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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...
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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...
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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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How do you scan the GEM module in a 1996 Ford Explorer?
The GEM module can only be scanned using a scanner capable of accessing the GEM module through the OBD2 data link. The scanners that the Ford dealer uses can access the module. There are aftermarket scanners on the market than...
Question
Transmission modulator valve is not working.
Hi there. The modulator valve is located on the back of the transmission on the passenger side. The valve is vacuum controlled. So, before you replace the valve, be sure to check the vacuum line from the engine to the...
Question
Abs module is no good. I have another one from junk yard with the same year and FWD and engine. Will it work?
Hi there. As long as the ABS module is the same design and has the same ports on it then it will work just fine on your vehicle. Be sure to bleed all of the brake lines after replacing the...
Question
When replacing the Longitudinal Torque Module with a new, OEM part do I need to have it programmed or re-calibrated after?
The new torque module are programmed and they have software already installed. This is like a computer that is ready for use that has software on it, but when it is turned on it prompts you to set up the...

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