overheating i need help!
#1
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overheating i need help!
hi everyone,
my 86 pickup has been running really hot and overheated twice, i usually catch it before it overheats and put more coolant in. whats been happening is it will get really hot and coolant will shoot back into the reservoir and fill it up then it shoots out the overflow hose all over the engine bay. what could be causing this? ive been told i need a new water pump but i dont wanna go buy one if i dont need it. any ideas would help a lot. thanks
oh and btw, i already replaced the radiator cap and stat. hoping it would help but it didnt
my 86 pickup has been running really hot and overheated twice, i usually catch it before it overheats and put more coolant in. whats been happening is it will get really hot and coolant will shoot back into the reservoir and fill it up then it shoots out the overflow hose all over the engine bay. what could be causing this? ive been told i need a new water pump but i dont wanna go buy one if i dont need it. any ideas would help a lot. thanks
oh and btw, i already replaced the radiator cap and stat. hoping it would help but it didnt
#2
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Take the fan belt off and check the WP bearing for play and/or roughness.
Did you notice whether or not you had coolant dripping out of the seep holes in the WP housing?
Did you notice whether or not you had coolant dripping out of the seep holes in the WP housing?
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More times than you think, even if the t-stat is new it could be bad. Take it out of the truck and run the truck around. See what your temps are like. Also, while you have it out, test it in a pot of water on the stove to see if it opens at the specified temperature on the t-stat. Did you buy an OEM t-stat or an aftermarket one?
#10
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its a Stant 195, i belive its aftermarket ill go pull it and drive around the neighborhood, i like the idea of putting it in a pot of hot water ill try that too thanks guys
#11
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Yup, I use a pot of water and a candy thermometer that the wife uses for baking Works great. If it's a Stant 195, then it's more than likely aftemarket, get a Toyota OEM unit, and you may as well go for the dual stage t-stat...it's a bit more spendy, but worth it (around $30-$35 depending on where you get it) I got mine from Olathe Toyota ( www.toyotapartscenter.net ). The Toyota part number for the dual stage is 90916-03070
#12
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Also, there are two seep (or "weep", as they're also called) holes on the water pump where the housing tapers towards the flange and fan shaft. If those leak, that means the bearing seal is bad and the pump is on it's way out. But, if you don't notice any coolant coming from the bearing play will also tell you.
#13
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No...I meant check the water pump bearings for play...not the belt slipping. To check that, you have to pull the belt off and grab hold of the fan clutch and wiggle. Turn the fan to see if the feeling of the water pump bearings is rough and sticky or smooth and turning fairly easy.
Also, there are two seep (or "weep", as they're also called) holes on the water pump where the housing tapers towards the flange and fan shaft. If those leak, that means the bearing seal is bad and the pump is on it's way out. But, if you don't notice any coolant coming from the bearing play will also tell you.
Also, there are two seep (or "weep", as they're also called) holes on the water pump where the housing tapers towards the flange and fan shaft. If those leak, that means the bearing seal is bad and the pump is on it's way out. But, if you don't notice any coolant coming from the bearing play will also tell you.
Last edited by algranger; 03-25-2008 at 05:17 PM.
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Do a compression test...also, you can get down near the exhaust to see if it smells "sweet". Or, put a towel over it while the exhaust is going, and then hold it up to your nose and see if there's a sweet odor. If that's the case, it "could" be your HG. When is the last time you flushed and re-filled your coolant? Sometimes dirt works its way in there...you could also have a clogged/dirty radiator...particles in your coolant can come from the fins when they're rusted/dirty.
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