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Changing a thermostat in a John Deere 445 k series

Does not use any coolant. Goes into the red for a short while and back again.

Posted by Anonymous on

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Posted on Jan 02, 2017

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SOURCE: coolant issue with 1997 blazer

check to see if you have a leak in your heater core,and if the heater core is not leaking you might have a leak on the intake gasket or the head gasket

Posted on Jan 03, 2009

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SOURCE: 2000 3.8 Impala keeps overheating even after

Sounds like there could be an air pocket in your cooling system. If the job was done by a mechanic take it back. If a "friend" helped you, tell him to rebleed the system. Also seems like your water pump might be bad. If it was overheating before changing the thermostat and is still doing the problem only worse then I would assume the pump needs to be changed. If the pump is bad, there is no doubt that air is in the system still and causing the overheating to occur even faster.

Posted on Sep 28, 2009

Testimonial: "Thanks will check....how do u check water pump or fan relay"

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SOURCE: Excess pressure in coolant-Gage pegs Hot-then normal

sounds like a blown heat gasket, very common on a 4.6

Posted on Oct 10, 2009

  • 70 Answers

SOURCE: Excess pressure in coolant system-gage will peg Hot.

sounds like you have air bubbles in the system

Posted on Oct 10, 2009

  • 95 Answers

SOURCE: 2001 VW Beetle: My coolant

possible water pump impeller broken

Posted on Jan 05, 2011

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2 Answers

How do I replace a thermostat in a 1999 Ford Explorer?


James from Auto.Repairs
Please I ask if this helps anyone to rate my answers as for thats how I can advance to the next level.
Thank you much :0)
I'am feeling that your issue is not really with the thermostat my friend. what your describing seems to be the coolant temperature sensor.
And or a loose connection to the sensor 48121ee4-0616-4184-b990-49f490eea9c0.jpg fa29c095-9038-43aa-aeee-f9ad43acb595.jpg

Try turning the key on engine off and look at the coolant gauge
now go out and under the hood it should be in the thermostat housing where the thermostat goes to you should see the #1 picture with 2 wires going to it if you unplug it and go back into the car and look at the gauge it should be in the red hot zone.
if not then your gauge has a short to it lightly with your palm of your hand rap on top of the dash nearest to the gauge and see if it tries to go up if it does then most likely it is a short in the cluster or harness.
and if when cts is unpluged and it goes all the way in the hot zone and when you plug it back in and it goes back into the cold and stay there should be that it is fine just loose connector or needs cleaned if when you wiggle wires and the needle goes up and down then you need to replace the plug and I would still suggest replacing the coolant temp sensor as for it may have been shorted do to the loose connection.

Sep 08, 2014 | Cars & Trucks

1 Answer

Overheating car


There may be an issue with your oil pressure sensor.
You also probably have a faulty water pump that is functioning under revs but not at idle, what happens if you rev it mildly at idle

Apr 11, 2013 | 2003 BMW 5 Series

1 Answer

While running the air conditioner the Thermostat goes hot, when I turn the air conditioner off it goes back down. The low coolant light came on but the coolant is full. What else could it be?


To start with, you are talking about the temp gauge. The thermostat is in the engine.
The coolant system could be low or have air pockets and still look full.
First thing I would check is the cooling fan, then the coolant level.

Jun 30, 2012 | 1999 Ford Taurus

1 Answer

2000 vw beetle 2.0 L, low level coolant light...engine mil code 1256


not the pump but air in the system or a broken wire to the coolant level sensor
that sensor at the top of the radiator tank has to be completely immersed in coolant or the circuit is broken and the light comes on
same effect id the wire to that sensor is broken in the insulation

Jun 16, 2017 | Cars & Trucks

1 Answer

Its me AGAIN. Same car same problem. I changed my water pump, flushed and back flushed my radiator, and changed my thermostat. The engine ran nice and cool for 2 days and now we are back in the red with...


A bad cap will definately cause your problem. Put a new radiator cap on and your problem should be gone. The cap controls the pressure in your system (usually about 15 lbs) and for every pound of the pressure the boiling point of your coolant goes up by 4-6 degrees.

Jul 01, 2010 | 1994 Chrysler Concorde

1 Answer

The temprature indicator seems unstable : goes to red section goes down a bit and go up again then stays in red section but when I check coolant temperature in radiator it's only warm (not that much) hot?


Check the upper radiator hose by touching it to see if it feels hot after you have run the car for awhile. If it feels hot then the thermostat is ok. If not then the thermostar is at fault and will need to be changed. If you need to change the thermostat on car be sure to disconnect the negetive wire from battery before you start. Hope this will help you.

May 15, 2010 | Cars & Trucks

1 Answer

Excess pressure in coolant-Gage pegs Hot-then normal


sounds like a blown heat gasket, very common on a 4.6

Oct 09, 2009 | 1999 Ford F150 Regular Cab

1 Answer

Excess pressure in coolant system-gage will peg Hot.


sounds like you have air bubbles in the system

Oct 09, 2009 | 1999 Ford F150 Regular Cab

1 Answer

2000 3.8 Impala keeps overheating even after changing thermostat. Did not overheat after short trips, after changing it, but started back after driving over 20 miles. Temp gauge goes to red and coolant...


Sounds like there could be an air pocket in your cooling system. If the job was done by a mechanic take it back. If a "friend" helped you, tell him to rebleed the system. Also seems like your water pump might be bad. If it was overheating before changing the thermostat and is still doing the problem only worse then I would assume the pump needs to be changed. If the pump is bad, there is no doubt that air is in the system still and causing the overheating to occur even faster.

Sep 28, 2009 | 2001 Chevrolet Impala

1 Answer

Heater temperature fluctuates which effects the temp gauge


Sounds like SOUNDS like thermostat and a pressurised coolant flush would be a good place to start that thermostat might be opening and closing due to the above perfect place to start.John

Jan 01, 2009 | 1999 Land Rover Range Rover

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