Question about Ford Escort

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Changed thermostat,relay,tophose everything,radiator switch,.still the engine gets heated if we run the car above 50km/hr speed.It is normal when we drive inside 50km/hr.Radiator fan also not rotating.wht will be the problem?

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Sounds like your fan belt is glazed or loose. At higher speeds the belt slips over waterpump and doesn't drive pump fast enough to circulate coolant. That would be first thing I would check...
Other possibilities: waterpump, blocked heater core, fan clutch.

Posted on Mar 12, 2011

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Posted on Jan 02, 2017

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2 Answers

How do I know my cooling fans are working


There a a few tests you can conduct here. Firstly, put power directly to your fan(s) Run two new wires directly from the battery to the + and - of the fan motor. Be careful doing this, as there is a risk of shorting the battery to earth. Maybe connect up the fan end before touching the wires onto the battery terminals. This will prove if your fans actually work. They should spin up to speed. Next, test the fan thermostat. There should be a terminal connection somewhere. One side of the fan wires would be connected to the thermostat. You will likely need a voltmeter to do this test. The thermostat is just a switch that should operate after a certain temperature is reached. Normally you would have to remove the thermostat from the car engine to test it, but it might be possible to test it when it's still installed. Next, test or replace the radiator thermostat. If coolant is unable to flow through the radiator after the engine warms up, you will get overheating. After a short warmup period, the radiator thermostat should open and allow coolant to flow through the engine block. Next, when the engine is running, check the exhaust pipe for water. Some water might be normal, until the engine is hot, but if a lot of water is evident, then maybe the block has been cracked. Best test for that is a cylinder compression test, with a compression gauge. Lastly, please do something positive about this. There is a great danger you will crack the engine block, especially if you are adding cold water/coolant to a very hot engine. Remember: does the fan run off direct power? Is the fan thermostat switching correctly? Does the radiator thermostat work correctly? Is the water pump working correctly? Hope this helps. Regards,

Oct 06, 2014 | 1999 Oldsmobile Cutlass

1 Answer

Radiator fans will not turn on.


replace fan switch. depending what make vehicle, it could be located
on the side of radiator, on thermostat housing, on cylinder head.

Apr 03, 2014 | Chrysler Grand Cars & Trucks

1 Answer

I have a 1991 Ford Ranger 2.9,and I am having a heat problem I did change the thermostat but no heat yet,this is what I found so far. I checked top radiator and its hot,the bottom hose on radiator is cold....


ok in the engine compartment look at the radiator with the engine cold NOT ON" squeeze the hose with your fingers and feel if hose is crunchy or brittle if is possible a block could have happen locations /points at the vacuum heater valve gate on the heater hoses or a clogged up lower heater hose get a water hose and back flush the heater's hoses normal travel of water is from bottom to top so put the water hose to the tophose and flush backward and try to move the heater valve by finger and see if you get flow (mind you with hoses of the radiator DONT CRANK YOUR ENGINE)

Sep 10, 2013 | Ford Cars & Trucks

1 Answer

Caprice 2002 model : At speed of 110 km, suddenly my car got heated, then i changed Radiator and scared of going at a speed of 110 or more...Whether it is rectified or still something else needs to be...


first, need to check the cars thermostat, it may be that you need to change this to a lesser high side temp.instead of a 185* go with a 165* or similar one, secondly make sure the system is circulating properly and all cooling parts, (fans, belts, shrouds etc ) are working good.I am assuming that these speeds are highway numbers close to or near normal.. 100km/hr is 60mph so 110km/hr is around 65mph so at hiway speeds the system should be ok..unless theres a bad gasket somewhere, usually a head gasket because thats where the engine pressure is the greatest..an easy test is to take your radiator overflow hose lose at the reservoir and dunk the end in a cup of water with the engine running, look for consistent air bubbles in the water this translates to engine pressure entering the cooling area and forcing the coolant out, thus reducing the capability of the system to cool properly..thus it calls for an upper engine gasket replacement, and this is time consuming..it takes me a couple of days to do.good luck

Jan 13, 2013 | Cars & Trucks

2 Answers

Engine over heats


Check for collapsed radiator hose first.

Do the cooling fans come on? If not, check fuse, relay and if still no function- fan thermostat switch.

If fans do come on, replace water pump.

Jan 24, 2012 | 2001 Plymouth Neon

1 Answer

Water is over heating when air conditioner is running. Temp is fine when air conditioner is off. Changed radiator fluid and thermostat. Fan is running and water pump seems to be ok.


My suspicion is that the fans may be coming on but they are not picking up speed when you turn on the A/C. Your car would have some of relay to control the speed of the fan whenever the A/C was turned on. This relay system would also increase the speed at which the fans run when the engine heat turns them on too.

Try starting the car cold and turning on the A/C right. Even though the engine is cold the rad fan should start up when you switch on the A/C. Once the engine gets hot the fan speed should increase accordingly when you switch on the A/C.

I'm not familiar with how Chrysler makes this work so I'm unsure what to repair but this is most likely your problem. Hope this helps.

Aug 14, 2011 | Chrysler PT Cruiser Cars & Trucks

1 Answer

Replaced thermostat, radiator on it, still over heats after about 15 minutes on idle.. Fan never seems to change speeds and idle jumps at higher temperature. Any Ideas?? Thanks!


When engine running, ensure no engine combustion gas bubbles in coolant resevoir (if so, the head gasket is blown).

Check radiator cooling fans are operating ok (as required when car warms up) - if not check
1) fuse,
2) relay operation,
3) heat sensor switch.

Check for collapsing (soft) coolant hose on suction side of waterpump when engine revs above idle.
Check the coolant pressure cap is serviceable & of correct rating,
Ensure cooling system is correctly filled, bleed off any airlocks as necessary,
Check radiator cooling core is not blocked internally or externally.

Jan 17, 2010 | Ford F-150 Cars & Trucks

2 Answers

My VW Cabrio is overheating after 1-2 miles. Coolant in recovery tank is boiling by this time and making bubbling noises. Someone changed radiator hoses, flange, some housing. They are saying that radiator...



Run the engine and look at the header tank , is there lots of air bubbles coming back out of the water if is then the head gasket may have split and that is down to either a can of Radweld or a strip down repair

If the radiator is not uniformly hot them I would go for that as your problem

Normal operation is that the engine starts the thermostat is closed , engine block heats up and opens water starts to circulate around the block

So to check that you need to fill the radiator with cold water run it for a few minutes check the bottom hose it should be cold

The stat opens and the bottom hose should get hot as the water from the block is pumped into the radiator for cooling.

The radiator should get hot all over and the cooling fan should kick in when the sensor hits the over limit stop.

If that does not happen then get someone to remove the stat altogether (It is only there to get the engine block warm quickly in cold regions )

In which case the bottom hose should go from cold to warm to hot

Jun 23, 2009 | 1997 Volkswagen Jetta

2 Answers

Overheating


Sounds like the temperature thermostat is stuck closed. It is usually located at the top front of the engine in the small manifold that the radiator pipe connects to.You can test it on the stove - they open widely above 90 degrees C

May 12, 2009 | Peugeot 405 Cars & Trucks

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