Hey all, my wife's '03 TLS mis-fires when it's cold. At least when I've driven it.

At first she told me she was driving on the freeway and her a loud "boom." I said a car near her probably backfired. She said it was her car, and I doubted her car in such "new" condition would backfire.

Now that I've driven the car, I don't doubt her at all that her car backfired.

Misfiring could easily cause backfire. It doens't do it all the time. =|

ANy ideas why? Goingn to bring it to the dealer tomorrow. But i'm waiting for the "couldn't duplicate" it reply. :fingerfawk: *sigh*

 

Possibly some bad coils but who knows , does the check engine light come on and please post what dealer comes up with