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post #1 of 8 (permalink) Old 02-28-19, 08:39 PM Thread Starter
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Catalytic Converter Symptoms - '07 Navigator 5.4

I just received a Trouble Code saying Catalytic Insufficiency.....missed the numbers, but something says they came out as "generic. I have very close to 200K miles. I am scheduled to take it into a garage I use next week, and hoping I can get some ideas on what to expect, up and to including the replacement of the Converter. To make matters worse.....I was coming down a hill and "drifted" into my pickup....off to the Body Shop after the garage! Ron

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post #2 of 8 (permalink) Old 03-02-19, 09:08 AM
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Re: Catalytic Converter Symptoms - '07 Navigator 5.4

You'll probably be paying between $300-400 per cat (maybe more, I used Rock Auto, they may go OEM) and probably about a half day's worth of work. My guess is someplace north of a grand.
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post #3 of 8 (permalink) Old 03-02-19, 04:44 PM Thread Starter
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Re: Catalytic Converter Symptoms - '07 Navigator 5.4

Thanks for the confirmation CatSkinner. Like you, I looked at RockAuto, but believe they will go OEM. I used the prices of Rock to get some base and figured close to a grand for labor or whatever else pops up. Luckily they are long time frends, the price is never one of those "gottcha" deals. Ron
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post #4 of 8 (permalink) Old 05-02-19, 11:35 AM Thread Starter
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Re: Catalytic Converter Symptoms - '07 Navigator 5.4

UPDATE: Meant to get back sooner, but travel has delayed me. The Shop kept my car around for a month (they are friends), and they drove it, examined it, but couldn't get the Engine Light to come on and replicate the Code I received. So they said they couldn't find anything, but if it should occur again DO NOT ERASE THE CODE! So yesterday I took it to the Virginia Mountains to pick up my grandson from college.....total 760 miles, and it ran super. It averaged about 18.7mpg. I'll gladly accept it as a possible "fluke" with the Code, but like not shoveling out the bucks. CASE CLOSED!! Ron
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post #5 of 8 (permalink) Old 05-02-19, 06:55 PM
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Re: Catalytic Converter Symptoms - '07 Navigator 5.4

Thank you for posting back and letting us know.
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post #6 of 8 (permalink) Old 06-27-19, 09:52 AM Thread Starter
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Re: Catalytic Converter Symptoms - '07 Navigator 5.4

FINAL RESOLVE.....Had the light come on, went in and it was the right side converter......replaced!. CatSkinner....$1078. i was there when the removed it, sensor, everything was crapped. Ron
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post #7 of 8 (permalink) Old 06-28-19, 10:23 AM
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Re: Catalytic Converter Symptoms - '07 Navigator 5.4

Thanks for the update.

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post #8 of 8 (permalink) Old 07-02-19, 05:51 PM
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Re: Catalytic Converter Symptoms - '07 Navigator 5.4

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Originally Posted by Traveller_2007 View Post
FINAL RESOLVE.....Had the light come on, went in and it was the right side converter......replaced!. CatSkinner....$1078. i was there when the removed it, sensor, everything was crapped. Ron

Ow... like I said, I used Rock Auto for a reference, and that was just the price of the cat.

Ever notice that there's so many high performance parts available for GM products?

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