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.
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HOMESERVICE MANUALSCHEVROLET1969CAMARO BASE, 2D CONVERTIBLE, 6.5L ENG, NOT AVAILABLE TRANSREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSAUTOMATIC TEMPERATURE CONTROLADJUSTMENTSENSOR TESTING
1969 Chevrolet Camaro Base, 2D Convertible, 6.5L Eng, Not Available Trans
Sensor Testing
1969 Chevrolet Camaro Base, 2D Convertible, 6.5L Eng, Not Available TransSECTION Sensor Testing
With Tester J-22368 installed according to instructions, run engine at a fast idle, set Comfortron control lever to HI-FRONT, set Rocker switch to MANUAL, and set Manual Control Knob to 150 ohms on scale, then proceed as follows:
- Set the Tester Voltage switch to AMPLIFIER, and rotate Comfortron Temperature Dial until the Tester voltmeter reads 6.5 volts and Comfortron Temperature Dial should read 75°F. If it does not, see ADJUSTMENT for instructions to set the dial.
- Run car at least 10 minutes with windows and doors closed, then switch Rocker switch to AUTOMATIC. Voltage reading should remain 6.5, with a change in voltage indicating a bad sensor.
- If a bad sensor is indicated, check each sensor while it is disconnected from the system, using an ohmmeter. Approximate resistance of each sensor at 75°F. should be as follows:
| In-Car Sensor | 50-75 ohms |
| Ambient Sensor | 55 ohms or less |
| Feedback Potentiometer | 70 ohms (approx.) with "O" vacuum in servo. 15 ohms (approx.) with 10 or more inches of vacuum on servo. |
| Master Delay Thermistor | 70 ohms |
| High Blower Delay Thermistor | 70 ohms |
NOTE:
See SYSTEM CHECKS chart for details of Feedback Potentiometer check.
RENDER: 1.0x
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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.