BIG WOOD
The Timminator
- Joined
- Feb 4, 2016
- Messages
- 14,481
- Name
- Matt w.
And she made the creators of this machine look really bad
Thanks — the Hyundai 1.6L (G4 series) engine used in the Prochem Everest 650 has some specific reasons its oil pressure switches tend to fail more often than they do in normal car applications. These units run under conditions Hyundai never originally designed them for.
Why Oil Pressure Switches Go Bad on the Hyundai 1.6L in a Prochem Everest 650
1. Constant High RPM Operation (Most Common Cause)
Truckmount units like the Everest 650 run the Hyundai 1.6L at sustained high RPM for long periods (often 2–4 hours straight).
This causes:
Higher oil temperature
The oil pressure switch simply wears out much faster than it would in a car.
L 2. Extreme Heat Inside the Truckmount Enclosure
Unlike a car, a truckmount engine sits inside a partially enclosed box with:
Much less airflow
This “hot soak” environment cooks the switch, making the plastic body or rubber diaphragm deteriorate.
3. Vibration From the Blower and Pump
The vibration level in a truckmount is much higher than in a car:
Roots blower
Everest units sometimes run higher oil pressure due to:
Higher sustained RPM
5. Oil Contamination From Long Run Sessions
If oil is not changed frequently enough (which is easy to forget on truckmounts), heat breaks it down and sludge forms.
Sludge or carbon in the oil passage can:
Clog the sensor
Many replacement sensors are designed for normal passenger car duty.
Truckmount conditions are harsher, so cheap switches fail quickly.
The Everest 650 benefits from:
OEM Hyundai switches
Good news:
This is one of the most common failures on Everest 650 units, and it does not usually mean the engine actually has a low oil pressure problem.
Might be why Sammy makes his radiator fan suck heat out of the truck instead of pulling it in the truck.
Common sense. What most of these manufacturers are lacking. I hate learning this stuff the hard way.
Thanks — the Hyundai 1.6L (G4 series) engine used in the Prochem Everest 650 has some specific reasons its oil pressure switches tend to fail more often than they do in normal car applications. These units run under conditions Hyundai never originally designed them for.
Why Oil Pressure Switches Go Bad on the Hyundai 1.6L in a Prochem Everest 650
1. Constant High RPM Operation (Most Common Cause)
Truckmount units like the Everest 650 run the Hyundai 1.6L at sustained high RPM for long periods (often 2–4 hours straight).
This causes:
Higher oil temperature
- Higher engine bay temperature
- More pressure spikes
- Faster diaphragm fatigue inside the switch
The oil pressure switch simply wears out much faster than it would in a car.
L 2. Extreme Heat Inside the Truckmount Enclosure
Unlike a car, a truckmount engine sits inside a partially enclosed box with:
Much less airflow
- Hot exhaust and blower components nearby
- Radiant heat buildup
This “hot soak” environment cooks the switch, making the plastic body or rubber diaphragm deteriorate.
3. Vibration From the Blower and Pump
The vibration level in a truckmount is much higher than in a car:
Roots blower
- High-pressure pump
- Coupling harmonics
- This shakes the oil pressure switch and can crack:
- The internal electrical contacts
- The thread base
Everest units sometimes run higher oil pressure due to:
Higher sustained RPM
- Slightly thicker oils used in commercial machines
- Relief valve behavior under heat
5. Oil Contamination From Long Run Sessions
If oil is not changed frequently enough (which is easy to forget on truckmounts), heat breaks it down and sludge forms.
Sludge or carbon in the oil passage can:
Clog the sensor
- Damage the diaphragm
- Cause false low-pressure signals
Many replacement sensors are designed for normal passenger car duty.
Truckmount conditions are harsher, so cheap switches fail quickly.
The Everest 650 benefits from:
OEM Hyundai switches
- Delphi or NTK equivalents
(These handle heat and vibration better
- 7. Connector Oil Intrusion
- These Hyundai switches are known to fail through the electrical connector, allowing oil to wick into the harness.
Good news:
This is one of the most common failures on Everest 650 units, and it does not usually mean the engine actually has a low oil pressure problem.
Might be why Sammy makes his radiator fan suck heat out of the truck instead of pulling it in the truck.
Common sense. What most of these manufacturers are lacking. I hate learning this stuff the hard way.
