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I have 99 mercury cougar the problem is after 10 min I dr...


I have 99 mercury cougar the problem is after 10 min I drive the car kick on the cooling fan N keep on all the time i replaced temp cooling sensor still on Mechanic's Assistant: Have you checked the connectors on the senso...

I have 99 mercury cougar the problem is after 10 min I drive the car kick on the cooling fan N keep on all the time i replaced temp cooling sensor still on Mechanic's Assistant: Have you checked the connectors on the sensor itself? It's important that they not be loose or corroded. Yes I did everything looks good Mechanic's Assistant: What year is your Cougar? 1999 Mechanic's Assistant: Are you fixing your Cougar yourself? What have you tried so far? I check also relays is good Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? The problem started because the water pump belt broke so I drive the car 10 mile to get home

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Automotive Expert
Howdy from Tennessee, I'm Chris aka Moose. Who am I helping today? I'm glad you've come here to get help. I will do my best to get the answer you are looking for. I help many customers, so sometimes my replies are delayed, I will respond once available. I try to be online at 1-5 pm and 10 pm-5 am every day. - If you turn off the climate control, does this concern still occur? - Do you have a scan tool to see the coolant temp reading the PCM is getting?

I have scan tool I'm try see temp readingWhat is the normal temp?when I turn off the climate still on
Automotive Expert
The normal operating temp is between 180-210 degrees. We need to see what temp the fan comes on at and what temp the engine is running at while the fan is staying on.

Fan came on when 210 degrees
Automotive Expert
That is correct. From that point did the coolant temp stay right there or did it go up and down, if so to what level?

the temp stay 210d no up no downtemp stay 210 no up no down
Automotive Expert
Thanks for those details. Please sit tight as I work on your question, it should be no more than 15-minutes.

Ok
Automotive Expert
Although the fan is working as designed and the car is not overheating. There is not a need for immediate repair since it is working within temp specs. If you would like to see the coolant temps lowering and the fan turning on/off. You can try a few things. Remove the upper and lower radiator hoses, remove the heater core hoses, remove the thermostat. Flush the engine, radiator, heater core forward and backward to remove any gunk built up in the system using a garden hose. Then install a new thermostat and new coolant. Run the engine with the heat on and coolant cap off for about 15 minutes to bleed out all air pockets. Thank you for seeking us for help, I hope I provided what was needed. Press reply if you need to follow up. If you liked my answer please let me know so I can mark your question complete. Moose
Automotive Expert
Checking in with you. Please let me know if you liked my answer, or need more help.

already did it all you recommended, still doing same problem.... 3 days ago when you ask me what temp the fan kick on N I told you 210 degrees the temp no up no down the car is parking. But wen I drive the car yes the temp I going up almost to the red

Need more help check online
Automotive Expert
Is your Cougar a 4 or 6 cylinder?

6 cylinder
Automotive Expert
At 210 you should be registering in the middle not in the red. This may be a cluster issue. Can you perform these tests? [https://www.dropbox.com/s/acu1mw3pwi9ekjv/cougartherrmostattest.pdf?dl=0](https://www.dropbox.com/s/acu1mw3pwi9ekjv/cougartherrmostattest.pdf?dl=0)
Automotive Expert
It's been a couple of days since you replied. I am going to mark your question complete for now. Reply as needed.

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