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.
Feedback Carburetor System: Description
This electronically controlled carburetor improves driveability and fuel economy while reducing emissions. This system is offered exclusively on Sentra models that are equipped with the 1.6L (E16S) type engines. System components for California vehicles include an Electronic Control Unit (ECU), crankshaft angle sensor, air temperature sensor, coolant temperature sensor, exhaust gas sensor, throttle valve switch, Neutral and clutch switches (M/T), inhibitor switch (A/T), vacuum sensor, starter switch and vehicle speed sensor. Federal vehicles use all these components as well as a battery voltage sensor, barometric pressure sensor, air conditioner switch and a power steering pressure switch.
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.
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