Question about 1993 Toyota Land Cruiser

1 Answer

1993 Toyota Land Cruiser Over Heating

I have a good radiator (been tested and cleaned, great flow), the head gasket has been replaced, the fan clutch has been replaced, the thermastat has been replaced, the water pump has been replaced and I am about to remove the therostat and le *** run with out one to see if that solves the over heating problem. The engine light just came on again. It came on before I had the head work done, and went away after the work. Now it is back on again, that part worries me. I am at a loss. It does okay at fast speeds, in town is bad. Any help or suggestions are greatly appreciated.

Posted by on

  • 2 more comments 
  • mikefwb Sep 21, 2009

    It seems to be okay at high speeds, traffic and stop lights is where it overheats.

  • mikefwb Sep 21, 2009

    Engine light code: I do not know, I tried to purchase a tester but was told they only go back to 1996 vehicles, mine is a 1993.

  • Chemist1961 May 11, 2010

    Have you flushed the actual cooling system?

  • Superbovine May 11, 2010

    So it is overheating at low speed/stop and go traffic? What was the engine light code that was set, and the current code that is set?



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 333 Answers

It would appear you have an airflow problem. Driving at highway speed the radiator is getting adequate cooling, but at low speed and stop lights you are not.

Run your vehicle up to operating temperature a then shut it off.
Open the hood and grab the fan blade and give it a spin. It should be very hard to turn (possible, but not free). If it spins relatively free, your viscous clutch needs replacement or fluid changed.
When this happens you have insufficient airflow across the radiator at low speeds. It is unnoticeable at high speed as you have driving airflow to cool the radiator.

To check your check engine light, Located the DLC1 connector pictured and short pins TE1 and E1 with the ignition on, parking brake set, vehicle in neutral.
Your check engine light will flash the codes at you. 2 flashes, long pause, one flash, long pause would be a code 21, for example.

To clear the code remove the EFI 15A fuse under the hood for 1 minute.

Posted on Sep 21, 2009

  • Superbovine Sep 21, 2009

    Sorry I forgot fromt he first time I read you had replaced the clutch already. Still check it just in case, as this is definitely an airflow issue, and if the radiator is flowing with no blockages and there are no external obstructions, there is very little else it could be.

    If the thermostat was only opening partially, that could be an issue, slight longshot, but there isn't anything else left to replace!

    If it a go, and find out what those check engine light codes are.

  • Superbovine Sep 21, 2009

    Gah, picture did not post again



1 Suggested Answer

  • 2 Answers

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

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

F150 over heating coolant coming out of over flow under raditaior cap

have a compression test done to check for head gasket or cracked head
have a flow test done on the radiator to check for blocked cores
if you have a viscous fan hub ( fan clutch) replace it
remove and test the thermostat
check for air lock in the cooling system

Nov 06, 2015 | Ford Cars & Trucks

1 Answer

1992 80 series land cruiser 1hdt pushing coolant back into over flow bottle had pressure test which was all good new cap and new thermostat but still with problem

Just two possibilities. First would be the air wasn't purged completely out of the system. Second is a blown head gasket. And yes, I have seen a good pressure test on the coolant side (15 to 18 PSI). But the pistons throw out 100+ PSI. Check or have checked, the coolant system for exhaust gas. There is a test for it.

Oct 21, 2013 | 1993 Toyota Land Cruiser

1 Answer

2003 pt cruiser the coolant reservoir makes a gurgling sound and boils

Have a coolant pressure test done. Have a compression test done to check for head gasket/cracked head. Check that cooling fans are working. Have a flow test done on the radiator. Have the radiator cap tested. You have an over heating engine.

Aug 24, 2013 | Ford Cars & Trucks

1 Answer

HDJ81 1HD-T 80series land cruiser

The only way pressure can build up in the radiator is for combustion gasses to leak into the cooling system. This is usualy from a blown head gasket, a cracked cylinder head or a porous block. These things should have been checked for when the engine was rebuilt. Assuming it was done by an engine reconditioning service.

Feb 28, 2013 | 1993 Toyota Land Cruiser

1 Answer

Oil is mixing with water but does not have a head gasket problem any ideas please

I don't mean to sound sceptical, but how have you concluded there is not any head gasket problem? Do you mean a compression test is good? Because that will not show up any leak between the water jacket and the oil passages, via the head gasket joint. Only a pinhole leak is needed because water is, well, watery.
Has a radiator leak down test been done? This will show up water jacket leaks (there may be more than one), and give you some idea of the size.

I don't know your engine well, but I cannot think of another ready way for water to get in the oil or v-v, except a cracked block, which is rare. I have read of a leaky intake manifold gasket causing it, but I can't picture that one myself.

Feb 11, 2012 | 1993 Toyota Land Cruiser

1 Answer

87 toyota truck head gasket leak. new thermostat,and radiator. Rapid temp fluctuation red to norm?

You need to have a head gasket test done, this is done by using a block tester, this is a funnel type tube, fill a little speical fluid into the tube and then place over the radiator fill, you will need to drain coolant down a little so coolant doesnt mix with fluid, with engine running you hold over the hole and if it changes color then the head or its gasket is bad if it doesnt change then i would take a look at the fan clutch to make sure its working, when the temp goes up it should lock fan up to cool more, another thing is the waterpump impeller sometimes rots away some or breaks and then cooling is bad due to lack of coolant flow.but this is only if the block test fails. good day.

Mar 29, 2011 | Toyota Pickup Cars & Trucks

2 Answers

My 1990 toyota pickup 4x4 is over heating and i've changed the thermostat and checked the water pump. i'm not sure what else to check

most likely you have either a plugged radiator or blown head way to check if its a head heating than you know its a head gasket.But when u reove the thermostat open the radiator cap before you run.after you remove the cap astart the vehicle and check for good circulation in radiator.Hope this helps.

Apr 16, 2010 | 1990 Toyota Pickup

2 Answers

Just had a new cylinder head fitted to my 1997 toyota land cruiser , now its over heating what could be the problem .

It sounds like the head gasket is leaking and needs to be replaced. Keep in mind that the antifreeze is corrosive to the bearing to the engine so try to replace the gasket and engine oil soon as possible. Keep an eye on the oil level and condition, check to make sure that there is no antifreeze mixing with the engine oil. If your lucky, it could just be a bad thermostat and less work to replace the thermostat. Good luck

Nov 30, 2009 | 1995 Toyota Land Cruiser

2 Answers

2002 pt cruiser overheating was told i need a new raditor and thermostat for 1 grand sounds fishy

Flush rad & change coolant & thermostat. Check operation of rad fan, & make sure it is coming on when engine reaches normal operating temperature. Be sure to bleed air out good when refilling rad/cooling system. Start engine & turn heater on when refilling & let rad fan come on & off at least 2 or 3 times before putting cap back on rad, and refill rad as needed as you do this. then fill return bottle to proper level & see what happens.

Jun 27, 2009 | 2002 Chrysler PT Cruiser

1 Answer

1989 Toyota Land Cruiser overheating- REPLACED ENTIRE COOLING SYS

Do a cylinder leak down test. Hook up a airline to each spark plug hole. Bring each cyclinder to tdc and listen for air leak. Possibly in the radiator. You can also reverse the process by doing a radiator leak down test. If you hear bubbling in the radiator bad head gasket. Remove and replace head gasket.

Jan 09, 2009 | Honda Accord Cars & Trucks

Not finding what you are looking for?
1993 Toyota Land Cruiser Logo

666 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts


Level 3 Expert

81294 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8841 Answers

Are you a Toyota Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides