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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for May 28, 2026
International Automotive Technicians' Network (iATN) - Members Only
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2014 Cadillac CTS Luxury 3.6L Excessive Emissions, Poor Idle Quality, Surge, Misfire, MIL Lamp on VIN: 1G6DD1E33E
start car - misfire / backfire / stumble.. As it continues to run it starts to balance out.. car running smooth but find ST fuel trim at 0 and fixed .. LT fuel trim fixed at 40.. Check air box / air filter / intake hose / hoses and tubes on motor = all loo... Trouble codes: P171., P174., P300.
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