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catalytic converter
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  1. Gen 1 Tuning/Modifications
    I am planning on modifying my exhaust; my plan is to buy the zzp catless downpipe and bolt in an exhaust cutout on the stock midpipe. If the primary catalytic converter is removed will the secondary catalytic converter be able to handle the extra chemicals or will it clog soon? If clogging turns...
  2. Gen1 Service Issues
    So I have a 2011 Chevy Cruze 1.4l Turbo that I purchased used in a private sale. After leaving the title office the CEL came on, got the code read at auto zone and it is the P0420. The catalytic converter had already been replaced by the previous owner less than a year ago. I took it to the shop...
  3. Gen1 Service Issues
    I recently had my front brakes done and the mechanic called to tell me there was a small oil leak coming from the oil feed line the feeds oil into the turbo, so I decided to have that replaced at the same time I had the brakes done. When I picked the car up there was a check engine light on and...
  4. Gen1 1.4L Turbo
    Could use some insight on this one. 2011 Chevy Cruze LT 1.4 Have a P0420 and no other codes. Replaced plugs (looked to be a good burn), checked PCV system, changed oxygen sensors and replaced catalytic converters with aftermarket ones. PCV hose from turbo housing to intake was found to be...
  5. Gen2 Powertrain
    Hey all, so apparently I need a new exhaust.. not sure the extent of it yet since I’m gonna have to take it to a muffler shop. But I was looking around for exhaust recommendations. Not sure if I’ll need a full exhaust with cat or just a cat back(I may not know what I’m talking about here). My...
  6. Gen1 Service Issues
    I have a 2014 Cruze LTZ with ~110,000 miles on it. My CEL came on at the end of October; OBD II scanner gave me code P0420. I took it up to Firestone, and they replaced the front O2 sensor and burned-out catalytic converter, as well as repaired/replaced the leaking head gasket and leaking...
  7. Gen1 Powertrain
    Not sure if I posted this in the right place. But I just got o2 sensors, engine air filter, and purge valve replaced about a week ago after codes P013B, P0171, P1101 and P2270. After all that got fixed I’m getting code 0420. Dealer suspects it’s the catalytic converter. 1. Could the o2 sensor...
  8. Gen1 Service Issues
    Hello everyone! First time poster and new to the website. I have a 2014 Cruze 1.4L RS LTZ with approx 92,xxx miles. My issue started a little over a month ago and the car has been in and out of 2 different service shops (including my dealer) since. One time driving I smelled something odd, so...
  9. Gen1 1.4L Turbo
    Hi, I’ve got a P0420 code and the dealer said that it was my front catalytic converter. I have a little over 80,000 miles on my 14 Cruze and I need help figuring out what caused the catalytic converter to go bad. I changed the spark plugs at 74k just for a tune up and the classic ignition coil...
  10. Gen1 1.4L Turbo
    Welcome to the house of Pain So I have been fighting with the CEL on my 146k mile 2014 Cruze 1.4t for quite some time and now I am at a loss. I have frequented the search bar throughout this venture and made some guesses of my own but I suppose its time to admit defeat and ask for help. A...
  11. Fuel Economy
    Hello guys! Do I need to buy a new catalytic converter or an injector is not working as it supposed to? Sometimes I feel the car like heavy or not responding quickly when I step on the gas(takes like 4-5 sec to kicks in), like if something were obstructing the exhaust pipe/muffler, the engine...
  12. Gen1 1.4L Turbo
    Hello all, For the last few months (since around October) I have been occasionally getting the P0420 CEL code. I currently have 104,000 miles on the odometer. The only service I’ve done to the vehicle is replacing the water outlet, the return line from the outlet to the coolant overflow tank...
  13. Gen1 Service Issues
    I recently had my 2015 Chevrolet Cruze checked for what smelled like my engine burning. The original mechanic replaced the heating hose and said it had cracked. I took my car back to the same mechanic a week later and said it still smelled like something under the hood was burning. He identified...
  14. Gen1 Powertrain
    Repectfully request advice: Low O2S2 voltage & high LTFT caused by bad Catalytic Con vehicle: 2011 Cruze LT 1.4L turbo, 67K miles (This car was not properly maintained by the previous owner.) Long Term fuel trim ~ 12.7 O2S2 (down stream O2 sensor) voltage .67 vacuum at idle after warm up ~...
  15. General Discussion
    Hello, I'm new to this post and this is my first post here, but I have recently purchased a 2013 Chevy Cruze LTZ six speed automatic, with 95,5xx Miles on it and have experience various issues, some slow, sluggish acceleration from a dead stop like the car is hesitating to get to higher RPM's...
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