Honda CR-V: Emissions Controls

The burning of gasoline in your vehicle’s engine produces several byproducts.

Some of these are carbon monoxide (CO), oxides of nitrogen (NOx), and hydrocarbons (HC).

Gasoline evaporating from the tank also produces hydrocarbons. Controlling the production of NOx, CO, and HC is important to the environment.

Under certain conditions of sunlight and climate, NOx and HC react to form photochemical ‘‘smog.’’ Carbon monoxide does not contribute to smog creation, but it is a poisonous gas.

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 The Clean Air Act

The United States Clean Air Act* sets standards for automobile emissions. It also requires that automobile manufacturers explain to owners how their emissions controls work and what to do to

 Crankcase Emissions Control System

Your vehicle has a positive crankcase ventilation system. This keeps gasses that build up in the engine’s crankcase from going into the atmosphere. The positive crankcase ventilation valve

 Evaporative Emissions Control System

As gasoline evaporates in the fuel tank, an evaporative emissions control canister filled with charcoal adsorbs the vapor. It is stored in this canister while the engine is off. After the en

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 Charging System Indicator Circuit Troubleshooting

1. Turn the ignition switch ON (II). Does the charging system indicator come on? YES-Go to step 2. NO-Go to step 14. 2. Start the engine. Hold the engine speed at 2,000 rpm for 1 minute. Does the charging system indicator go off? YES-Charging system indicator circuit is OK. Go to the alternator

 Transmission Housing

Housing and Shaft Assembly Removal NOTE: The illustration shows the 4WD transmission; the 2WD does not have the transfer mechanism. 1. Remove the ATF feed pipe (A) from the idler gear shaft, and the ATF lubrication pipe (B) from the transmission housing. 2. Remove the shift solenoid valve cover (

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