Running hot
#1
#2
#3
replacing t-stat is the right move. hate to say this but make sure its not in upside down. sensor down.
i like to test t-stat's in a pot of water on the stove with a cooking thermometer. it should crack open at the beginning of all the little bubbles, well before it boils at 212. i've only found 1 bad new one over the years, but i still always do it, just because i like to know and i'm that kind of **** person.
i like to test t-stat's in a pot of water on the stove with a cooking thermometer. it should crack open at the beginning of all the little bubbles, well before it boils at 212. i've only found 1 bad new one over the years, but i still always do it, just because i like to know and i'm that kind of **** person.
#4
I dont have time to mess with the truck today but when I did the plenum I flushed the coolant but did not use descaler. I was thinking maybe something got clogged up or the tstat is not opening. The hose connecting the tstat and the upper rad is very very hot and the hose at the bottom is barely warm. I'm 98% sure I put the tstat in correctly, but you never know! I was working on it at 7 am in the morning right when I woke up.
I'm thinking of getting a 180* stat. Should I?
I'm thinking of getting a 180* stat. Should I?
#5
most people are able to run a 180 tstat without a problem. occasionally someone gets stuck with a cel code ? engine too cold for too long. i think they just have a combination of slightly off tstat's and coolant temp sensors. your mpg might drop a smidgen but its an insignificant amount. i think lower temps are better than higher temps, and when you climb that big hill while towing the boat it reduces the temp rise slightly.
#7
Trending Topics
#8
#9
Well here is the deal... I put the old thermostat in and it still wants to run at 240-245.
Do I have a clog in the system? When I put the new tstat in there was a bunch of stuff on it. Like rust colored all over the tstat. It seems like the coolant isnt moving beause the lower rad hose is cold. I'm lost?
Do I have a clog in the system? When I put the new tstat in there was a bunch of stuff on it. Like rust colored all over the tstat. It seems like the coolant isnt moving beause the lower rad hose is cold. I'm lost?
#10
did you drain the block yet using the block drains behind the engine mounts ? that might release some of the heavier deposits. edit - caution, they can be difficult to remove. i had to use vise grips to get ahold of them and prevent roundoff.
the rust color is normal. the inside of the block is all cast iron, so it'll be rusty as hell.
try this - remove the t-stat completely. what happens? it should run very cool, like around 150'ish. if not, disconnect top rad hose and see if you have strong flow coming out of the engine. careful - things are hot.
the rust color is normal. the inside of the block is all cast iron, so it'll be rusty as hell.
try this - remove the t-stat completely. what happens? it should run very cool, like around 150'ish. if not, disconnect top rad hose and see if you have strong flow coming out of the engine. careful - things are hot.
Last edited by dhvaughan; 08-29-2010 at 01:58 PM.