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I change the radiator, water pump, fan belt, termostat and still over heat went going up hill.

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I would check if the system is properly bled, and if it is, do a check on the oil as it might be the worst of all: head gasket.

Posted on Aug 25, 2010


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1995 sentra heat problem.i done the head and replaced the water pump and redaitor cap and just had the head skimmed when i go on a hill its heating

Did you change the thermostat. It might be stuck halfway open. When you start to go up a hill, the engine heats up more, the thermostat needs to open more, to let more coolant by to the radiator.

Mar 31, 2014 | 1995 Nissan Sentra

1 Answer

My 1993 sl2 saturn its over heating i already change termostat and replace anti freese they gave me the green one so i mix it with water bt it still over heating the fan works only when i put on the a/c...

It could be the water pump. To check this:
  • Make sure the engine is not hot and open up the radiator cap.
  • Turn on the car and let it idle with the cap off.
  • Allow the car to warm up.
  • When the engine is hot and it is getting close to overheating, look down into the radiator. The coolant should flow. (It should look like a little river is going past the radiator opening). If the coolant appears to be still then your water pump is bad.

Other possible problems:
  • Bad coolant temperature sensor.
  • Air bubble in the cooling system.

May 25, 2011 | 1993 Saturn SL2

1 Answer

The water boils out of the coolant surge tank, and also is over heating

try change out thermostat maybe staying shut-radiator fins plugged wash out outside with hose and water. radiator may be plugged in cooling tubes flush out cooling system-check fan and water pump belt-fan bearings or water pump could be going bad and not moving water

Jan 17, 2011 | 2004 Chevrolet Aveo

1 Answer

Antifreeze is not circulating through radiator. Radiator is new - 2 months old. Also, no heat and fast idle.

Problem is not your radiator--unfortunate for you. It's more likely the water pump. The water pump pumps the water around through your radiator to be cooled and then through the engine block to cool your motor. Before you go tearing the water pump out though, you may want to check to see if your fan belt is in good condition and working properly because the water pump works off of the fan belt turning the pulley to pump the water around. If the fan belt is off that pulley, it may need to be put back on or re-routed correctly to start pumping the water.

Then if that is not your problem, the water pump will probably need to be replaced. I believe it can be accessed from underneath the engine compartment, but first you will have to take the tension off the fan belt and remove the belt, then loosen the bolts around the front of the water pump. Put a catch pan under the car though because all your water/antifreeze will come gushing out. That water pump should be available at your local AutoZone or another auto parts store for around $100.

Nov 17, 2010 | 2001 Chevrolet Blazer

1 Answer

2nd radiator fan, dose it turn on when over heating?

first of all your car shouldnot be overheating. if itis, check your antifreeze level in your radiator, for a leak, hose, water pump etc. termostat. And yes both fans should be on, that is controled by the pcm.For that is used a temperature sensor. and if the fan it never turns on check the fan and relay. electrical conection too. hope this will help you.

Sep 15, 2010 | 1989 Jeep Cherokee

1 Answer


Did you also flush the engine block? When the water jackets inside the block dry out, the scale and muck attached the the jacket walls detaches and is carriend by the water into the top radiator tank. Here it sits on top of the tubes blocking off some of them. The engine will get hot now, but it won't boil. I'd advise you to add cooling system cleaner to the radiator and drive for about 30mins. Then, reverse flush radiator again and reverse flush the engine block too. (the thermostat has to be removed to do this)

Apr 20, 2010 | 1995 Honda Accord

1 Answer

Dodge Neon 1998 DOHC Overheats when off the accelerator

It sounds like your coolant level may be too low. When you drive up hill the coolant will tend to flow into your engine block and help to cool it down. When you drive down hill the coolant will tend to flow out of the engine block and into the radiator. This may allow the engine block to overheat. I recommend checking your coolant level. If you need to add coolant use a 50/50 mixture of water and antifreeze. If your coolant level is low you may have a leak. Look for the leak while the engine is hot.

I'd also check to make sure your electric cooling fan is working. Let the engine warm up with the car idling in park. Watch to see if the fan ever turns on. If the fan doesn't turn on the problem could be caused by the fan itself, a fan relay, or a temperature sensor.

Jun 02, 2009 | 1995 Honda Passport

2 Answers


If you have seen the signs of leakage around the water pump thn its worth replacing it being that far already.
Its better too, to flush the radiator.
Usually if the seal blows thts the end of the pump even if it looks ok!

May 07, 2009 | 1994 Honda Passport

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