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Do you have a question about the 1989 Prelude and is the answer not in the manual?

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Eugeniusz Pilch
January 24, 2025

Jak uregulowac wolne obroty silnika

3 comments:
Eugeniusz Pilch
January 24, 2025

@Eugeniusz Pilch

Eugeniusz Pilch
January 24, 2025

Jak sterowac wolne obroty silnika

Mr. Anderson
February 10, 2025

To adjust the idle speed on a 1989 Honda Prelude, follow these steps:

1. Warm Up the Engine: Start the engine and let it warm up to normal operating temperature.

2. Turn Off Electrical Loads: Ensure all accessories like lights, air conditioning, and radio are turned off.

3. Locate the Idle Adjustment Screw: The idle speed adjustment screw is on the throttle body, near the throttle cable.

4. Check Idle Speed: Use a tachometer to check the current idle speed. The factory specification for idle speed is typically around 700-800 RPM (check the under-hood label for exact specs).

5. Adjust the Idle Speed:
- Turn the screw clockwise to decrease idle speed.
- Turn the screw counterclockwise to increase idle speed.

6. Recheck RPM: After making adjustments, check the tachometer to ensure the idle is within the correct range.

7. Reset the ECU (If Necessary): If the idle fluctuates, disconnect the battery for a few minutes, then reconnect and restart the engine.

8. Test Drive: Ensure the idle remains stable under different conditions.

If the idle remains unstable, check for vacuum leaks, a faulty idle air control valve, or throttle body issues.

This answer is automatically generated

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