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Coldstart misfire

regachoz01

Active Member
Joined
May 22, 2021
Threads
14
Messages
42
Reaction score
3
Location
San jose
First Name
Zach
Vehicle(s)
2021 mustang gt
Hi guys,
I had my car for almost a year now and it never happened before. I recently just took out my resonator and muffler. Last night I did a cold start and the check engine light started blinking. It sounded like it was misfiring for 15seconds then it went back to normal. Is this normal? It says on the manual that when the CEL starts blinking, I should send it straight to the dealer. What do you guys think?
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