Throttle Body - Erratic Operation/Chamber Deposits
Classification: EF&EC93-002aSection: Engine Fuel & Control
Models: 1993 J30
Reference:
TECHNICAL BULLETIN ITB93-062a
Date:
January 25, 1995
1993 J30 DRIVEABILITY INCIDENTS CAUSED BY THROTTLE CHAMBER DEPOSITS.
This Bulletin contains amended claim information.
APPLIED MODEL:
1993 Infiniti J30
SERVICE INFORMATION
Some 1993 J30 vehicles may exhibit the following driveability incidents:
^ Idle speed fluctuation
^ Incorrect idle speed
^ Accelerator Pedal difficult to push.
^ Difficulty accelerating smoothly from a stop (throttle/vehicle "jumpy")
These symptoms may be the the result of throttle chamber deposits. Use the following procedure to check for, clean, and prevent deposits from recurring in the future.
SERVICE PROCEDURE
1. Check for throttle chamber deposits:
Remove the air inlet ducts from the throttle chambers. Open the throttle valve and check for deposits with a light. If deposits are found, remove them with genuine Nissan spray carburetor cleaner (P/N 999MP-A3000).
2. Set the base idle speed.
3. Check the engine oil level and correct as necessary.
It is important that the engine oil is not overfilled (above the "H" mark). Maintaining the proper engine oil level(not overfilled) will help prevent recurrence of these incidents.
If the vehicle still exhibits the driveability incidents after following these steps, consult the Service Manual for further assistance.
CLAIM INFORMATION