Coolant fan working?
#1
Coolant fan working?
I was reading a post about overheating issues on a Dodge Ram and haven't noticed if my fan comes on when my truck hears up. I pulled it off tonight and don't know how easy it should turn when cold or if you can even turn it by hand if it's working when hot. I can barely turn the nut when I grab it with my hand when cold, but it turns about the same when I heat the coiled spring. I guess my question is does it just freewheel easily when cold and/or does it lockup tight when engaged?
When I put it back on it was spinning approximately as fast as the engine was turning over.
Truck is the one in my sig.
When I put it back on it was spinning approximately as fast as the engine was turning over.
Truck is the one in my sig.
#2
Manual says to replace it if it revolves more than 5 turns when spun by hand when cold.
Fan drive engagement should have started to occur at between
74° to 8 2 ° C ( 1 6 5 ° to 180° F).
Engagement is distinguishable by a definite increase in fan
flow noise (roaring).
Fan drive disengagement should have started to occur at between
57° to 79° C ( 1 3 5 ° to 175° F).
A definite decrease of fan
flow noise (roaring) should be noticed.
Fan drive engagement should have started to occur at between
74° to 8 2 ° C ( 1 6 5 ° to 180° F).
Engagement is distinguishable by a definite increase in fan
flow noise (roaring).
Fan drive disengagement should have started to occur at between
57° to 79° C ( 1 3 5 ° to 175° F).
A definite decrease of fan
flow noise (roaring) should be noticed.
Last edited by Friar Tuck; 08-08-2016 at 11:08 PM.