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Code P0104?

Tiny
OCRIM504
  • MEMBER
  • 1999 FORD RANGER
  • 4 CYL
  • 2WD
  • MANUAL
  • 138,000 MILES
How do I clear obd II code P0104 on 1999 Ford Ranger 4 cyl. Replaced EGR but Check Engine returned after 2 days or about 15 miles.
Monday, June 27th, 2011 AT 1:50 PM

13 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Did you ever check and see if the egr port was cloged up when you changed the valve?
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Monday, June 27th, 2011 AT 2:46 PM
Tiny
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Only checked the opening with my finger before attaching the new EGR. I assume that the intake would have to be removed to thoroughly remove the carbon deposits.
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Monday, June 27th, 2011 AT 3:51 PM
Tiny
SATURNTECH9
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Some people have cleaned them without removing the intake depends how clogged they are.A easy way to see if its clogged is to remove the egr valve start the engine for a few secs the rpms should go up fast without touching the gas pedal and you should hear a loud exhaust leak. Are sure you have a code P1404?
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Monday, June 27th, 2011 AT 4:19 PM
Tiny
OCRIM504
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The code is P0401 (insufficient flow).

Thanks, JC
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Monday, June 27th, 2011 AT 5:11 PM
Tiny
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Sorry it is P0401 !
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Monday, June 27th, 2011 AT 5:13 PM
Tiny
SATURNTECH9
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I had a feeling that was the code you had try checking for a clogged port like I suggested and we will go from there.
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Monday, June 27th, 2011 AT 5:16 PM
Tiny
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I'll do that and let you know.

Thanks again, JC
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Monday, June 27th, 2011 AT 7:54 PM
Tiny
SATURNTECH9
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Keep me posted.
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Monday, June 27th, 2011 AT 8:02 PM
Tiny
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I removed the EGR. When I tried to start the motor it did not rev up and in fact would not run without giving it gas and died imediately when I let off the gas.
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Tuesday, June 28th, 2011 AT 3:34 PM
Tiny
SATURNTECH9
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Sounds like the intake side is clear did you hear a loud exhaust leak from the egr valve being off?
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Tuesday, June 28th, 2011 AT 3:38 PM
Tiny
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Yes to the exhaust leak sound.
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Tuesday, June 28th, 2011 AT 3:40 PM
Tiny
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Anything else I should try or do at this point?
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Tuesday, June 28th, 2011 AT 5:46 PM
Tiny
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I posted the trouble tree for your code P0401 follow it down till it goes to the next code listed. Let me know what you find sounds like the egr ports are clear.
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Tuesday, June 28th, 2011 AT 9:15 PM

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