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How to replace a thermostat

Tiny
JBUG21
  • MEMBER
  • 1991 TOYOTA PICKUP
  • 6 CYL
  • 4WD
  • MANUAL
  • 256,000 MILES
Hey guys I just wanted to know exactly how to change the thermostat on my pickup?
Wednesday, September 2nd, 2009 AT 12:05 PM

11 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Hello,

Here is a guide to help walk you through the steps and diagrams below to show you how on your car. The bottom hose attaches to the thermostat housing

https://www.2carpros.com/articles/replace-thermostat

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.
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Wednesday, September 2nd, 2009 AT 2:34 PM
Tiny
JASONLEEBRIGGS
  • MEMBER
  • 1 POST
  • 1991 TOYOTA PICKUP
  • 4 CYL
  • 4WD
  • MANUAL
  • 218,000 MILES
The thermostat froze closed and the radiator overheated and cracked. I replaced the radiator and the thermostat.
Overheating is still a problem. I removed thermostat and truck stays cool. I opened the radiator and water is moving (meaning water pump is working?). I replaced thermostat again with a new one and still overheats.
Could new radiator and thermostat be rated at different temps? Do I keep getting bad thermostats?
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Saturday, January 5th, 2019 AT 12:25 PM (Merged)
Tiny
MISSY2SHOES
  • MEMBER
  • 2 POSTS
Try flushing your system. You may have a blockage in the heater core. Dont make the mistake of putting your thermostat in backwards, And yes can be done.
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Saturday, January 5th, 2019 AT 12:25 PM (Merged)
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
  • 1991 TOYOTA PICKUP
Where is the thermostat located on a 91 4
wheel drive Toyota pickup
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Saturday, January 5th, 2019 AT 12:27 PM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
If you follow the upper radiator hose to engine, you would come to the thermostat housing, inside which is the thermostat.
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Saturday, January 5th, 2019 AT 12:27 PM (Merged)
Tiny
FLOPSTER54
  • MEMBER
  • 1 POST
  • 1992 TOYOTA PICKUP
Engine Cooling problem
1992 Toyota Pickup 6 cyl Four Wheel Drive Automatic

Hello there, I can't find thermostat. Do you know where it is?
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Saturday, January 5th, 2019 AT 12:27 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The thermostat is located in the thermostat housing at the bottom radiator hose where it connects to the engine block.


https://www.2carpros.com/forum/automotive_pictures/12900_stat_5.gif



DRAIN ENGINE COOLANT
DISCONNECT RADIATOR OUTLET HOSE
REMOVE THERMOSTAT
(a) Remove the 3 nuts. water inlet and thermostat with gasket from the water pump.
(b) Remove the gasket from the thermostat.
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Saturday, January 5th, 2019 AT 12:27 PM (Merged)
Tiny
NETERONE
  • MEMBER
  • 1 POST
I need to know the location of a thermostat on a 1992 pickup 2wd 4 cylinders thanks.
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Saturday, January 5th, 2019 AT 12:27 PM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
The thermostat for these engine is in the bottom radiator hose as well. Under the thermostat housing at the block.
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Saturday, January 5th, 2019 AT 12:27 PM (Merged)
Tiny
KEVINJOE
  • MEMBER
  • 1 POST
  • 1993 TOYOTA PICKUP
Engine Cooling problem
1993 Toyota Pickup 6 cyl Four Wheel Drive Manual

need to know where thr thermastat is located
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Saturday, January 5th, 2019 AT 12:27 PM (Merged)
Tiny
BLUELIGHTNIN6
  • MECHANIC
  • 16,542 POSTS
The thermostat is in the bottom radiator hose where it connects to the motor.
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Saturday, January 5th, 2019 AT 12:27 PM (Merged)

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