Vehicle Fails State Inspection And Maintenance Test (92-036)

Publication date: 1992-11-10
Reference number: 92-036

VEHICLE FAILS STATE INSPECTION AND MAINTENANCE TEST

TECHNICAL SERVICE BULLETIN

Reference Number(s): 92-036, Date of Issue: November 10, 1992

VEHICLE FAILS STATE INSPECTION AND MAINTENANCE EMISSION TEST

Model(s): All Acura Models Though 1993

Group: General Information

Bulletin No.: 92-036

Date: November 10, 1992

SYMPTOM

Some vehicles with properly functioning emission control systems may fail certain states tailpipe emissions test.

PROBABLE CAUSE

The following conditions may cause the car to exceed the state standards:

The vehicle is not fully warmed-up.
The idle period is too long.
The engine is shut-off, hot-soaked and restarted.
The understood ambient temperature is very high.

NOTE: All Acura automobiles do meet the U.S. E.P.A. and California emission standards when tested under the E.P.A. certification test procedure.

CORRECTIVE ACTION

Do the following before conducting the tailpipe emissions test.

The emissions test should be performed with the car at normal operating temperature. Before testing, be sure the car has been driven for several miles at 25 mph or above, and test the car as soon as possible after driving.

Keep the engine at operating temperature (the cooling fan has cycled on and off twice).
To normalize the system, raise the engine speed to above 3500 rpm and allow the throttle to snap closed to idle.

WARRANTY CLAIM INFORMATION

None: Information only.