the speedometer switch is located at the rear of the diferential, remove wires clean and refit, that should cure it.
Valves tapping?
A speedometer in a 1994 Toyota Carina E 1.6 is exposed to the elements in the undercarriage of the car. Perhaps, it is not working properly until the car warms up because the cover has broken off or there is ice accumulating in that area.
The 2006 Ford F2 50 diesel engine might have a bad fuel injector. The injector can cause the engine to not run properly, until the engine warms up.
Often a knock when cold is caused by piston slap, which is pistons rocking in the cylinders until they expand in size when the engine warms up.
No, warn engine parts will cause loss of oil pressure as the engine warms up, due to expansion betweeen moving parts. Hot oil is thinner.
The sun warms the earth.
No, the O2 sensors are out of the "loop" until the engine warms up.
1 reason might b worn bearings
bad seal/ gasket around fuel injector or intake manifold. as engine warms components expand and form a seal.
this is caused from piston to cyl wall clearance when engine warms up the pistons exspand and the noise is less. DON'T WORRY ABOUT IT
i have a 2000 dodge work van 318 engine when i start in the morning it stalls several times until it warms up then ok
Bad ignition wires.