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My motor is knocking and over heats turned off.

Tiny
ANONYMOUS
  • MEMBER
  • 2000 CHRYSLER 300
  • 205,758 MILES
My motor is knocking and over heats turned off twice when ot started to over heat but turns back on and I still drive it
Thursday, March 7th, 2013 AT 9:03 PM

17 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Driving it overheated is killing the motor. Have it checked asap to see if you damaged the head gasket or more.

Roy
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Thursday, March 7th, 2013 AT 11:05 PM
Tiny
TINO_SOCCER87
  • MEMBER
  • 14 POSTS
  • 2000 CHRYSLER 300
I have an overheating problem. On a 2000 300m Chrysler.
I replaced the water pump, new timing components, new thermostat (I have changed it 3 times). The fans are both working. There are no leaks. Good coolant circulation. I am afraid head gaskets are put wrong, how would I know?

**When I turn the heat on the tempurature drops to the middle.

Please help.
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Friday, March 31st, 2017 AT 1:41 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
[quote]I am afraid head gaskets are put wrong[/quote]

What would make you say that? Did you just have head gaskets done?
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Friday, March 31st, 2017 AT 1:41 PM (Merged)
Tiny
TINO_SOCCER87
  • MEMBER
  • 14 POSTS
Yea I was told the head gaskets were bad and the water pump. They were replaced and now my car is overheating. Is there a difference between the right and left head gaskets if they were put on the wrong side?
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Friday, March 31st, 2017 AT 1:41 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
No, but there is certainly a lot more to do in that job than just toss gaskets on it. The heads needed to go out to a machine shop for testing.
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Friday, March 31st, 2017 AT 1:41 PM (Merged)
Tiny
CARADIODOC
  • MECHANIC
  • 33,727 POSTS
Sorry for butting in but your comment on turning on the heater caught my attention. My old minivan acted like that years ago. Ran warm at anything over 60 mph, (when the higher air flow should have helped), and 60 degrees. It was caused by the cooling fins in the radiator being rotted away. Running the rear heater always brought the temperature down.

Also look for a butterfly collection blocking air flow through the radiator.
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Friday, March 31st, 2017 AT 1:41 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Turning the heater on merely added some additional cooling to a system that was already overloaded. I suspect there were other issues with the head that weren't resolved.
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Friday, March 31st, 2017 AT 1:41 PM (Merged)
Tiny
TOEKNEE03
  • MEMBER
  • 3 POSTS
  • 2000 CHRYSLER 300
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 10,000 MILES
Engine Cooling problem
2000 Chrysler 300 6 cyl Front Wheel Drive Automatic 100, 00 miles

I HAVE A CHRYSLER 300M WE HAD TO REPLACE THE MOTOR A FEW MONTHS AGO BECAUSE IT OVER HEATED AND BLEW A HOLE IN THE BLOCK. WELL SINCE WE GOT IT BACK IT IS OVER HEATING. THE MECHANIC SAID IT MIGHT BE THE FREEZE PLUG IN THE BACK OF THE MOTOR. BUT MY HUSBAND THINKS IT MIGHT BE SOME LINE THAT GO TO THE RADIATOR THAT ARE FOR THE OIL PUMP I THINK IDK AT ANY RATE WE HAVE REPLACED THE THERMOSTAT TWICE. IT WAS DRIVEN 10 MILES TODAY AND OVER HEATED HELP PLEASE.
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Friday, March 31st, 2017 AT 1:41 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Have we checked if the radiator is clogged-up or the water pump is doing its job pushing coolant thru or airlock in the cooling system that needs bleeding?
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Friday, March 31st, 2017 AT 1:41 PM (Merged)
Tiny
TOEKNEE03
  • MEMBER
  • 3 POSTS
My husband bleed the coolant on saturday because it over heated on us then as well it does it all the time. HELP
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Friday, March 31st, 2017 AT 1:42 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Get it block and pressure tested to find out if its a blown headgasket, cracked head or block.
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Friday, March 31st, 2017 AT 1:42 PM (Merged)
Tiny
TOEKNEE03
  • MEMBER
  • 3 POSTS
The water is not circulating. How hard is it to change the water pump cuz its an internal water pump. Would it be the water pump with it not circulating. Help
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Friday, March 31st, 2017 AT 1:42 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Not familiar with this vehicle and the short cut to R/R the water pump-if its not circulating that's the pump's job to move coolant thru out the engine.
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Friday, March 31st, 2017 AT 1:42 PM (Merged)
Tiny
DIANA THOMAS
  • MEMBER
  • 6 POSTS
  • 2000 CHRYSLER 300
  • 6 CYL
  • 2WD
  • AUTOMATIC
Chrysler 300M is continuously overheating. I check all the fluids with no obvious leaks but continues to overheat. What can cause this?
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Friday, March 31st, 2017 AT 1:42 PM (Merged)
Tiny
CARADIODOC
  • MECHANIC
  • 33,727 POSTS
Radiator fans not turning on due to defective relay, or defective fan motor. Leaking head gasket, blocked radiator, corroded cooling fins in radiator, sticking thermostat.
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Friday, March 31st, 2017 AT 1:42 PM (Merged)
Tiny
KNEDD123
  • MEMBER
  • 1 POST
  • 2000 CHRYSLER 300
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 142,000 MILES
Engine Cooling problem
2000 Chrysler 300 6 cyl Front Wheel Drive Automatic 142000 miles

Hello

what need to be done when the above vehicle, shows no sign of obvious water leak, but the temp gauge shots up to the 95% hot mark after about 6 miles of driving, I stop to let it cool down, as I open the cap on the overflow bottle thats when the water come boiling out.
I then refil the rad, while sitting in the car waiting for it to cool down, a loud boiling sound can be heard coming from the overflow bottle. The car will not start until the temp gauge shows on the half way mark

Thanx in advance
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Friday, March 31st, 2017 AT 1:42 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,133 POSTS
I would start by replacing the thermostat and having the radiator and engine block flushed.

Let me know if that helps. It should.

Joe
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Friday, March 31st, 2017 AT 1:42 PM (Merged)

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