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10/08/2021 3:17 pm
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Hi Scotty,
My fuel trim is all over the place when I'm driving. The short term fuel trim jumps to 19.8 percent when I let off the gas as I'm driving. I'm not getting any codes, but this seems really abnormal. I also keep having ignition coils go out. I've cleaned the MAF sensor, replaced all the spark plugs and the coils that have failed, but now another coil is failing. The vehicle is a 2013 Cadillac ATS with the 2.0T and 6 speed manual transmission with 83k miles.
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10/08/2021 7:20 pm
When you decelerate it's adding a ton of fuel so I would check for vacuum leak somewhere when it sucks too much air it runs lean and it has to add fuel
Thanks Scotty! I appreciate it.