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2019 Audi S4 — delayed engagement into Drive when cold — anyone dealt with this recently?
After sitting overnight, shifting from Park to Drive can take a second or two before the vehicle actually engages. Once warm it behaves normally. Would you start with fluid, adaptation data, mounts o…
Question: Delayed engagement into Drive when cold
On cold mornings, shifting from Park to Drive takes a second or two before the car actually engages. Once warm it's instant and shifts fine. Fluid level/condition is my first thought, but what else s…
1993 Mazda RX-7 — surface rust underneath a winter daily
There is early surface rust on brackets, fasteners and seams underneath, but nothing structural. For a salt-belt car, what treatment slows it down without creating a hard coating that traps moisture?…
2021 Chevrolet Silverado 1500 LTZ 6.2 — need advice: Silverado light-throttle shudder: engine or transmission?
At steady speed with light throttle I get a vibration that feels almost like driving over fine rumble strips. It disappears if I accelerate. What's the cleanest way to separate wheel/tire issues, cyl…
Coolant level slowly drops with no puddle
Reservoir moves from full to low over a few weeks. No puddle, no obvious hose leak, and the oil looks normal. Is a pressure test the next logical step or is there something simpler I should inspect f…