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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

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Old 01-10-2009, 07:03 PM   #1
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thermostat location.

i bought me a new thermostat the other day and i cant for nothin find where the stupid thing is on my truck. i looked onthe internet to see if i could find a pic and this is all i found. so i go to try and find it on my truck and i cant. do you have to get it out form the bottom or what. or is theis pic even right.
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Old 01-10-2009, 07:15 PM   #2
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If yours is a 3.0, follow the large rubber hose coming from the radiator (driver side) and going to the engine block. You have to drain the coolant before removing the hose and cover plate (3 bolts, I believe).
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Old 01-10-2009, 07:16 PM   #3
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Follow the top radiator hose to where it bolts to the block. Drain some off the coolant out of the rad, first. Undo the rad hose from the housing, undo the 3 bolts holding the thermostat housing to the block, take off the housing, and VOILA! There's your thermostat.

Pic of 22re the thermostat housing is in the black rectangle
Click the image to open in full size.

Pic of the thermostat on 3vze, in the black regtangle
Click the image to open in full size.
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Wheel IFS. Wheel SAS. Wheel your big wheel. Just wheel.
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Last edited by a4runnerfreak; 01-10-2009 at 07:26 PM.
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Old 01-10-2009, 07:19 PM   #4
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Forgot to provide this link to the FSM...

http://personal.utulsa.edu/~nathan-b...10thermost.pdf
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Old 01-10-2009, 07:22 PM   #5
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sorry guys its a 22re i shuoldve mentioined that but woudlit still be the same?
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Old 01-10-2009, 07:26 PM   #6
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In that case.....a4runnerfreak is more accurate. The t-stat on the 22re is nestled in the intake plenum area. Drain some coolant, follow the top hose (passenger side of radiotor) back to the head/intake and unbolt to expose the t-stat.
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Old 01-10-2009, 07:31 PM   #7
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Follow the big rubber hose from the top pass. side of the rad to the engine. The T-stat is located where the metal pipe the hose goes into makes a 90* turn downwards. That pipe should unbolt, and the t stat will be looking right at you when you remove the pipe.
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Yeah, I do think it's sort of funny. Can't you see a roomful of Toyota engineers looking at a relay rod, scratching their heads and saying 'Hmmm, this part wore out after 200,000 miles and 16 years, this is just unacceptable.'
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Old 01-10-2009, 07:32 PM   #8
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Just check out 1st pic in my post...might be kinda surrounded by vac lines. I "borrowed" that pic......lol
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Wheel IFS. Wheel SAS. Wheel your big wheel. Just wheel.
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Now if he has broken the law, then he should spanked on his flabby pink bottom in public by oompa loompas.
Quote:
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tony! where have you been all my life?


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1991 Toyota 4Runner SR5 4x4, 3.0 V6, Auto <---R.I.P

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Old 01-10-2009, 07:38 PM   #9
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The T stat is located sitting on that big, gaping hole between #1 and #2 fuel injectors.

Click the image to open in full size.
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1990 Toyota 4Runner 22RE 5spd SOLD

1987 Toyota P/U, 2wd auto, 1 tonne SOLD

Quote:
Originally Posted by DaveInDenver View Post
Yeah, I do think it's sort of funny. Can't you see a roomful of Toyota engineers looking at a relay rod, scratching their heads and saying 'Hmmm, this part wore out after 200,000 miles and 16 years, this is just unacceptable.'
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Old 01-11-2009, 06:04 AM   #10
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ok guys i appreciate yall alot. i knkow what im doin now
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Old 01-11-2009, 06:10 AM   #11
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Glad you found it. On the 3vze it is located where the lower radiator hose clamps to the engine block.
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Old 06-22-2013, 01:12 PM   #12
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Unhappy Can't Reach!

Ok guys, I have a 91 4runner, 3.0, with the thermostat on the lower driver side (as mentioned above) but I can't hardly reach the bolts to get the housing off! Any tips/tricks to make my life a little easier on this? Any specific tools that work well?
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Old 06-23-2013, 09:25 AM   #13
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On 3.slow, Remove Radiator and shroud, Disconnect fanclutch from spindle to remove fan, Remove 3 nuts that hold thermostat housing on.
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Old 03-22-2014, 06:42 AM   #14
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I gotta question...

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Old 03-22-2014, 06:45 AM   #15
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Reviving a dead thread!!!
So my buddy has a 3.0 on his 1991(?) pickup. I went over there to help diagnose an overheating problem. He just had a new thermostat installed, and I just got done flushing the radiator, taking off hoses to check for clogs, etc. The coolant was fresh and green, as the oil was black and oily. No white smoke out of the tailpipe. So I ruled out a blown headgasket. Even after the flush and insepection yesterday, its still overheating. I was going to take out the thermostat and reassemble the housing to see if maybe he got a bad thermostat? However I did not have a deep enough socket with me to get the last bolt. So im going over today to help finish the job. However if it turns out NOT to be a faulty thermostat, what else can I look for? I heard someone saying to take the radiator cap off, start it and check to see if the coolant is circulating (water pump still functioning). Ill check that today. As for burping the system, you just let it run with the cap off and front end elevated, right? The radiator has no cool spots, so im assuming there is no clog. However, when he first started noticing it overheat, the tube on the overflow resevoir would leak a good ammount of coolant right around operating temps. Him knowing nothing about cars, proceeded to by radiator stop leak for the following 3-4 weeks. When he realized his leak hadnt stopped (not knowing where it was even coming from) he parked the truck and left it.
What in the world is causing this thing to continuously overheat?!?
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Old 03-22-2014, 08:51 AM   #16
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Hi welcome. Start a new thread please. You'll get better results.
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Old 03-22-2014, 08:51 AM
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1990, 1991, 2000, 30, 30l, 3vze, 4runner, change, check, location, opening, replace, thermostat, toyota, v6

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