What Is a Vacuum Solenoid?

Answer Vacuum solenoids are used in internal combustion engines to improve fuel efficiency and play a part in reducing the carbon footprint of the vehicle. They are also known as "switching solenoids" and... Read More »

Top Q&A For: What Is a Vacuum Solenoid

1989 jimmy starter making vacuum sound. When we jump the solenoid the starter makes only a whirling noise much like a vacuum cleaner. Any ideas on what is causing this?

IF you are jumping the right set of terminals, then: The solenoid is failing to 'push' the starter (pinion) into place and engaging the flywheel. The solenoid needs to be replaced, although the pin... Read More »

How to Test an EGR Vacuum Solenoid?

Your vehicles EGR valve is a crucial component in the vehicle's exhaust system. The EGR valve controls the amount of exhaust reintroduced into the engine, thus reducing the vehicles emissions. A fa... Read More »

How an EGR Vacuum Solenoid Works?

Vertical ridges in fingernails are common, and sometimes unexplainable. Unlike horizontal ridges and discoloration, vertical ridges do not indicate any serious problems to the nail or nail bed. The... Read More »

What is the minimum vacuum pressure a vacuum pump should have for a vacuum bag repair?

Answer yesThis answer is not correct. Please note accompanying discussion and the associated hyperlink to a science fair study. Dea. Steve Johnson