Cavalier/Z24 L4-134 2.2L (1991)
Radiator Cooling Fan Motor: Initial Inspection and Diagnostic Overview
System Check
1.
With ambient temperature above 70°F, open all doors, start engine and set mode selector, if equipped to MAX. Coolant fan should turn on.
2.
With engine coolant below operating temperature, move mode selector to OFF position. Coolant fan should turn off in a short period of time.
3.
Run engine at fast idle for several minutes, coolant fan should turn on before coolant temperature indicator comes on or coolant temperature
display shows H.
4.
Turn ignition switch to Off position, coolant fan should turn off.
Troubleshooting Hints
1.
On 1990 models, visually inspect HTR/A/C fuse or fuse 16.
2.
On 1991-92 models, if coolant fan does not operate, check fusible link L and HTR/A/C fuse.
3.
On all models, if coolant fan runs with ignition switch off, replace coolant fan relay.
