FlatbedHemi
Senior Member
Was sitting in the trailer line waiting to unload at our local fair and I noticed the A/C wasn't cooling as well as it should. I figured it was because we were idling in a parking lot in 96 degree heat, so I turned on the recirculate and kept doing what I was doing. A few minutes later it dinged, popped a light, and said engine too hot on the screen. I went through the SOP for overheating; A/C off, heater on high, pop hood. We made it through the line and got loaded without getting the temps over 235-240 again, but I knew there was an issue somewhere. Long story short, I think I narrowed it to the fan clutch because it cools when parked and revved or in motion. Its just sitting still at idle that it gets hot. So, i ordered a new fan clutch.
Now Im wondering if I need to go ahead and change the coolant and do a flush or something. The truck has 131K miles and never had any coolant maintenance done. Is there a specific procedure for performing a flush on these trucks?
What about the T-stat? Is it likely that it likely that the minute or so that the truck hit 255 that it ruined the t-stat? I have noticed that when at speed and unloaded, temps run between 195-205. Honestly, I never paid much attention to the temp other than just where the needle is, so I dont really remember what temp it normally ran at.
Now Im wondering if I need to go ahead and change the coolant and do a flush or something. The truck has 131K miles and never had any coolant maintenance done. Is there a specific procedure for performing a flush on these trucks?
What about the T-stat? Is it likely that it likely that the minute or so that the truck hit 255 that it ruined the t-stat? I have noticed that when at speed and unloaded, temps run between 195-205. Honestly, I never paid much attention to the temp other than just where the needle is, so I dont really remember what temp it normally ran at.