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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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09-10-2020, 11:03 PM | #1 |
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Car won't start one week after installing headers
Hi everyone,
So pretty much last Friday I had a shop install these catless EL headers. When I got home from the shop I did the stage 2+ tune from my OFT. Car was a lot of fun to drive and drove fine all week. This morning as I was coming back home, I was doing a 3 point turn and I braked. As the car came to a full stop the engine just cut off. I turned it off and tried to turn it back on but no luck. I got a boost because I thought that was the issue but no. When I was under the hood I smelled a faint burnt smell, wasnt sure if that was from the header but when I looked I saw my 02 sensor seems to be burnt. Sorry if the picture isn't clear enough. I did search these forums but I found several different threads with people who had a similar problem to mine. I also found several different answers. So I am no mechanic, but if the car won't start and I notice the 02 sensor is damaged, it would seem like I need a new 02 sensor. But before I spend money, I have a few questions: has anyone heard or had this issue before? Why would the sensor go bad, is this something that just happened or is it the shops fault? Im praying its just the sensor and nothing more like the wiring or I dont even know what. Thank you all in advance for any help. Edit: Car is a 2014 BRZ, added Skunk2 EL Headers Last edited by Slade; 09-10-2020 at 11:55 PM. Reason: Added information |
09-10-2020, 11:11 PM | #2 |
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I don't see anything that would convince me (from the picture alone) that the O2 sensor is bad. Anyone know if the car will run briefly with no o2? Could help for testing if you just unplug it and see what happens.
Does it crank? Any other symptoms? Check engine light? Sent from my ONEPLUS A5010 using Tapatalk |
The Following User Says Thank You to Ashikabi For This Useful Post: | Slade (09-10-2020) |
09-10-2020, 11:27 PM | #3 | |
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Side note, that bung looks flat wrong, almost like the shop chopped the entire bung and sensor off before swapping. What header is this? |
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The Following User Says Thank You to anticubus For This Useful Post: | Slade (09-10-2020) |
09-10-2020, 11:32 PM | #4 |
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What's ur car year and model? Are u able to check the fuel trim on OFT? Cuz brz/frs they adjust the AFR through reading O2 sensors and send it back to the ecu to do the adjustment. I once had a catless uel header and sometimes it won't start well because of the ecu thinking it run too lean based on what o2 sensor reading. Then, it will flood the engine with too much fuel thus it will crank but won't turn over. That's my guessing ofc.
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The Following User Says Thank You to jason_456788 For This Useful Post: | Slade (09-10-2020) |
09-10-2020, 11:47 PM | #5 | |
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09-10-2020, 11:51 PM | #6 | |
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09-10-2020, 11:52 PM | #7 | |
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09-10-2020, 11:54 PM | #8 | |
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09-10-2020, 11:55 PM | #9 | |
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09-11-2020, 12:04 AM | #10 | |
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I know it's a lot of questions but diagnosing a car is pretty complex. Especially over the internet Sent from my ONEPLUS A5010 using Tapatalk |
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09-11-2020, 12:10 AM | #11 | |
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09-11-2020, 12:11 AM | #12 | |
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09-11-2020, 12:18 AM | #13 | |
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09-11-2020, 12:21 AM | #14 |
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Fuel pump works, it gives one weak crank and sputter then just gives up, I will send a video tomorrow, its a push start btw, no engine codes no nothing, boost didn't help start the car. I can get the battery tested but like I said I just bought this battery in May.
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