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.
1994 Eagle Vision V6-201 3.3LFACTORY OEM SERVICE PROCEDURE
Idle/Cruise
This is a CLOSED LOOP mode.
With engine at idle or cruise, at operating temperature, the PCM receives inputs from:
- Air Conditioning Control Position
- Battery voltage
- Camshaft position (CMP) sensor
- Engine coolant temperature (ECT) sensor
- Manifold absolute pressure (MAP) sensor
- Intake air temperature (IAT) sensor
- Crankshaft position (CKP) sensor
- Throttle position sensor (TPS)
- Heated oxygen sensor (O2S)
Based on these inputs the PCM will:
- Apply voltage to the injectors. The PCM then controls injection sequence and pulse width by switching individual injector ground paths on and off.
- Monitor oxygen sensor and fine tune air/fuel ratio by varying injector pulse width.
- Adjust engine idle speed through the IAC motor.
- Adjust ignition timing.
- Under certain conditions, enter a variable idle speed strategy.
With engine at idle or cruise, at operating temperature, the PCM receives inputs from:
- Air Conditioning Control Position
- Battery voltage
- Camshaft position (CMP) sensor
- Engine coolant temperature (ECT) sensor
- Manifold absolute pressure (MAP) sensor
- Intake air temperature (IAT) sensor
- Crankshaft position (CKP) sensor
- Throttle position sensor (TPS)
- Heated oxygen sensor (O2S)
Based on these inputs the PCM will:
- Apply voltage to the injectors. The PCM then controls injection sequence and pulse width by switching individual injector ground paths on and off.
- Monitor oxygen sensor and fine tune air/fuel ratio by varying injector pulse width.
- Adjust engine idle speed through the IAC motor.
- Adjust ignition timing.
- Under certain conditions, enter a variable idle speed strategy.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.