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Renaut 5 camps prima - 94M Engine overheating

Absolute nightmare here!!! Engine is overheating, water doesn't seem to be flowing round the system. Have checked theromstat in saucepan of hot water, have replaced water pump. Have bleed the system. Still no joy. I'm baffled as the water doesn't seem to circulate at all. Any help much appreciated

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  • jethroseaton Feb 16, 2009

    The garage said the head gasket is blown as that is why the water is not circulating and that is causing the steam

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If your head gasket has blown that will explain it all

Posted on Jul 12, 2010

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Check that the water pump is working, if water is not circulating, the most likely it is a faulty water pump.
You may need to replace the water pump.

Posted on Feb 08, 2009

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Try removing the thermostat and then remove the bleeder screw, put in the water hose in the radiator/expansion tank and see if the water comes out with pressure. If yes the system is not restricted but otherwise probably the radiator is blocked.

Posted on Feb 08, 2009

  • Armel Aubeelack
    Armel Aubeelack Feb 17, 2009

    Didi you bleed it the proper way? They are preety special when it comes to bleeding and if there are air pockets in the radiator, the water will not circulate. Have you tried removing the thermostat completely?

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I have a 2002 Lincoln with an overheating problem and also does not have heat.It has 91000 miles on it. It will say its overheating and the engine power is reduced. I'll turn it off let it set a few...


Hello,

when the car overheats, is there still water in the radiator?

If there is water in the radiator and the car overheats, then it means there might be some dirt or blockage in the radiator or condenser.

When the car is on the motion, air passes through the front and assists the fan to cool the engine. There are situation whereby air doesn't have free flow because of blockage in the radiator and condenser. Dust and debris can cause blockage. If this be the case, have your radiator washed thoroughly and cleaned.

If there is no water in the radiator when the car overheats, then there is a probably a leakage from the water pump. Or maybe your fan isn't blowing properly. The fan might be blowing weak air.

The above are what could cause your engine to over heat.

So start the check from the radiator. Poor water into the radiator, wait for some minutes, look under the car and observe if water is going to leak. If there is a leak, it might be from the water pump or a leaking hose.

If water from radiator has no leak, have your radiator washed and clean the condenser has they might block air that is suppose to cool the engine.

Also, make sure your fan is blowing properly or well enough to cool the engine.

Make sure you have the above checked thoroughly as they are the major causes of problems like this.

This overheating problem could lead to a burnt gasket and this can dry the engine oil which will eventually knock the engine. So have this problem fixed to prevent further damage that will cost you more money.

Lastly, remove the hose that connects the radiator to the engine, water from the engine will come out. Pour water into the radiator, the water will flow through the hose down to the ground. Do this severally. Now connect the hose back to the engine, pour water into the radiator. Start the engine, the water in the radiator will reduce, add more water till radiator is full.

In summary, the major cause of over heating problem is from the radiator, fan, water pump, blockage in the hose, and dirt in in/on the condenser. These are area you need to concentrate on.

I forgot to mention that the acceleration meter or engine meter on the dash board shouldn't be more the 5. It should be below 5. If it is above 5, it can cause overheating. I hope you understand what I mean.....

Regards.

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1 Answer

Acts like its overheating, the antifreeze looks like its boiling when the car is running is that a sign of gaskets or it running into the oil pan itself? the cruise light comes on as its dieing.


Overheating can stall the fuel supply reduce the fuel flow and also can be related to failure of ignition, if igntion system fails.
The overheating of the car can be due to many reasons and you need to check on each one to confirm the working of the system.
1. In the first place the working of the engine must be assessed. it must be smooth with a good indication that the tuning timing and the power seems good. This will confirm that the settings of the engine is good and so there is less scope that the engine seems to heat up on its own.
2. Secondly the radiator pressure cap must be tight and good, the radiator MUST not loose coolant after a run or in a few days time- since this must be a sealed system and there is no scope of water overflow or loss unless there is a leak- sometimes the leak is too microscopic as under high pressure only steam might escape and so reduce the coolant. So check for leaks while the engine is hot , specially the radiator, the hose or the fittings.
3. The working of the water pump must be good to ensure a good flow and circulation, so check for leak in the water pump, check for presence of water in the exhaust or leaking on the engine gaskets.
4.Make sure that the coolant is good and clean if not drain and refill , if there is presence of rust please have a good flushing of the radiator or else the chances are that the radiator ports can be blocked and reduce the efficiency of the cooling .
5. Finally the cooling fan, the radiator fan must be working, check the thermostat/thermistor to work accordingly with good flow, have a good water jet wash on the radiator for a clean radiator cooling fin exposure

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1 Answer

My car runs hot and leaks antifreeze. I have replaced the thermostat and water pump. It doesn't do it constantly, it can go all day with out doing it and sometimes it leaks like crazy.


The overheating of the car can be due to many reasons and you need to check on each one to confirm the working of the system.
1. In the first place the working of the engine must be assessed. it must be smooth with a good indication that the tuning timing and the power seems good. This will confirm that the settings of the engine is good and so there is less scope that the engine seems to heat up on its own.
2. Secondly the radiator pressure cap must be tight and good, the radiator MUST not loose coolant after a run or in a few days time- since this must be a sealed system and there is no scope of water overflow or loss unless there is a leak- sometimes the leak is too microscopic as under high pressure only steam might escape and so reduce the coolant. So check for leaks while the engine is hot , specially the radiator, the hose or the fittings.
3. The working of the water pump must be good to ensure a good flow and circulation, so check for leak in the water pump, check for presence of water in the exhaust or leaking on the engine gaskets.
4.Make sure that the coolant is good and clean if not drain and refill , if there is presence of rust please have a good flushing of the radiator or else the chances are that the radiator ports can be blocked and reduce the efficiency of the cooling .
5. Finally the cooling fan, the radiator fan must be working, check the thermostat/thermistor to work accordingly with good flow, have a good water jet wash on the radiator for a clean radiator cooling fin exposure.

Thank you for using Fixya

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3 Answers

Took out the thermostat, replaced the radiator, the water is circulating in the radiator but it is still running hot. what do i do next?


Overheating can seriously damage a car's engine if left unchecked. Although overheating simply means that a car's engine temperature exceeds normal operating temperatures, the causes of overheating are varied. What follows is a brief list of some of the most common causes of engine overheating.

    Faulty Radiator
  1. A car that overheats will often have a faulty radiator. A radiator is responsible for cooling hot engine coolant that picks up heat from inside a car's running engine. A radiator "radiates" the heat from engine coolant out into the outside air. A faulty radiator loses its "radiating" effects and allows engine coolant to become overheated, thus rendering it ineffective at adequately cooling and engine.
  2. Faulty Water Pump
  3. A faulty or malfunctioning water pump prevents adequate engine coolant flow and can cause a car to overheat. A water pump serves to pressurize and propel engine coolant throughout a car's engine and radiator to increase the heat-reducing capabilities of engine coolant. A faulty water pump loses its ability to adequately pump and propel engine coolant, and can cause a car to overheat.
  4. Coolant System Leaks
  5. A leaky engine coolant system reduces the level of circulating engine coolant, which increases engine temperature and leads to engine overheating. Radiators, water pumps, and coolant system hoses and seals--all of these coolant system parts can develop leaks, which can result in low coolant levels and engine overheating.
  6. Faulty Thermostat
  7. A car thermostat regulates the flow of engine coolant. A thermostat is a heat-sensitive valve that opens when a car engine reaches a set operating temperature and closes when a car engine is cold and warming up. If a thermostat gets stuck in the closed position, coolant will be prevented from reaching the engine, which will quickly lead to engine overheating and potential engine damage.
  8. Low Engine Oil Level
  9. Engine oil, in addition to lubricating an engine's internal parts, helps to keep engine operating temperatures reduced by eliminating friction within the engine. If engine oil levels are low, friction and heat build up inside an engine, a condition that causes increased engine operating temperatures and can lead to engine overheating.

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First-change the thermostat and bleed the system.If the problem is still there change the water pump.

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3. LEAK in COOLING SYSTEM
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