Egr Valve

#1

How do you find out if the egr valve or the electronic sensor on top of the egr valve is bad 94 f-250 351 motor

#2

Get the engine up to operating temperature and then turn it off. Remove the vacuum hose from the EGR valve and plug it, and connect a hand vacuum pump to the EGR valve. At the tail pipe, clamp on a socket or something simular that almost completely blocks the tail pipe. Start the engine and apply a vacuum to the EGR valve. If the EGR valve is good, the engine will start to stumble and/or stall when the vacuum is applied to the EGR valve.

Tester

#3

Reading the code might just tell you that it’s the sensor. It might not too. The test mention previously is good too.