Re: Re: EGR Problem,1991 Acura Integra

Hello!  I’m having a very similar problem this gentleman described. My EGR Valve on the motor has been replaced, but there’s no vacuum pull happening. 

All I know is that there’s a vacuum line running from the EGR Valve to the unit in the middle. The hose is intact.  

I was told by a technician that the EGR solenoid needs replacing, showed this picture to a parts guy at the Acura dealer and he said the unit to be replaced is called a frequency solenoid valve. I’m not exactly sure what the accurate name is of the part(s) to be replaced 

It’s the middle unit behind control box #2, pictured in the photo. Is this what you’re referring to as the valve lift solenoid? Or is it what you’re calling the control solenoid?

Am I trying to replace both?

I’ve got high NOX emissions due to no EGR vacuum pull. Thanks for any help you might be able to provide!

David
https://www.motorsforum.com/img/5ba
https://www.motorsforum.com/img/5bc

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