Codes, what should I do here?

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Sep 1, 2009 | 9:09 PM

#21

lukemoore646

CF Active Member

Joined: May 2009

Posts: 289

Likes: 1

From: Munden Kansas

you mean the catalyst efficiency code?

Apr 4, 2010 | 8:57 PM

#22

jimg2347

CF Beginner

Joined: Mar 2010

Posts: 2

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My 99 Yukon was misfiring and set a po300 code. Changing the pick up coil in the distributor solved the problem. 30 dollar part and if that is not the cause, call it preventive maintenance.

Apr 4, 2010 | 9:20 PM

#23

s34n

CF Veteran

Joined: Nov 2009

Posts: 1,039

Likes: 1

From: sacramento,ca

does your truck have a cap and rotor or coil over plug configuration?

Apr 11, 2010 | 10:50 AM

#24

jimg2347

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Joined: Mar 2010

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It has a cap and rotor.

Apr 11, 2010 | 12:03 PM

#25

xpeder

CF Junior Member

Joined: Jan 2010

Posts: 85

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replace the back ocygen after the cat some the back sensor get lazy

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