Coolant System Help Needed
#1
Coolant System Help Needed
I noticed my water temp gauge spiking about 5 minutes after initial startup. It goes up about 3/4 of the way, never gets redlined, but gets hotter than normal, and then goes back down to normal, which is a little less than halfway. It did it this morning and on the way home from work, both the same each time. Once it spikes, runs fine after that with no issues.
I recently pulled the heater core (all the HVAC) and the hoses and rerouted the return line to the feed line right before where it used to go into the heater core. I'll clean all that up later.
Here are some possible causes/solutions:
air pocket in coolant system from removing hoses/heater core and low on coolatn - I checked it and it is full so it will work itself out
t-stat sticking - r/r
t-stat sticking because of debris in system - flush system
Any diagnosis and advice is appreciated.
I recently pulled the heater core (all the HVAC) and the hoses and rerouted the return line to the feed line right before where it used to go into the heater core. I'll clean all that up later.
Here are some possible causes/solutions:
air pocket in coolant system from removing hoses/heater core and low on coolatn - I checked it and it is full so it will work itself out
t-stat sticking - r/r
t-stat sticking because of debris in system - flush system
Any diagnosis and advice is appreciated.
#3
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That to me sounds like a t-stat. I say that because it spikes then corrects itself. Behaves like the t-stat is either sticking closed or somehow having trouble opening. Once it opens, the system cools properly. Just my thoughts.
#4
#5
http://www.4crawler.com/4x4/CheapTri...tml#Thermostat
This sounds exactly what mine is doing...but it only started doing it AFTER I removed the heater core and looped the system. Hmmmm...
This sounds exactly what mine is doing...but it only started doing it AFTER I removed the heater core and looped the system. Hmmmm...
#6
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I'm not familiar with the 22RE cooling routing, but could the looping of the system be causing the coolant to flow fast through the heater core loop and put some sort of pressure on the t-stat which holds it closed. Finally the system builds up pressure though heat and blows the t-stat open? Just taking a wild guess here.
#7
I'm going to cap off the feed/return lines by blinding off one side and taking the other side off, cutting it past the sensor nipple and welding it up. Then no more loop. If that doesn't fix the t-stat issue, then I'll put in the 2 valve t-stat and I'll have no more loop anyway...as I don't need it w/ no heater. Just something else to leak.
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#8
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Originally Posted by waskillywabbit
http://www.4crawler.com/4x4/CheapTri...tml#Thermostat
This sounds exactly what mine is doing...but it only started doing it AFTER I removed the heater core and looped the system. Hmmmm...
This sounds exactly what mine is doing...but it only started doing it AFTER I removed the heater core and looped the system. Hmmmm...
#11
yeah they jacked up the price though... its now like $38
it works awesoem though... enver had any issues since i put mine in...
the stock tstat i had before i put in the 2 stage was only 3 months old before it failed!
it works awesoem though... enver had any issues since i put mine in...
the stock tstat i had before i put in the 2 stage was only 3 months old before it failed!
#12
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Yep, dealer parts counter is where I got mine:
http://www.4crawler.com/4x4/CheapTri...tml#Thermostat
I've had mine in 6-7 years now, still going strong. I did pick up a spare a few years back, but have not needed to install it.
http://www.4crawler.com/4x4/CheapTri...tml#Thermostat
I've had mine in 6-7 years now, still going strong. I did pick up a spare a few years back, but have not needed to install it.
#13
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Mine is doing the excact same thing right now. the only thing i have touched on the cooling system is the throttle body part, I took it off to clean it and lost a little coolant.
dual thermo is on the list of things to do now!
wade
dual thermo is on the list of things to do now!
wade
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