Q: Q: Engine takes to long to warm up I've replaced thermostat already and it misses horrible till it warms up its a 4.9 engine

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Truck starts up in the morning and idles tight up then dies and misses and runs rough then warms up and runs good until i stop for a few minutes start it back up and it misses again until it runs for a few minutes

My car has 173000 miles.
My car has an automatic transmission.

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