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Engine overheating on tickover on 1993 shogun pajero

I have had cylinder head done new water pump thermostat and replaced radiator

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  • 197 Answers

Could be a few things - thermostat stuck shut?
Hole in radiator? cap not sealing? Blockage in block/hoses?
Water pump? faulty water temp gauge? check pressure of system by doing a pressure test and check for any leakage

Posted on May 04, 2017

  • 4 more comments 
  • jacqui mack
    jacqui mack May 04, 2017

    It has had new thermostat new radiator and new water pump and has had the head gasket done too its only when the engine is idle that the temp rises

  • Adam Plug
    Adam Plug May 04, 2017

    are the thermostatic fans turning on? if not then it could be the relays that operate the fans

  • Adam Plug
    Adam Plug May 04, 2017

    Most cars do get hotter whilst idling as there is no wind going past the radiator to cool it down but normally the fans turn on at a certain temperature to ensure it doesnt overheat...

  • jacqui mack
    jacqui mack May 05, 2017

    Yes fans are turning on but its looking like its still the head gasket as I've got oil spewing out and its not pressurising on getting a second opinion of the work done

  • Adam Plug
    Adam Plug May 05, 2017

    yea good idea... that would really p*ss me off! Hope all goes well... By the way if you do find out that it is the head, return it to the original repairers and make sure any work done from here is warranty! Get on their case too!!

  • jacqui mack
    jacqui mack May 05, 2017

    Don't worry I've been on to them not happy I love my shogun and just want her fixed properly I'll update when I find out exactly what's going on thank you

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Mitsubishi shogun 2004 2.5TD


Hi There, How about letting us know your given name, seems friendlier when answering your questions? Okay the problem your friend is having can be caused by something very inexpensive, the radiator cap, or as expensive as a replacement cylinder head. I suggest having the pressure cap tested which means using a cooling system test kit. If the release pressure of the radiator cap has become too low, coolant will be expelled. Also have the radiator tested. If there is a pressure drop look for where the leakage occurs. Other common places of leakage are from core plugs on the engine block and the water pump. Leakage from the pump is many times only evident with the engine running, but be careful only to observe and not to touch anywhere dangerous. If there is a pressure drop but with no evidence of leakage from the parts already mentioned but no leakages are evident, check inside the cabin to be sure that the leakage is not from the cabin climate control. Pressure should be maintained for at least fifteen minutes a little above the pressure stamped onto the radiator pressure cap. If all else fails it is time to suspect the cylinder and cylinder head gasket. If the cylinder head gasket is blown it can sometimes result in a mixture of oil and coolant, evident from the changed colour of the engine oil, but can also leak into the cooling system and result in the symptoms you report. If the engine is petrol with an alloy head, skimming and a replacement of the gasket will usually sort out the problem. If it has a diesel engine with a cast head, the head may be cracked, requiring the cylinder head replacement. Regards John .

Jul 26, 2014 | 2002 Mitsubishi Pajero

1 Answer

My pajero GDI V75W 6G74 just cut out while moving and temp went up. My mech changed the gasket and skemed the head cylinders. its starting but no idling. now they are saying valves. availability of valves...


Hello,Got into the same situation and my mechanic explained to me all the "root-cause".Car driven with overheated engine because of water pump failure.Or cooling liquid gelling inside the radiator and blocked the cooling system.That could also have caused the water pump failure.
Anyways, my car is under repair as I am sending this e-mail to you.Mechanic said he will replace the gaskets after skimming the heads, then replace the water pump, then flush and clean the radiator and replace the thermostat.He will change the T-Belt as well (car has 75000 km).6 months warranty for this work.USD 1300 in total.
Hope this will solve my overheating problem.
Please tell me how did you went out from this? What happened?Id be very grateful if you/we can share this experience.Thanks in advance.
StanRelocated to Maputo/Mozambique

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Water into oil and white smoke... already check thermostat... 1993 lexus es300... can timing belt cause this? or what/


the engine is leaking coolant internally, via either a bad head gasket, cracked cylinder head, or cracked block.

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5 Answers

Overheating all the time


First, anytime a thermostat is overheated, it's ruined.

Second, if this car has electric fans, are they running when they are supposed to? If not, replace the fan control module, and/or test/replace the fan motors.

When the radiator was replaced, were you certain to purge the radiator and engine of all air before replacing the radiator cap? When you refill an emptied system, you always start the engine and watch the fill level in the radiator, refilling as necessary until you know the thermostat has opened. You need to have the heatrer controls set to full hot as well. Once the radiator is filled, put the cap in place, and fill the reservoir to the level indicated for a hot engine.

Finally, check to make sure the lower radiator hose is not collapsing while driving. While this is difficult to check (because your going down the road), just replace it when you replace the thermostat.

All of this assumes you do not have a cracked head or blown head gasket.

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Overheating 1993 toyota 4runner sr5 v6


Check to ensure your "NEW" radiator is circulating, check the thermostat make sure it is not stuck.
The ticking is probably a lifter Change the oil try a high mileage type. Raz,...

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3 Answers

Overheating when driving no mixing of the coolant and oil


The three most likely thing's cause overheating are faulty thermostat,electric fan or clogged radiator. Only at has been overheat so much it boils dry that it will cause engine trouble. Most common problem's are blown cylinder head gasket or a cracked cylinder head.
mixing coolant and water depends on where the gasket has blown or head is cracked. You will first need to check if it actually is overheating. The reason is. If the head is cracked or gasket blown then you can get a false boiling which is compresion from the cylinders blows through the crack in the head or gasket causing the coolant to blow out of the radiator cap.Fill the radiator to the top leave the cap off then start the engine.If the water blows out then you will need to remove the cylinder head check the gasket is ok. If its damaged replace if not get the head checked for crack's. If no water blow's when you start it check the thermostat is working properly. To check the thermostat put it a in a saucepan cover it with water bring the water to the boil. It should open before the water boil's but near boiling-point. If its ok then start the engine again leave it running until it boils and check the fan is running. If that's ok then its radiator problem. Their is no way to check if the radiator is ok you will need to get a new one. One last point. If the cylinder head or gasket are faulty it was caused by overheating so by just fixing the cylinder head problem is not a cure it will overheat again. Check the three things I mentioned at the begining and told you how to check them. Hope this help's. Cheer's

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1 Answer

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The rust is probably in the engine. There are many little pockets, water ways, water jackets (around the cylinders), etc, so getting all the rust out without dunking the block and heads in a cleaning tank is about imposible. I would recommend giving it really good flush every 4 to 6 months. I would try flushing the radiator before replacing it because it is probably not rusted, even though it is full of gunk.

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1 Answer

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Hi,

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.

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