...vacuum leak egr valve stuck on idle air conttol Tune up, air filter, fuel filter? When was the last time? can be over 50things. tune up's skipped is #1 cause on earth, egr stuck open. (if it has one, ...
...open to EGR Vacuum Regulator solenoid. EVR circuit to PCM open. EVR circuit to PCM shorted to PWR. Differential Pressure Feedback EGR (D.P.F. EGR) sensor pressure hoses both connected improperly. ...
...the EGR valve may be faulty. If the EGR valve is vacuum operated, check that the vacuum diaphragm of the valve is intact and not leaking. If the diaphragm won't hold a vacuum, replace the EGR
...vacuum diaphragm in the EGR valve. Late Models : The EGR volume control valve uses a step motor to control the flow rate of EGR from exhaust manifold. This motor has four winding phases. It operates ...
vacuum port it should stay open until you remove the finger from the hole, unless its an electronic egr which will have a connector to it or theres more than one port but im sure this year chevy has a
...open when engine vacuum is applied to the vacuum port. If you cannot find anything wrong, with the valve or passages, test the control solenoid that supplies vacuum to the EGR valve. It should click ...
...vacuum. You don't say what the make model and year are, so here is a generic reply. Sometimes the EGR valve is working but the sensor is not. In most cases the computer uses a pressure sensor to tell ...
...vacuum to the EGR valve nipple. If the idle speed drops more than 100 rpm with the vacuum applied and returns to normal after the vacuum is removed, the EGR valve is OK. If the idle speed does not ...
...open. Follow the vacuum line on the egr valve--does it go to a solenoid valve? If yes, apply 12 volts directly to the solenoid blades to see if it clicks open. If it doesn't click, replace the ...
...vacuum to the EGR valve nipple.If the idle speed drops more than 100 rpm with the vacuum applied and returns to normal after the vacuum is removed, the EGR valve is OK.If the idle speed does not drop ...
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