Do you have a question about the VNL and is the answer not in the manual?
Questions and answers
Richard LaBiche
March 24, 2025
How to set High idle
1 comments:
Mr. Anderson
March 24, 2025
To set high idle on a Volvo VNL, follow these steps:
1. Set the cruise control switch to the ON position. 2. Depress and hold the foot brake pedal throughout the process. 3. Move the cruise control switch to the RESUME position and hold it for four seconds, then release it. The engine speed will drop to the default low idle. 4. Increase idle speed by pressing the SET+ switch. Each press increases the speed by approximately 10 RPM (up to the engine manufacturer’s limit). 5. Decrease idle speed by pressing the SET- switch. Each press decreases the speed by approximately 10 RPM (but not below the engine’s low idle setting). 6. Holding the SET+ or SET- switch will ramp the engine speed up or down continuously.
Ensure the parking brakes are applied and the transmission is in neutral before starting the procedure to prevent unexpected movement.
This answer is automatically generated
Lauren
March 13, 2025
Hard idle
1 comments:
Mr. Anderson
May 14, 2025
The context does not directly state the cause of hard idle in a Volvo VNL. However, it mentions that idling produces sulfuric acid, which can damage engine components like bearings, rings, and valve stems. This damage could potentially contribute to hard idle. Therefore, prolonged or excessive idling may lead to engine wear that causes hard idle.
Need help?
Do you have a question about the VNL and is the answer not in the manual?
Questions and answers
How to set High idle
To set high idle on a Volvo VNL, follow these steps:
1. Set the cruise control switch to the ON position.
2. Depress and hold the foot brake pedal throughout the process.
3. Move the cruise control switch to the RESUME position and hold it for four seconds, then release it. The engine speed will drop to the default low idle.
4. Increase idle speed by pressing the SET+ switch. Each press increases the speed by approximately 10 RPM (up to the engine manufacturer’s limit).
5. Decrease idle speed by pressing the SET- switch. Each press decreases the speed by approximately 10 RPM (but not below the engine’s low idle setting).
6. Holding the SET+ or SET- switch will ramp the engine speed up or down continuously.
Ensure the parking brakes are applied and the transmission is in neutral before starting the procedure to prevent unexpected movement.
This answer is automatically generated
Hard idle
The context does not directly state the cause of hard idle in a Volvo VNL. However, it mentions that idling produces sulfuric acid, which can damage engine components like bearings, rings, and valve stems. This damage could potentially contribute to hard idle. Therefore, prolonged or excessive idling may lead to engine wear that causes hard idle.
This answer is automatically generated