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Hi,the ignition coil is the most likely culprit here intermittently you may have a primary ignition internal problem in the coil.Thanks for your time.
Hi, does the car have any aftermarket equipment like a remote starter or alarm?
Hi,please check the engine harness the connectors are located on the passenger side where the engine and transmission meet,try manipulating the harness and connectors to see if you can get it to start and maintain idle,thanks
Hi, I think we've found the problem but at this point it's impossible to say its fixed you just need to roll with it since you can't pinpoint the exact cause but I'm leaning toward a poor connection in the harness somewhere.