91 lincoln towncar egr problem

[messingerbreed]

How do you test the evaporative emissions control valve? I have changed the egr valve and the tubing to the exhaust. Still getting control valve malfunction code. Any ideas?

[Kitt1993]

What are the codes? Did you check your DPFE sensor yet? And check for vacuum leaks?

[junk yard doggie]

Yep DPFE valve stands for delta pressure feed back exhaust.


http://cmasalvage.com/ltc_91_94_dpfe.jpg

[messingerbreed]

Originally Posted by Kitt1993

What are the codes? Did you check your DPFE sensor yet? And check for vacuum leaks?

How do you check the DPFE? I have checked for leaks and found none. This thing is driving me nuts!

[messingerbreed]

Originally Posted by Kitt1993

What are the codes? Did you check your DPFE sensor yet? And check for vacuum leaks?

I also changed the control valve....no change.

[Kitt1993]

Try this, spray carb cleaner around the 2 rubber hoses that come from the EGR pipe to the DPFE sensor and see if that make a change in the engines idle