When to replace the thermostat on a Mercedes E350?
The sensor is typically found on 2008,2009,2010 and newer models such as C300 and E350. Remove the thermostat from the engine block. If the thermostat doesn’t come loose, you may need to pry it away using a flat screwdriver. Install the new thermostat in reverse order. Ensure that you have a new gasket for your thermostat.
What’s the fault code on my Mercedes thermostat?
In most cases you will get a P0128 – Coolant temperature below thermostat regulating temperature fault code. Any of these Best Selling OBD II code readers will be able to scan your Mercedes-Benz. This article shows you how to use an OBD II scanner to read the check engine / ECU fault code.
How do you replace a Mercedes thermostat in reverse order?
Install the new thermostat in reverse order. Ensure that you have a new gasket for your thermostat. The old gasket should be removed and discarded. Tighten the two bolts and reconnect the radiator hose. Do not overtighten the two bolts. If you have a torque wrench, you can tighten these two bolts to approximately 10Nm.
How do you replace a thermostat in a car?
Unplug the electrical connector from the sensor if your car has one. The sensor is typically found on 2008,2009,2010 and newer models such as C300 and E350. Remove the thermostat from the engine block. If the thermostat doesn’t come loose, you may need to pry it away using a flat screwdriver. Install the new thermostat in reverse order.
The sensor is typically found on 2008,2009,2010 and newer models such as C300 and E350. Remove the thermostat from the engine block. If the thermostat doesn’t come loose, you may need to pry it away using a flat screwdriver. Install the new thermostat in reverse order. Ensure that you have a new gasket for your thermostat.
In most cases you will get a P0128 – Coolant temperature below thermostat regulating temperature fault code. Any of these Best Selling OBD II code readers will be able to scan your Mercedes-Benz. This article shows you how to use an OBD II scanner to read the check engine / ECU fault code.
Install the new thermostat in reverse order. Ensure that you have a new gasket for your thermostat. The old gasket should be removed and discarded. Tighten the two bolts and reconnect the radiator hose. Do not overtighten the two bolts. If you have a torque wrench, you can tighten these two bolts to approximately 10Nm.
How do you remove a thermostat from a car?
Loosen the radiator hose clamp. Use theE-Torx socket to remove the two thermostat bolts. Unplug the electrical connector from the sensor if your car has one. The sensor is typically found on 2008,2009,2010 and newer models such as C300 and E350.
Where is the thermostat on a 1990 Mercedes 420SEL?
What is the procedure for replacing the thermostat on a 1990 Mercedes 420SEL? The thermostat on this vehicle is located behind the housing where the lower radiator hose is connected. The simplest way to find the thermostat is to follow the lower radiator hose to the motor.
Why is my engine light not working after replacing the thermostat?
This can be caused by a defective coolant sensor, radiator partly clogged, fans not working, thermostat or internal engine head problems. The system should be checked with an infrared temperature probe to see if the temperature of the engine is close to that the computer is seeing from the coolant sensor.
How do you find the thermostat on a Mercedes?
The simplest way to find the thermostat is to follow the lower radiator hose to the motor. Remove the hose and the three bolts that hold the thermostat housing to the water pump. The bolts are not easy to get to. The use of an extension and a swivel socket is advisable. The thermostat is now accessible and can be removed.
Where is the Jiggle pin on a Mercedes thermostat?
The thermostat is now accessible and can be removed. The new thermostat should have a jiggle pin on the flange. The pin should be at the 12 o’clock position when the thermostat is being installed. How should the coolant be drained from a 2006 Mercedes E550 when replacing the thermostat and what is the torque for bolting in the new unit?
This can be caused by a defective coolant sensor, radiator partly clogged, fans not working, thermostat or internal engine head problems. The system should be checked with an infrared temperature probe to see if the temperature of the engine is close to that the computer is seeing from the coolant sensor.
Why does my Mercedes thermostat keep overheating?
If the overheating occurs at all times, then a thermostat problem is likely. If the overheating is at highway speeds then radiator issues is the probable cause. If the problem is greatest when in traffic, the fans may be the cause.
How to replace the W124 coolant temperature sensor?
Using a 22mm deep socket (red arrow) really makes the job easier as it will fit right over the top of the sensor and down to the base nut, allowing easy removal. Place the deep socket over the sensor (red arrow) and remove the sensor from the housing. The sensor has a soft brass base (red arrow); do not over torque this sensor.
How does the temperature sensor work on a Mercedes Benz?
The single pin sensor sends its signal to the temperature gauge in the dash while the two-pin (or in some cases four-pin) sensor sends its signal to the fuel injection management system. Let the car cool so you don’t have to work around a hot engine.
What’s the coolant temp in a Mercedes 300D?
The coolant temperature remains steady at 95 degrees C. My ’83 300SD with the same engine indicates a steady 90 degrees C. The engine in the 300D does not appear to be running any hotter and has good power. Should I be concerned about this?
What should the coolant temperature be in a diesel car?
Diesel coolant temperature running hot. The temperature gauge climbed to 90 degrees, and after driving the car for a while, to a steady 95 degrees. I let the car sit overnight, added coolant to the reservoir to the proper level, and drove the car at various speeds for about 1/2 hour. The coolant temperature remains steady at 95 degrees C.
How can I find out what my engine coolant temperature is?
The best place to start in comparing your vehicle’s normal engine coolant temperature to see if it’s correct is with your thermostat setting. If you call your local auto parts store, like one of our partners below, they will be able to tell you what temperature your engine’s thermostat is designed to start opening.
What should the temp of the coolant be to boil over?
The temperature of the coolant can rise above 212F degrees because coolant is pressurized (NOT because the water is mixed with antifreeze). Boil-over won’t occur until about 265F degrees, because of the pressurization (15 or 16 psi). Generally, between 175 and 240 degrees F, depending on whether you are going downhill or uphill.
What is the fault code on a Mercedes Benz?
In this case, the Check Engine Light may come on. You can verify this by reading the ECU fault codes. In most cases you will get a P0128 – Coolant temperature below thermostat regulating temperature fault code. Any of these Best Selling OBD II code readers will be able to scan your Mercedes-Benz.
Why does my Mercedes Benz exhaust smell like diesel?
If its a blue white smoke with oil in then it will smell a little like a diesel truck and that would be valve stem or seal leaks as per your mechanic or severe blowby if the crank breather system is blocked up. I had several pleasant experiences when high mileage engines got well better after switching to synthetic oil.