Mechanics

EGR SYSTEM CEL CODE 335

1994 Ford Explorer • 170,000 miles

The problems started recently, and the Explorer seemed like it was bogging down a bit. It was acting like a bad EGR valve. At the time, I didn't have the money to fix it, so I left it, and suffered with the annoying CHECK ENGINE light on. I checked the codes the other day, and got Insufficient EGR Flow detected. I have replaced the DPFE, the EGR Valve, and the rubber hoses that connect to the DPFE. I have verified that all the hoses are in good condition and connected. Could the EGR vacuum solenoid be my problem?
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Ranger812572
March 22, 2012.




Check if its getting vacuum

Rasmataz
Mar 22, 2012.
And if its not getting vacuum?

Tiny
Ranger812572
Mar 23, 2012.
It suppose to have vacuum if not check from the solenoid to the intake manifold

Rasmataz
Mar 23, 2012.
I have replaced the egr vacuum solenoid and reset the codes. It still comes up. I know its getting vaccum, because I pulled the vacuum plug off the egr and put my finger over it while holding the throttle at about 1500 rpm (a guess). I could feel it pulling. Any ideas?
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Tiny
Ranger812572
Mar 24, 2012.
The computer controls the solenoid when to open and close-

Rasmataz
Mar 24, 2012.
I replaced under warranty the EGR, which didn't fix it, but the warrantied DPFE did.

Tiny
Ranger812572
Mar 26, 2012.
Lesson learned here with the DPFE sensor-Thanks

Rasmataz
Mar 26, 2012.

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