Temp problem
Mar 18, 2010 | 12:14 PM
#1
Thread Starter
Registered User
Joined: Mar 2010
Posts: 2
Likes: 0
From: Craig co Virginia
Temp problem
Hey guys Im new to this forum..I had a question for ya I have a 91 22re that the temp guage moves from 190 to 230 all the time worse when the heats on..I have mecanical guages on it,new water pump,new t stat,new anti and I flushed the heat core out so can any one help..Ive heard about a dual stage T stat but never used one I have workd on these things forever but never seen this problem...Thanks
Mar 19, 2010 | 06:09 AM
#4
Contributing Member
Joined: Nov 2002
Posts: 10,666
Likes: 5
From: Oklahoma State
22re gets hotter with the heat on? Yes, that has been a common problem for many years and its been covered very well here:
http://www.4crawler.com/4x4/CheapTri...tml#Thermostat
I quote Roger from the link:
http://www.4crawler.com/4x4/CheapTri...tml#Thermostat
I quote Roger from the link:
After everybody looked at me like I was crazy for saying that it ran hotter with the heat on, I went to the dealership and bought t-stat part # 90916-03070. This did the trick. What happens on the 22R and 22RE engine, when the coolant goes through the heater core it gets cooled off enough that when it gets dumped back in on top of the t-stat it shuts it. Therefore the temperature in the engine continues to go up. The t-stat that I have mentioned has two valves in it, one at the regular temp. and one smaller on at a cooler temp. If the cool water shuts the big one, the smaller one stays open. The overshooting/spiking temperature gauge may aslo appear independent of heater operation.
Last edited by mt_goat; Mar 19, 2010 at 06:11 AM.
Mar 19, 2010 | 06:14 AM
#5
Contributing Member
Joined: Nov 2002
Posts: 10,666
Likes: 5
From: Oklahoma State
It may have been doing that all along and you didn't notice because the factory temp gauges can swing from 180-235 and never move the gauge from the middle of normal. Did you just recently install the aftermarket coolant temp gauge by any chance?
Last edited by mt_goat; Mar 19, 2010 at 06:16 AM.
Feb 7, 2011 | 04:34 PM
#6
Registered User
Joined: Feb 2010
Posts: 39
Likes: 0
From: Indiana
not to revive a long dead thread but i am at my witts end with the coolant system on my 88 22re!!! 1. begining of winter: temp would run about 1/3 factory guage then boom spike up to the top white line for about then minutes then back down. 2.it got worse, temp wouldnt fall back down from white line, thermostate changed after that. 3. same thing happened, then changed radiator then hoses, all new half prestone half distilled water. 4. Now the temp rides in the middle of the guage and the heat is hot until it hits this point. now mid winter heat failing is NOT!! cool. any help?? im desperate
Thread
Thread Starter
Forum
Replies
Last Post
the1998sr5
95.5-2004 Tacomas & 96-2002 4Runners
15
Jul 14, 2020 08:35 PM
Poncho0206
95.5-2004 Tacomas & 96-2002 4Runners
3
Jul 10, 2015 06:21 PM
Avenged
95.5-2004 Tacomas & 96-2002 4Runners
4
Jul 9, 2015 07:55 AM
