Sorry for the post on what may seem obvious but it's Monday morning and my head isn't in it today. Anyway, car has stock clutch fan, replacement stock water pump, stock shroud and replacement stock Modine radiator. Everything was fine but a few days ago after sitting for a few days the temp gauge went almost to 1/2 way up before coming down to normal. Thought maybe air in the system after 2 days it was fine. It seems to be running slightly higher than normal since in stop and go. The temp will drop at speed but go back up at stop. The car sat again for a day and this morning the temp gauge went to 1/2 way and dropped slightly but stayed higher. Pulled over., lifted the hood and noticed the following
no coolant leaks
no weeping from H20 pump
all hoses and belts OK
overlflow has coolant
upper rad hose hot so stat opening
no visible leaks or hissing noises to indicate leaks
No visible obstructions in front of the condensor
Cap tight
One thing I did notice about the clutch fan was the edge of some blades looked as if they had black crap on them and the fan itself spun rather freely. There was some resistance but not much. Funny when I restarted the car the temp gauge came right down to normal. I know these gauges are terrible but my guess is the clutch fan or maybe the cap is bad.
no coolant leaks
no weeping from H20 pump
all hoses and belts OK
overlflow has coolant
upper rad hose hot so stat opening
no visible leaks or hissing noises to indicate leaks
No visible obstructions in front of the condensor
Cap tight
One thing I did notice about the clutch fan was the edge of some blades looked as if they had black crap on them and the fan itself spun rather freely. There was some resistance but not much. Funny when I restarted the car the temp gauge came right down to normal. I know these gauges are terrible but my guess is the clutch fan or maybe the cap is bad.