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How to Replace an Exhaust Gas Recirculation (EGR) Vacuum Modulator
The EGR vacuum modulator meters the EGR valve in some car systems. Some signs of a failing EGR vacuum modulator include stalling and a rough idle.

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AC not working correctly
Hi. When air comes out of the vents at uneven temperatures, the blend door actuator is usually at fault. Either debris buildup is blocking the door from moving or the electronic actuator on the door itself is malfunctioning. A technician...
Fans keep running
Hello. I would suspect that the coolant temperature sensor is faulty. The coolant temperature sensor is used to monitor the temperature of the coolant. If it is bad it can trick the ECU into thinking it is running hot. The...
Could i have caused an engine modulation?
We have all at one time or another crossed spark plug wires. To date, it has not caused a problem other than the misfire from the crossed wires. So rest assured, it is highly unlikely that this caused any lasting...

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