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Old Today | 12:40 PM
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Default Cold start

Started my car this morning to leave work since I work graveyard shift. Most of the time I let sit idle for a few minutes till the yellow drops down to 5000rpm. But it was raining and nasty out so wanted to get home. When I put I drive I heard like a thump in the rear, hoping not transmission issue. I know the temp has dropped a little bit chilly in Louisiana than normally this time of year. Does anyone else let their car warm up before putting in drive or does it matter if the oil is heated up. Just wondering what people do up north when temps are extremely cold. I know most are going to say this is not a DD for them. But if I am paying a note and insurance I am driving this B*tch.

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Old Today | 12:54 PM
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Start it, drive it.... been that way for decades....
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Old Today | 01:01 PM
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You might have heard your AFM valve closing while your car went into V4 mode.
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Old Today | 01:08 PM
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Originally Posted by Hyper2023
Started my car this morning to leave work since I work graveyard shift. Most of the time I let sit idle for a few minutes till the yellow drops down to 5000rpm. But it was raining and nasty out so wanted to get home. When I put I drive I heard like a thump in the rear, hoping not transmission issue. I know the temp has dropped a little bit chilly in Louisiana than normally this time of year. Does anyone else let their car warm up before putting in drive or does it matter if the oil is heated up. Just wondering what people do up north when temps are extremely cold. I know most are going to say this is not a DD for them. But if I am paying a note and insurance I am driving this B*tch.
You only heard this once, and it was when you were idling and shifting into D right? If so, that not the AFM valves in the exhaust system. I can't say I recall that happening to me when shifting into park, but I sometimes, not always, hear a noise (from the transmission I think) when shifting from P to D, and sometime a bit of driveline tension, but not really enough to be a clunk. I would not worry about it unless it becomes consistent though.

Regarding RPM, I think you mean you normally wait to 500 rpm, not 5000 rpm, but this time you did it when the idle was a little faster. So yeah, that might have something to do with the clunk too.

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Old Today | 01:58 PM
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Our transmission has a broad repertoire of assorted ghost noises. Not always, more like seldom. Learned to simply ride the lightning.
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Old Today | 02:39 PM
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My preference was an easy choice.

Deleted Cold Start and AFM on my tunes. Pleased that both are permanently removed.
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