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Old 02-17-2019, 09:43 PM   #1
PrecisionX
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Default 07 2.5i Outback Catalytic Converter replacement help

My wife has a 2007 2.5i Limited Outback with 140k and shes gotten the good ole flashing cruise control/check engine from time to time. Check engine is solid not flashing. The exhaust shop we took it to said she needs a new cat, one of the "2 or 3" that her car has that is actually hooked up to a sensor. How much should she be paying for this? We already paid $350 a few months ago for them to replace and weld a section of the exhaust that was leaking, thinking back i should have just found a stainless cat back brand new for $500-600 to replace it with. The shop wants $875 for this. Should we consider a whole new exhaust? Should we be paying this just for a stupid cat to be put on an old crap exhaust thats been patched? Any help on this matter would be great. Thank you!
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Old 02-17-2019, 09:56 PM   #2
Blktrax
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Location: West, NC
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2002 WRX 223K Mi.

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Consider 2 things, 1:Spark plugs are due every 30k miles on that gen EJ engine. 2: Usually the converter fails due to poor fuel burn (see spark plugs even though no misfire present) and leaking head gaskets sending coolant into the converter and damaging A/F & 02 sensors.

So, you can attempt a tune up with spark plugs and wires (if your model has them) and replace the A/F and O2 sensors and see if the p0420 comes back. Or if you don’t live in an emissions inspection requires area, just live with no cruise and the lights on.

I would strongly not recommend the use of aftermarket converters Regardless of their “lifetime warranty” they continue to fail regularly after about 12 months and you have to mail them back to the company to be verified for failure. It always ends up being a loose/loose for the end customer. If you’re going to fix it use OEM Subaru converters.
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Old 02-18-2019, 06:56 AM   #3
PrecisionX
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The plugs and wires were replaced in the fall. This has happened before. There was a miss fire in two cylinders so one day the car started after it rained and ran like crap, down on power etc.

The head gasket was replaced at 30k ish and 67k by Subaru. It was warranted. Previous owner had an issue and fought it. So the head gasket shouldn’t be due for a little while still, timing belt too. Not sure if this matters in the trouble shoot case. The mechanic did say that it was wheeping oil a little bit that it was “totally normal and every Subaru does it”.

The wipers have been working on and off which I don’t know if they’re related. Some days the wipers work and some they don’t, or they will work after a couple of hours. The rear will start moving and stop half way... then continue etc. the switch was replaced but that didn’t work. Mechanic said the motor was next.

Just need to be sure that $875 sounds normal and that it’s not a rip off.
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Old 02-18-2019, 01:05 PM   #4
Blktrax
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$875 actually sounds low, for Subaru converter assembly and labor, that definitely doesn't include new sensors.
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Old 02-19-2019, 09:54 PM   #5
CosmoTheCat
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That's definitely not an OE converter.

I'd find a new mechanic.
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Old 02-20-2019, 07:33 AM   #6
PrecisionX
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Quote:
Originally Posted by CosmoTheCat View Post
That's definitely not an OE converter.

I'd find a new mechanic.
What do you mean?
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Old 02-21-2019, 11:02 PM   #7
CosmoTheCat
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Is bigger than yours.

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What I mean is it sounds way too cheap for parts and labor on factory parts. Hell, you can get into the couple hundred bucks range just on heat shields. Anyway, for 900 bucks you're not getting a factory cat and sensors, even without labor.

The reason I suggest finding a new mechanic is because he's got you throwing parts at a problem that has not been diagnosed.
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