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.
1995 Eagle Vision V6-201 3.3LFACTORY OEM SERVICE PROCEDURE
Powertrain Control Module Response Test
NOTE: A four gas analyzer will be needed to perform this test.
NOTE: This test should be performed only after sensor functional test, and sensor heating element tests are passed.
NOTE: When performing this test it is important that no part of your body contact the vehicle body, as inaccurate test results may result.
CAUTION: NEVER apply voltage directly to any computer sensor wire.
1. Make sure the vehicle is at normal operating temperature. Run the engine at 2500 rpm for 3 minutes with the transmission in PARK (A/T) or NEUTRAL (M/T).
2. With engine OFF, disconnect oxygen sensor connector and connect a jumper lead to the computers oxygen sensor return wire, terminal 2 of the electrical connector.
3. Start engine and run at 2500 rpm for 1 minute with the transmission in PARK (A/T) or NEUTRAL (M/T).
4. Let engine idle.
5. Simulate a rich command (lean condition), by touching one hand to jumper wire and other hand to battery negative, for 10 to 20 seconds. HC and O2 readings should begin to increase.
6. Simulate a lean command (rich condition), by touching one hand to jumper wire and other hand to battery positive, for 10 to 20 seconds. HC and O2 readings should begin to decrease, and CO should begin to increase.
7. If computer system fails to respond to these artificial commands, further testing of the oxygen sensor circuit and/or computerized engine control system will be necessary.
NOTE: This test should be performed only after sensor functional test, and sensor heating element tests are passed.
NOTE: When performing this test it is important that no part of your body contact the vehicle body, as inaccurate test results may result.
CAUTION: NEVER apply voltage directly to any computer sensor wire.
1. Make sure the vehicle is at normal operating temperature. Run the engine at 2500 rpm for 3 minutes with the transmission in PARK (A/T) or NEUTRAL (M/T).
2. With engine OFF, disconnect oxygen sensor connector and connect a jumper lead to the computers oxygen sensor return wire, terminal 2 of the electrical connector.
3. Start engine and run at 2500 rpm for 1 minute with the transmission in PARK (A/T) or NEUTRAL (M/T).
4. Let engine idle.
5. Simulate a rich command (lean condition), by touching one hand to jumper wire and other hand to battery negative, for 10 to 20 seconds. HC and O2 readings should begin to increase.
6. Simulate a lean command (rich condition), by touching one hand to jumper wire and other hand to battery positive, for 10 to 20 seconds. HC and O2 readings should begin to decrease, and CO should begin to increase.
7. If computer system fails to respond to these artificial commands, further testing of the oxygen sensor circuit and/or computerized engine control system will be necessary.
Factory Service Tools
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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.