Hi,
now the temperature fall down to under 10 degrees Celsius. If the engine cold the rpm rise to 1500 on drive and 2000 in park position.
After the engine complete warmup and open the big cooling circle the engine runs normal with 1000 rpm. Rpm reads from dash board not obd.
No codes and no other bad symptoms.
Is this normal?
98 Lumina and 3.8 V6.