Cooling Fan Behaviour - hard to explain

[Tomer]

I recently had the upgraded fan and controller installed on my 96 RT/10, and I have been observing very strange behaviour...I would like to ask the gurus if this seems strange...

First off, I also had the coolant changed, and I think I might have some air in the system, as driving in 55-60 degree ambient temps, cruising at 40 mph, the temp gauge went about 2/3 of the way between the 190 and the 225 tick...That seems high for such cool temps outside...The temp did come back down to 190, but again, not as fast as I would expect given the outside temps...

Today, upon starting the car which was cold (temp gauge all the way to the left) the cooling fan came on for ~ 30 seconds then shut off...weird I think...Then when the temp was 1/2 way between 100 and 190, again, the fan cycled on for less than a minute...Also, when leaving work, engine was still warm when I left, gauge read bang on the 190, straight up temp gauge reading, and the fan came on for a short time again...

This sure seems strange to me...ANyone know if this is normal, or what could cause all this blowing of hot air

Tomer

 

[Ulysses]

Your fan cycling every time you get close to or at 190 sounds reasonable. The temps your seeing are not. Well, they're normal if you have air in your system.

 

[ViperRay]

Your computer may still be learning about your new fan; it may subside after a few more runs. Did a check engine light come on? If so, this is probably the case. That still doesn't rule out air in your coolant line.

 

[Tomer]

Thanks ViperRay, no I did not get a check engine light, and I hope the computer is still learning...I have not driven it too far since the work was done (maybe 200 miles)...

The coolant change was done by a very competent Viper Tech, but it seems like I need to try the "burp" procedure...

SInce my surge tank (under the hood with rad cap) is full, should I remove about 1/2 of this coolant so I can squeeze the driver's side rad hose and see if there is any air in there? Then refill the surge tank...I do have the procedure from this site.

thanks
Tomer

 

[Ulysses]

When burping, it's better to extend the opening up with a piece of tight fitting pipe or something to that nature. If you can't find something handy, then remove enough to bring it down to about 2/3. Prepare for fluid splashing out as you squeeze the radiator hose or when air burps out.