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Motor caravan overheating so we started to eliminate the problem with a good flush of the system, new radiator new thermostat and a working water pump,temperature still rises over 190 when climbing hills. This occurs in the south of spain where it is quite hot this time of the year. Advice would be appreciated.

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Next thing to check is ignition timing. If something has happened to change the timing, that can cause overheat also. Also, need to make sure that timing advances properly under increased load.

Posted on Jul 09, 2008


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Message light states that engine is overheated and engine must be shut off

The loud fan is probably normal for your car but it is possible the fan blades are touching the cowling as it spin or the bearings are on the way out. For the moment, don't worry about the noise because at least it is working and you need to concentrate on the cause of overheating. Assuming you have enough coolant in the system it sounds like a recirculation problem. This could be caused by any of the following:
  • Blocked flow which could be a pipe, radiator or where the coolant flows inside the engine
  • A faulty water pump, so not pumping round system
  • A faulty thermostat that is not opening at temperature
There are several things you can do and is simply a case of eliminating the causes one at a time.
Start with the thermostat and remove it from its housing and either leave it out (for now) and refit the housing to seal the system. See if that helps because coolant is pumped around the engine at start up and once hot the thermostat opens and allows it to flow through the radiator to be cooled as air passes the radiator. That eliminates the thermostat as the cause if it still overheats.
Next, disconnect the bottom and top hoses from the radiator and try to flush through the radiator with a hosepipe and see if there is a flow through it to eliminate a blocked radiator.
Then do the same to flush out the engine.
I always prefer to flush from the bottom and overflow out of the top wherever possible as this lifts any blockages and air pockets, but if it won't flow one way then try the other way. From top to bottom flow, you can't be sure that the flush water is just trickling through as gravity will let it run downwards anyway.
If everything flushes properly and running without a thermostat still causes overheating then it may well be a water pump problem.

Oct 19, 2015 | Cars & Trucks

3 Answers

What might the issue be with my 2002 dodge caravan overheating?

Hi, No you did not break anything. It just happened by coinsident.
You need to replace the thermostat and put new fluid in. Not just water. If it happens again do a radiator flush and check if fan is working properly. Good luck.

Jan 07, 2015 | 2002 Dodge Caravan

1 Answer

Engine overheated , got second hand engine but still overheating after new Radiator and thermostat. What could be the problem

-Remove the thermostat and flush the engine back and forward couple time with water. Then re install the thermostat back to. Make sure the thermostat's spring or bottom go inside the engine.
-Make sure the water pump is in good shape, belt drive the water pump must be good tight.
-Try this you should be good to go.

Good luck

Mai Lor

Nov 04, 2014 | Cars & Trucks

1 Answer

Was overheating changed the water pump but still overheating

remove thermostat permanent for week and fit clean water and radiator flush 80 to 100 mg every 2 days then flush your system engine and radiator fit new cup ,new thermostat new antifreeze bleed your system,check for leeks and loose belt.if still overheating try t /k test.

Sep 01, 2012 | Cooling System for Mercedes-Benz C230...

1 Answer

2007 daihatsu terios overheating

air lock or thermostat stuck try flushing with hose pipe

Aug 12, 2012 | 2007 Daihatsu Terios 1.5i

1 Answer

Over heat

Most common problem with overheating is the thermostat. This is not the only thing that will cause your vehicle to overheat though. Things to consider, does the fan turn on, can you see coolant flowing when the radiator cap is off, what is the condition of the radiator cap, when is the last time you had your system flushed and filled?...If your fan does not kick on have you tested the fan motor? Have you bleed the system of air? .... try starting with the thermostat.

Aug 09, 2012 | 1997 Dodge Caravan

2 Answers

2005 pontiac aztek-overheating,has coolant,new theromast and fuel filter

Air in the system , bad water pump , cooling fans not working ! Maybe you should take to a shop ?

Jan 21, 2012 | 2005 Pontiac Aztek

1 Answer

Ok, g35 coupe 06,52k miles Had over heating problem in april 2010,replaced thermostat, all's well. Now Jan 2011 overheating again, noticed upper & lower radiator hoses collapse, changed thermostat...

Heres a couple of things you can check. Start your car and remove the radiator cap,(before it gets hot mind you) when it reaches norm operating temp, look inside radiator to see if water is circulating. If its not moving, its a bad water pump. Also, youre hoses should never collapse, if they collapse when they get hot maybe you need new hoses? Finally, if those dont work, flush out your radiator. Open the bottom cockpit and use a garden hose and let it flush out the system while the car is running, about 10 mins should do the trick. If the radiator looks clean inside then it doesnt need flushed.

Jan 04, 2011 | 2006 Infiniti G35

2 Answers


remove radiator and power wash fins they could be blocked then install again then get a good engine flush drain water then refill with flush and water then start and drive read the flush bottle for instructions then let all out again then refil with clean water and a good coolant , remember to blead the system when filling every time you drain water etc, hope this helps. it will work.

Aug 24, 2009 | 1992 Cadillac Seville

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