Ford Ranger Forum - Forums for Ford Ranger enthusiasts!

Go Back   Ford Ranger Forum - Forums for Ford Ranger enthusiasts! > >
Forgot Password? Join Us!

Welcome to Ford Ranger Forum

Reply
 
Thread Tools Search this Thread

  #1  
Old 07-24-2010, 07:07 AM
Lonncarr Lonncarr is offline
Rangerooter!
 
Join Date: Jul 2010
Posts: 117
Default Check Engine excessive egr flow?

Man this is a heck of a deal. I have a 2001 ford ranger with the 3.0 flex fuel with 103,000 miles. I keep getting the "check engine light" which is pulling code P0402. (EGR Flow Excessive). I have done a complete top end to make sure is wasn't a gasket issue, I have replaced the Idle air motor, the EGR valve, the EGR Solenoid and even a complete engine tune up. I love the truck, but I have to get this dealt with so my wife and kid can take it on a trip next week. Any help is appreciated.
Reply With Quote
  #2  
Old 07-24-2010, 07:29 AM
STL STL is offline
...............

 
Join Date: May 2009
Posts: 23,398
Default Re: Check Engine excessive egr flow?

Could be a bad DPFE sensor. you should also check the hoses running to and from the DPFE and the EGR Tube and make sure they aren't clogged, pinched or burned. If you end up replacing remove the negative battery cable








To test the sensor
Disconnect the DPFE sensor harness connector. With the ignition on and engine off, measure the voltage between VREF and SIGRTN terminals of the DPFE harness connector. If the voltage is 4 -5.5V, the power circuits to the sensor are okay.

__________________
2005 Edge

Reply With Quote
  #3  
Old 07-24-2010, 07:31 AM
Lonncarr Lonncarr is offline
Rangerooter!
 
Join Date: Jul 2010
Posts: 117
Default Re: Check Engine excessive egr flow?

Yep, Forgot...replaced that as well....along with the hoses.
Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
EGR -Insufficiant Flow TommyX51 3.0 Vulcan Tech 18 10-14-2010 04:36 PM
Check Engine Light AlphaRanger General Tech 4 07-08-2010 08:55 PM
DTC: EGR Valve Insufficiant Flow schwen_108 Exhaust and Mufflers 2 01-23-2010 01:14 AM
check engine light RangerLuc General Ford Ranger Discussion 15 10-06-2009 05:34 AM
Engine light/EGR Problem ratherbehiking 3.0 Vulcan Tech 0 06-04-2009 05:34 AM