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Old 08-04-2021, 11:05 AM   #1
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Catalytic Converter Replacement

I have a 2014 Georgetown 350DS with under 50,000 miles that I recently purchased used.

My check engine light was on and I thought it was a bad mass air intake sensor. It turns out my catalytic converter is bad and needs to be replaced.


The dealer wants $2800 to replace it, which is more than i want to pay to get it done.



I am wondering if anyone on here knows how difficult it is to replace a catalytic converter on your own? or am i better off just having the dealer replace the converter?


Thanks for your advice in advance.



Tony
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Old 08-04-2021, 12:09 PM   #2
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Lots of people have had them stolen and then covered by insurance. From all of the pics, they posted as long as the sensor(s) are still OK it should be a pretty easy replacement on an intact one.

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Old 08-04-2021, 12:15 PM   #3
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that's really low miles for one to fail I would get another shop to check it.
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Old 08-04-2021, 12:15 PM   #4
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Do you trust the dealer? It could just be a sensor problem.

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Old 08-04-2021, 12:47 PM   #5
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You didn't state what code(s) you had for your CEL. Before committing to a CAT replacement I would check the operation of the CAT with an infrared thermometer. Run your vehicle a few miles, then let it idle. Crawl underneath with an infrared thermometer. Shoot the thermometer at the inlet of the CAT, Record the reading, then shoot the outlet of the CAT. If the outlet temp is 20F or more higher then the inlet temp, the CAT is functioning. While 20F hotter is acceptable, a good functioning CAT will run at least 100 hotter at the outlet. It's how they work. As stated earlier by someone, often times the actual fault is a downstream O2 sensor. Shops will always try to upsell you, and they will replace the sensor along with the CAT, so you'll never know the difference.

Are you lacking power?
Can you hear the CAT rattling?
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Old 08-04-2021, 12:56 PM   #6
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Quote:
Originally Posted by cfo111 View Post
that's really low miles for one to fail I would get another shop to check it.
And I absolutely would assure I got the old catalytic converter returned. Apparently those things are rather valuable...

I recall reading about people wanting to put oil intended for a diesel in an Onan generator because that was all they could find with the proper ratings (Rotella T6 15W40?). The label on the oil had a specific exclusion against using it on catalytic converter-equipped vehicles because it could damage the converter. Apparently it has a higher concentration of zinc or something and if you have an oil burner the ZDDP zinc additive can coat the catalytic converter innards.

Apparently an over-rich mixture or a leaking exhaust can also kill them. So it' not just mileage.

Ray
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Old 08-04-2021, 01:01 PM   #7
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In Jan 2020 my converter was cut off and stolen.

Because the R V sits so high the muffler shop came to where mine is stored and installed it there for $100.00 The cost for the new converter from Ford with pipes, clamps and sensor was $1500.00.

If I were you I would get another shop to check if the converter is bad.

Call muffler shops. The dealer price sound too high.


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Old 08-04-2021, 02:20 PM   #8
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FOR 05-07 FORD F250 F350 SUPER DUTY 5.4L 6.8L CATALYTIC CONVERTER EXHAUST PIPE

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Old 08-04-2021, 03:48 PM   #9
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Definitely get another opinion. I'm betting with the others that it is a sensor problem. Or you could use a friends address in a part of AZ that doesn't require inspection and just get rid of it
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Old 08-04-2021, 04:51 PM   #10
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Definitely get another opinion. I'm betting with the others that it is a sensor problem. Or you could use a friends address in a part of AZ that doesn't require inspection and just get rid of it
Harder do that on later model vehicles. That is unless you like a CEL light on all the time and driving down the road in "limp mode" because the computer knows the CAT is missing.
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Old 08-04-2021, 05:21 PM   #11
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Harder do that on later model vehicles. That is unless you like a CEL light on all the time and driving down the road in "limp mode" because the computer knows the CAT is missing.
It is actually quite easily done by several different methods. If there is a sensor, you can guarantee someone has a bypass......
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