IR P185WIR & XP185WIR Troubleshooting: Engine Temperature Lamp Stays On
If the engine temperature warning lamp on your Ingersoll Rand P185WIR or XP185WIR lights up and stays on, don’t ignore it. High temperatures can lead to serious engine damage if not addressed quickly. Here’s how to diagnose the most common causes and fix the problem before it gets worse.
Common Causes of Engine Temperature Lamp Staying On
- Broken engine fan belt: Without the fan turning, the engine can’t cool itself properly and temperatures will spike fast.
- Malfunctioning circuit board: A faulty board can send a false high-temperature signal even when temps are normal.
- Defective engine belt break switch: If the switch that detects belt failure malfunctions, it can trigger a warning lamp even if the belt is intact.
- Ambient temperature too high: Extremely hot working conditions can push the cooling system beyond its limits.
- Dirty operating conditions: Dust, dirt, and debris clog cooling fins and restrict airflow, raising engine temps.
- Dirty oil cooler: A clogged cooler can’t dissipate heat effectively, causing oil and engine temperatures to climb.
- Compressor out of level (>15 degrees): Poor leveling affects oil circulation and cooling efficiency, increasing heat buildup.
- Operating pressure too high: Running above recommended pressure places extra load on the engine and cooling system.
Recommended Fixes
- Inspect and replace broken or worn engine fan belts immediately.
- Inspect and replace a malfunctioning circuit board if it’s sending false signals.
- Test and replace a defective belt break switch if it’s stuck or broken.
- In hot climates, improve ventilation or reduce load to help the cooling system keep up.
- Clean around the compressor to remove dust and debris buildup, especially around cooling fins and intakes.
- Inspect and clean the oil cooler to restore proper heat transfer.
- Always operate the compressor on level ground within 15 degrees side-to-side and front-to-back.
- Verify and adjust operating pressure to prevent overloading the engine and cooling system.
Wrap-Up
The engine temperature lamp is there to protect your equipment. If it stays on, it’s your signal to act quickly. A few simple checks can keep your P185WIR or XP185WIR running cool and avoid costly downtime or engine repairs.