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L92 Injector harness sequence and P0300s

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Old May 8, 2024 | 05:24 PM
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Default L92 Injector harness sequence and P0300s
I'm having random misfire and bank 1 lean codes after swapping injectors in a 2008 L92. I'm starting to think I may have mixed up some of the injector wires. Is there a way to tell which plug goes where for cylinders 1, 3, 5, 7? I'm using an aftermarket intake and fuel rails. I spray around with carb cleaner and didn't find any vacuum leaks. Engine idles rough and doesn't tolerate load. The LTFTs on bank 1 quickly go up to 30 at idle. LTFTs on bank 2 are normal. Thanks in advance and I apologize for the newbie question!
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Old May 9, 2024 | 12:51 PM
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Are the injectors new/used?
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Old May 9, 2024 | 08:04 PM
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Originally Posted by LilJayV10
Are the injectors new/used?
Aftermarket FAST 65lb injectors. Basically, im wondering if my harness rotated 180 so 1 is plugged into 7.
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Old May 9, 2024 | 08:16 PM
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#1 PK/BLK TAN
#3 PK/BLK PK/BLK
#5 PK TAN/WH
#7 PK OR/BLK

This won't cause one side to be like that, but did you update your tune with the correct injector data?

Last I knew, FAST didn't have any data for the stuff they sold.

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Old May 9, 2024 | 10:37 PM
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Originally Posted by LilJayV10
#1 PK/BLK TAN
#3 PK/BLK PK/BLK
#5 PK TAN/WH
#7 PK OR/BLK

This won't cause one side to be like that, but did you update your tune with the correct injector data?

Last I knew, FAST didn't have any data for the stuff they sold.
Awesome, thanks, i will confirm. I am using a Black Bear auto cal and tune they provided. Bank 2 is running great with good LTFTs, bank 1 is misfiring and running like crap with high LTFTs.
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Old May 18, 2024 | 06:58 PM
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You ever get this figured out?
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Old May 18, 2024 | 07:44 PM
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Originally Posted by LilJayV10
You ever get this figured out?
Got it figured out. The oxygen sensors were both very, very bad or fakes (ordered from Rock Auto). On to good problems now!
Last edited by FastGas; May 18, 2024 at 08:43 PM.
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Old May 19, 2024 | 02:24 AM
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Got dam, belt wrap for days.

Nice
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Old May 19, 2024 | 09:36 AM
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Originally Posted by LilJayV10
Got dam, belt wrap for days.

Nice
It got a grip for sure....
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Old May 20, 2024 | 11:47 AM
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Thanks. My fuel trims have flipped now but they are consistent. Time for the tuner to take another look after some more logging
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