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Car running hot

Tiny
AMBERNICOLEC
  • MEMBER
  • 2001 CHEVROLET IMPALA
Why is my car running hot? The coolant is leaking out of the manifold and the temperature keeps going up and down. When I add more coolant it gets hotter.
Tuesday, January 12th, 2010 AT 8:48 PM

17 Replies

Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
It's getting hot because the coolant is leaking out of the manifold.

In order for your cooling system to function correctly, it needs to maintain a certain pressure. Usually around 12-15 PSI.

This guide can help us

https://www.2carpros.com/articles/engine-overheating-or-running-hot

If your intake manifold gasket is leaking, then it's not allowing the pressure to build up, and your coolant is boiling.
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Wednesday, January 13th, 2010 AT 10:05 AM
Tiny
STROKE
  • MEMBER
  • 1 POST
  • 2001 CHEVROLET IMPALA
Engine Cooling problem
2001 Chevy Impala 6 cyl Front Wheel Drive Automatic

I change the water pump. The car is still running hot. There are no leaks. How can I tell if it is the thermostat or the temp switch
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
RHALL77
  • MECHANIC
  • 3,361 POSTS
First make sure that you bleed the cooling system completely. You can tell if it is a temp switch by using a code scanner that has a data stream
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
LIQUIDLOVE4U2
  • MEMBER
  • 3 POSTS
  • 2001 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 124,000 MILES
Why am I not getting pressure from the radiator car still running hot.
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Are you actually overheating? Try replacing the the radiator cap
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
LIQUIDLOVE4U2
  • MEMBER
  • 3 POSTS
Yes it's still running hot. I replaced the head gasket, thermastat, Water pump an it's still running hot and there is still no pressure coming from the radiator to the engine or vise versa. Car is blowing cool air with the heater on high.
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Recheck the themostat and try bleeding the cooling system out could be airlock
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
LIQUIDLOVE4U2
  • MEMBER
  • 3 POSTS
Tried flushing & rechecked the thermostat but there is still no flow to the radiator. What could this be Please hellp me.
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the water pump

One way to test for a bad water pump is to squeeze the upper radiator hose when the engine is hot and idling. Careful, because the hose will be HOT! If you do not feel much coolant circulating through the hose when you rev the engine, the pump may be bad. The other cause might be a bad thermostat that is not opening properly (remove and inspect the thermostat), or a clogged radiator.
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
RALO
  • MEMBER
  • 2 POSTS
  • 2000 CHEVROLET IMPALA
My 2000 Chevy Impala temperature gauge is indicating that the engine is running hot, but the engine is cool. A/C works on and off. I have already ready replaced the thermostat and also replaced the temp gauge sensor, but the temperature gauge still indicate I have replaced both fans, thermostat, and temp. Gauge sensor.
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
RALO
  • MEMBER
  • 2 POSTS
My 2000 Chevy Impala temperature gauge is indicating that the engine is running hot, but the engine is not showing signs of running hot or leaking cooliant. I have already ready replaced both fans, thermostat and also replaced the temp guage sensor, but the temperature guage still indicates that the car tempature is hot. Any solution to this problem?
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
If the gauge goes past 3/4 and you have installed the proper thermostat. You need to buy a auto therometer to put in the radiator to check coolant temputure. If the engines hot you should be hearing the engine pinging.
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
KEVIN VOSS
  • MEMBER
  • 2 POSTS
I have the same problem with a '95 Buick Century with the 3.1 V6. When I bought it the previous owner said it has always been like that and the car never overheats at all. I replaced the coolant temp sensor figuring it was bad but that didn't fix it. I heard that there is a computer temperature sensor apparently behind the thermostat housing but I can't find one. I bled the cooling system but didn't notice any air coming out, just coolant. Everything seems fine just the gauge reads high and it gets there in about two minutes after starting the engine and stays right up at the red zone. Of course I'd like to fix it but not sure what to check next and I have run it hard and then stopped and felt under the hood and feel no excessive heat at all, just seems a normal temperature. No pinging, no problems, thing runs great, plenty of power at 75000 miles.
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
DAPHNE EVERETT
  • MEMBER
  • 1 POST
  • 2000 CHEVROLET IMPALA
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 192,680 MILES
I have a 2000 chevy impala and its been running hot and anti freeze will not stay in it. My heater will not work in it and sometimes it have a smell to it. When I drive it all of the water or antifreeze runs out of it then smoke be coming from the engine on one side of the car its white smoke.
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
WOW need to find the leak and fix it before you damage the engine from overheating it. The heater wont work due to the fact there probably isnt any anti-freeze in the heater core. Need to take care of th eleak ASAP. It will always run hot/overheat if thecooling system cant hold pressure, that is what helps keep the coolant from boiling.I also suggest having a new thermostat installed
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Monday, April 27th, 2020 AT 1:02 PM (Merged)
Tiny
AMJMOM2001
  • MEMBER
  • 1 POST
  • 1995 CHEVROLET IMPALA
Engine Cooling problem
1995 Chevy Impala V8 Two Wheel Drive Automatic

Hello-

My car is still running hot and I changed the thermostat and water pump. What else do I need to check?
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Monday, April 27th, 2020 AT 1:03 PM (Merged)
Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
Try back flushing the system. Also check to see if there is any build up of leave or anything between the radiator and ac/ condensor restricting air flow through the radiator.
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Monday, April 27th, 2020 AT 1:03 PM (Merged)

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