Maintenance and Upkeep Discussion HHR maintenance tips ranging from oil change intervals to brake pads and everything in between.

Repair flex pipe or replace cat?

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Old 07-03-2016, 06:04 PM
  #11  
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RockAuto sells both ACDelco and Delphi sensors- which is better?
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Old 07-03-2016, 07:16 PM
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They are the same, different boxes if that.

Delphi is the "del" in ACDelco.

Most are really made by NGK.
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Old 07-04-2016, 09:46 AM
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I have '07,had a leak in flex pipe, bought one from Rock Auto took it to a local muffler shop , they replaced it for $125 out the door, took a little over an hour with all work up and down lift ,recheck for leaks, etc.
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Old 04-25-2017, 02:49 PM
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2008 has 2 cats...

Originally Posted by Oldblue
If the O2 sensors are ok, why replace?
I've had no issues with the $147.00 pipe in 3 years but the decision is yours,
It came with three new nuts and gasket for the exhaust manifold flange , and 2 nuts and bolts and gasket for the flange at the other end of the pipe.

This might not last as long as OEM , but the OEM is broken and requires replacement

2006 2007 2008 2009 2010 2011 Chevrolet HHR Exhaust Catalytic Converter 2 4L | eBay


This clamps on with a new O2 bung, and is much more cost effective, and saves you the labour and welders fees


2006 2007 2008 2009 Chevrolet HHR 2 2L and 2 4L Catalytic Converter Flex Repair | eBay
How does this part work for the year models that have dual cats?
I've got a 2008 that I'm going to have to do this to and I'm liking the lower price.
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Old 04-25-2017, 04:24 PM
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Depends a lot on your state emissions laws.

Currently the price difference is not very much.
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Old 04-25-2017, 05:01 PM
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Sorry donbrew, could you explain a little further?
I know that my county has emissions testing but won't fail me if the check engine light is on.
I don't know if they actually measure the emissions out of the exhaust or what. I just know that the exhaust leak it has now is very loud and smelly and if I can save $80 - $100, I'd like to.
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Old 04-25-2017, 06:28 PM
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I don't live in Texas.

Some states have requirements that include labeling and construction, some even require the same manufacturers as the factory.

If you are wanting to save money just get the repair coupling, unless you have a P0420 code.
http://www.ebay.com/itm/Direct-Flex-...5U7xt-&vxp=mtr for example, there are others.
Drive as little as you can and with the windows open until it gets fixed.
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Old 04-26-2017, 07:09 AM
  #18  
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Originally Posted by jazz659
I know that my county has emissions testing but won't fail me if the check engine light is on.
I find this odd, I have emission testing in Atlanta and if the CEL is on, don't even show up for testing, you'll fail.
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Old 04-26-2017, 04:44 PM
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Originally Posted by donbrew
I don't live in Texas.

Some states have requirements that include labeling and construction, some even require the same manufacturers as the factory.

If you are wanting to save money just get the repair coupling, unless you have a P0420 code.
Direct Flex Repair Pipe JGM2143L-3LBF-CO2 02-09 Chevrolet HHR 4 Cyl. 2.2L 2.4L | eBay for example, there are others.
Drive as little as you can and with the windows open until it gets fixed.
Thank you Donbrew, I'm going to get the repair coupling. Appreciate the help.
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Old 04-26-2017, 04:45 PM
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Originally Posted by solman98
I find this odd, I have emission testing in Atlanta and if the CEL is on, don't even show up for testing, you'll fail.
I know. Pretty crazy, right? I didn't take my truck in for inspection for a week last year because my CEL was on. I found out afterwards, no problem. Took it in, passed.
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