2006 Chrysler 300 Overheating – Ticking Noise
July 9, 2009 7:12 am Auto Technician / Mechanic, DIY, What's New?
Chrysler 300 with only 37,000 miles overheated & towed in
What would cause two cooling fan motors to be out at the same time? One possibility is that they didn’t fail at the same time, one failed and the car was still able to be driven until the other failed also. But two fan motors failing on a car that only has 37,000 miles didn’t make sense either. Obviously power and ground supply was first checked with a power probe to verify the motors were getting the correct input to allow them to run. Once the fan motors were replaced, a terrible ticking noise was heard. More pictures below:
Nice AWD 300 with a HEMI, gets up and goes!
The ticking sound was both fan blades with a single split each.
Without replacing the blades at the same time the motors would have failed again.
As seen in the above pictures, the cause of the faulty motors could easily have been the broken fan blades. With the splits in the blades and the tight clearance they have with the fan shroud, lots of rubbing occurred. The interference not only slows down the blades, it could also burn out the motors prematurely. The dealer had these fan blades in stock… the reason they keep these IN STOCK could be for collision shops. But unless we miss our guess there will be a lot more of these weak designed fan blades “coming to a shop near you.”
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samuel Odhiambo :
Date: July 26, 2009 @ 1:36 pm
My car was just driving fine and the gauge’s reading was normal. I stopped at a traffic light and suddenly noticed steam coming out from under the hood. I once again checked the temperature gauge and noticed it was not high. I came out of the car having turned off the engine and noticed that the radiator’s automatic release valve opened and the coolant was flowing out onto the road. I waited for the car to cool down, added coolant and decided to continue with my journey. After moving 3 miles, the car started to overheat whereby the gauge showed high temperature reading. What could have been the problem?
dennisb - Auto Tool Sales :
Date: July 26, 2009 @ 5:23 pm
Samuel, if the car overheats (and there are no leaks) coolant can over-flow from the coolant reservoir if the pressure exceeds the pressure rating on the cap. This is most likely where the coolant is coming from, as long as there are no leaks. There are a few things that could cause this to happen.
1. Cooling fans not working properly.
2. Thermostat stuck closed, not allowing coolant to flow.
3. Low engine oil level.
If the cooling fans are getting power, be sure to check the blades for cracks as mentioned in the repair article.