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Ford Truck Club Forum > FORD F-100 | F-150 SERIES > 1992-1996 Ford F150



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Old February 2nd, 2015, 06:39 PM
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Default Code 327 help

Check engine light comes on randomly and usually last about 3 - 5 seconds and then goes off. May stay off for several minutes but eventually does it again. Bought a reader and found code 327. I see that it is EGR related. I've only had the truck 2 months and see that it has a new EGR unit installed and was done at a shop a couple of months ago according to the service records that came with the truck. I've looked at the green vacuum line and it appears to be in good shape. What can I do to find what's causing the code?
  #2  
Old February 2nd, 2015, 07:11 PM
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have you checked all the sensors in the system

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Old February 2nd, 2015, 07:26 PM
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I used all the tests that the code reader was capable of performing. Which sensors should I be looking at and how are they checked?
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Old February 2nd, 2015, 10:37 PM
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http://easyautodiagnostics.com/ford/...e-egr-system-1

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Old February 2nd, 2015, 11:44 PM
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EGR feedback signal is/was low – EVR or PFE

What year and engine?

2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
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Old February 3rd, 2015, 12:17 AM
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Quote:
Originally Posted by glc View Post
EGR feedback signal is/was low – EVR or PFE

What year and engine?
1994 5.0
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Old February 3rd, 2015, 12:18 AM
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That's a great article, thank you.
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Old February 3rd, 2015, 12:28 PM
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EVR = EGR Valve Vacuum Regulator Solenoid
PFE = DPFE Sensor (Delta Pressure Feedback Egr)

Note that the procedure Skate linked does not apply to a 94 F-150. However, the concept is similar. Rock Auto lists an EGR valve and a DPFE for your engine, but not a EVR.

2003 F-150 XL RCSB 2wd 4.2 5 speed 3.55 LS
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Old February 3rd, 2015, 03:16 PM
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The code only showed in the KOEO test, so I'll try clearing the code first to see if it comes back. If it does I' ll try further testing. I'd really like to pin point the problem so I can avoid changing parts that aren't bad.
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Old February 3rd, 2015, 08:14 PM
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Skate, do you mind if I add that link to a new thread


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