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91 lincoln towncar egr problem


messingerbreed
04-03-2010, 04:42 PM
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
04-03-2010, 09:11 PM
What are the codes? Did you check your DPFE sensor yet? And check for vacuum leaks?
junk yard doggie
04-04-2010, 08:45 AM
Yep DPFE valve stands for delta pressure feed back exhaust.


http://cmasalvage.com/ltc_91_94_dpfe.jpg (http://cmasalvage.com/ltc_91_94_dpfe.jpg)
messingerbreed
04-05-2010, 01:08 PM
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.:mad: This thing is driving me nuts!
messingerbreed
04-05-2010, 01:10 PM
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
04-05-2010, 01:58 PM
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

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