||
| -4 (-20) | 28,680 | ||||||||
| -22 (-30) | 52,700 | ||||||||
| -40 (-40) | 100,700 | ||||||||
|
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MAP SENSOR VOLTAGE (1.9L) (1)
| Altitude Feet | Volts | ||
|---|---|---|---|
| Below 1000 | 3.8-5.5 | ||
| 1000-2000 | 3.6-5.3 | ||
| 2000-3000 | 3.5-5.1 | ||
| 3000-4000 | 3.3-5.0 | ||
| 4000-5000 | 3.2-4.8 | ||
| 5000-6000 | 3.0-4.6 | ||
| 6000-7000 | 2.9-4.5 | ||
| 7000-8000 | 2.8-4.3 | ||
| 8000-9000 | 2.6-4.2 | ||
| 9000-10,000 | 2.5-4.0 | ||
|
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OIL PRESSURE SENSOR RESISTANCE (5.7L VIN G - CORVETTE) (1)
| Temperature °F (°C) | Ohms | ||
|---|---|---|---|
| 212 (100) | 177 | ||
| 194 (90) | 241 | ||
| 176 (80) | 332 | ||
| 158 (70) | 467 | ||
| 140 (60) | 667 | ||
| 122 (50) | 973 | ||
| 113 (45) | 1188 | ||
| 104 (40) | 1459 | ||
| 95 (35) | 1802 | ||
| 86 (30) | 2238 | ||
| 77 (25) | 2796 | ||
| 68 (20) | 3520 | ||
| 59 (15) | 4450 | ||
| 50 (10) | 5670 | ||
| 41 (5) | 7280 | ||
| 32 (0) | 9420 | ||
| 23 (-5) | 12,300 | ||
| 14 (-10) | 16,180 | ||
| 5 (-15) | 21,450 | ||
| -4 (-20) | 28,680 | ||
| -22 (-30) | 52,700 | ||
| -40 (-40) | 100,700 | ||
|
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OXYGEN SENSOR VOLTAGE (1)
| Condition | Volts | |||
|---|---|---|---|---|
| Except Metro, Firefly (Canadian) & Prizm | ||||
| Lean | 0.1 | |||
| Rich | 1.0 | |||
| Metro, Firefly (Canadian) & Prizm | ||||
| Lean | 100 mV | |||
| Rich | 900 mV | |||
|
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Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.