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Have 1999 Montero 4M4T 2800 in Costa Rica. How many rows are required in radiator? 3 new head gaskets, re-built motor TWICE, new hose BEHIND motor or radiator, new cap, NOW mechanic says he WON'T put in new thermostat and we need more rows in radiator (new also). He did a compression test and it is fine. Installed 2 yrs. ago by authorized service station. Car STILL overheats going up hills.

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Have cooling system pressure tested for external and internal-combustion gas leak that is interfering with the normal engine water circulation. You may have a warped cylinder head. remove and replace thermostat only when it is defective but replace with a new one.

Posted on Jun 12, 2014

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Daihatsu charade 1.3 1996 model. I

The thermostat problem caused overheat, because overheat your head gasket maybe broke up and leak,
1. check the tail pipe see if there is steam blow out.
2. check the oil cap,see if there is steam white bubbles

If you got, that probably your gasket broken.

3. put a piece of cardboard in the front of the engine, open the radiator cap. fillup water.

4.start the engine and let's run at least 30 minutes, see whether it overheat or not.

5. check the radiator water, see if it is circling. if it is not circling, probably the water pump doesn't work.

6. you will find out whether leak or not.

The cheapest way to stop engine gasket leaking, if it is not too big, go to parts store get a bottle of good stop leak and try it. sometimes you can stop the leak area. good luck. Frank

Posted on Jul 27, 2008

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SOURCE: 1990 Subaru Liberty Overheats


I had the same problem with my 1993 Liberty LX. Remove the thermostat (located inside bottom radiator hose engine connection - take the connection off and thermostat is inside). Reassemble (minus thermostat), reconnect bottom hose. Slowly (very, very slowly) refill the radiator and remove the bleed plug ( located beside the top hose connection to the radiator - a black square plug with a phillips head cross in the middle). When the radiator is full and clear water (no air bubbles) is coming out of the bleed point, replace the bleed plug and then the radiator cap.

Run the engine for five minutes (approx) or until normal engine temperature is reached. Allow the engine to cool down and recheck the water level - fill if necessary ensuring that the bleed plug is open and clear water is coming out of that point. Replace Bleed plug and then radiator cap. Run engine for five minutes (approx) and then test dive. If the engine overheats keep filling the radiator until there are no air bubbles coming from out of the bleed point.

This fixed my overheating problem. Good luck and safe motoring.

Posted on Sep 21, 2008

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SOURCE: 1997 olds. auora overheating

feel of the top hose, if it's soft when the car is running and at operating temperature then it's probably air in the system, not allowing the pump to pick up the antifreeze. To get the air out let the car cool completely (like overnight) then fill the reservoir, leave the cap off and run the car until it comes up to normal operating temp. (watch to see you keep enough antifreeze so the tank doesn't go empty.
My 97 Aurora did the same thing and this fixed it.

Posted on Jan 19, 2009

  • 8 Answers

SOURCE: I have a Nissan Patrol Y60 TD42. It overheats

sounds like something clogged in the block its self try to find an acid flush and flush the system a few times untill it comes out clean

Posted on May 16, 2009

  • 6826 Answers

SOURCE: 95 trooper overheats but replaced thermostat,radiator,cap,hoses.

make sure ur fan clutch is puling some air and replace rad cap with new onr u may have to replace radiator long trips not getting enough water cooled

Posted on Jun 30, 2009

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I have 2005 montero 3.8 and is overheatting we change the water pump, clean the radiator, replaces all houses and the problem continue. so if some body tell me what else we have to do.?

those motors do not like overheats
very lucky not to have done head gaskets
good job
water pump that meant taking the timing belt off
good . replaced the hoses
soft/old radiator hoses collapse when hot restricting coolant flow
check these

open heater fan on full and engine running
to release trapped air in heater hoses
new thermostat and cap
engine cooling fan spinning too slowly (replace)
thermostatic fan switch faulty (replace)


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Sounds very much like a blown head gasket, could also have a cracked or warped head...

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Could be several issues:

1. The radiator is blocked internally or externally with road and insect debris.
2. The radiator fan may not be working. There's a control sensor on the bottom of the radiator that controls a relay that drives the fan. Fan motors can seize. Can you easily rotate the fan?
3. MIGHT be a head gasket on the way out. Have your garage do a compression and leak down test.

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Did you bleed the air from the cooling system as outlined in the factory service manual? Has the radiator been cleaned by a professional radiator repair shop, is the head cracked? You had it tested for cracks? It is one of these most likely that is causing the problem or a combination of them.

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1 Answer

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My Pajero 2800 Turbo Diesel blows water into overflow tank

Have a look at the thermostat.
If it's blocked shut, there won't be the circulation through the rad.
You may need to invest in some 'radweld' type treatment too.
Good luck with that.
Don't forget to rate, thanks ;)

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I have a 1999 ford taurus with the 3.0 sohc we have replaced the thermostat and the pressure cap and it still keeps blowing out coolant what else could be wrong?

I assume its overheating.
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Check radiator core is not blocked,
Check operation of cooling fans.
Check the coolant system is correctly filled - any airlocks cleared (by bleeding as may be required).
Check radiator hose on suction side of waterpump not (soft) collapsing when engine speed above idle,

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I got my book from 
good luck  Grace

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