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Cold start issues/running rich

Tiny
PUGLAS868
  • MEMBER
  • 2006 FORD CROWN VICTORIA
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 123,000 MILES
I am throwing all types of codes p0171, p0174. After I removed and plugged vacuum lines going to sensors on EGR it threw a p0106. Smoke tested intake manifold resulted in EGR leak placed in a block off plate to see if it helps threw p0108 and p0109. I know there is sensors on top of the EGR that measures exhaust and intake gasses. I am trying to throw as many related codes as possible to determine faulty EGR. I was wondering if my solution of a brand new $180.00 EGR is it MAF was replaced.
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Saturday, December 8th, 2018 AT 5:36 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,411 POSTS
Hello,

It sounds like you have a partially clogged catalytic converter. To confirm the issue check out this guide:

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Please run down these guides and report back.

Cheers, Ken
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Monday, December 10th, 2018 AT 4:45 PM

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