EGR SYSTEM CEL CODE 335

  • Tiny
  • ranger812572
  • 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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Thursday, March 22nd, 2012 AT 9:30 PM

7 Replies

  • Tiny
  • rasmataz
  • Member

Check if its getting vacuum

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Thursday, March 22nd, 2012 AT 9:37 PM
  • Tiny
  • ranger812572
  • Member

And if its not getting vacuum?

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Friday, March 23rd, 2012 AT 12:41 AM
  • Tiny
  • rasmataz
  • Member

It suppose to have vacuum if not check from the solenoid to the intake manifold

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Friday, March 23rd, 2012 AT 4:30 AM
  • Tiny
  • ranger812572
  • Member

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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Saturday, March 24th, 2012 AT 1:57 AM
  • Tiny
  • rasmataz
  • Member

The computer controls the solenoid when to open and close-

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Saturday, March 24th, 2012 AT 8:53 AM
  • Tiny
  • ranger812572
  • Member

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

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Monday, March 26th, 2012 AT 3:20 AM
  • Tiny
  • rasmataz
  • Member

Lesson learned here with the DPFE sensor-Thanks

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Monday, March 26th, 2012 AT 6:34 AM

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