Table of Contents
How do I know if my coolant bypass valve is bad?
Usually a bad or failing coolant bypass tube will produce a few symptoms that can alert the driver of a potential problem that should be serviced.
- Low coolant levels. One of the first signs of a potential problem with the coolant bypass tube is low coolant levels.
- Visible coolant leaks.
- Engine overheating.
What does engine coolant bypass valve do?
This aftermarket-exclusive valve maintains a continuous flow of coolant through the engine block. Symptoms of a failed coolant bypass valve include small leaks and internal electronic failure, resulting in illumination of the check engine light. This part restores optimal vehicle performance.
What is thermostat bypass valve?
In previous chapters, we discussed how thermostats worked to control the flow of coolant between the engine and the radiator. The solution to is a bypass passage which allows coolant to flow around the engine and back to the pump inlet whenever the thermostat is closed.
How much does it cost to replace coolant bypass valve?
Heater Control Valve Replacement Cost – RepairPal Estimate. Labor costs are estimated between $83 and $105 while parts are priced at $97. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.
What does P26B7 mean?
A code P26B7 in a 2013 Ford Escape means the power control module (PCM) has detected an issue with the Coolant Bypass Solenoid, which is located below and in front of the throttle body, on the drivers side of the engine.
What is the code P26B7?
A code P26B7 in a 2013 Ford Escape means the power control module (PCM) has detected an issue with the Coolant Bypass Solenoid, which is located below and in front of the throttle body, on the drivers side of the engine. This is for when the engine is cold and thermostat is closed, to lower the potential for hot spots.
How do bypass thermostats differ from non bypass ones?
The primary valve operates exactly the same as the non-bypass thermostat and opens allowing coolant to flow to the radiator when the engine is at normal operating temperature. A vehicle fitted with a bypass style thermostat must always have the correct bypass thermostat fitted.
What happens when a coolant bypass valve fails?
When you turn of the ignition, the vaccuum tube is no longer active and the valve is turned on by default. If you open the top of a faulty Bypass Valve (which is easy to do) you will see that there is a rubber diaphragm with a pin in centre that is activated (lifted) by the vacuum. This opens up passage of hot coolant to the heater.
What are the symptoms of a bad heater bypass tube?
One symptom of an issue with heater bypass tube is a coolant smell from the engine bay. Most heater bypass tubes use an o-ring or gasket to seal the bypass tube to the engine. If the o-ring or gasket wear out or tear, coolant will begin to leak from the bypass tube. This may produce a coolant smell from the vehicle’s engine bay.
What are the symptoms of a bad coolant temperature sensor?
Here is a more detailed list of the common symptoms of a bad coolant temperature sensor. One of the first sign of all coolant temprature sensor symptoms you will probably notice is that the check engine light will activate on your dashboard.
What are the symptoms of a bad air diverter valve?
Symptoms of a Bad or Failing Air Diverter Valve. 1 1. Car is running rougher than usual. Among the most noticeable signs that the air diverter valve is damaged is your car running sluggishly. The 2 2. Gas mileage is suffering. 3 3. Check Engine Light is on.