Can be loose connections or the alternator is failing.
Weak battery, or weak alternator.
Check the wire to the sensor and be sure it is hooked up. If so remove it from the sending unit. Turn the ignition and have someone watch the gauge while you ground it to the engine. If it moves the sender is bad.
there is a low pressure swithc that closes at 5 psi and moves the oil pressure gauge on the insterment cluster. but when you get low on oil volume on the diesel the engine will quit running because it can nolonger fire the injectors. gas engine is has the same switch and cluster set up
i have a 1993 190E - my oil pressure gauge always sits on 3. ==New Answer Haedline == The oil pressure gauge actually moves but is related to several factors Engine Temprature Oil viscosity Engine speed. When you start you car the engine temperature is low the gauge goes to 3, after a long drive/travel and if your temp gets to 80C then with an engine speed of 750-800 RPM you oil pressure gauge will read about 1.5. if you rev. the engine the pressure gauge goes up to 3
Stuck open - no heat from heater, temp gauge hardly moves off of cold. Stuck closed - overheats engine, temp gauge quickly climbs to hot.
Pull over when it is safe to do so then shut the engine off. If you continue to drive the vehicle catastrophic damage to the engine can occur.
Pull over when it is safe to do so then shut the engine off. If you continue to drive the vehicle catastrophic damage to the engine can occur.
Pull over when it is safe to do so then shut the engine off. If you continue to drive the vehicle catastrophic damage to the engine can occur.
The gauge does not cause the heat; it only shows what it is.
as it works or moves it gets hot and eventually over heats. think of it as a human running the person eventually gets hot
Pull over when it is safe to do so then shut the engine off. If you continue to drive the vehicle catastrophic damage to the engine can occur.