running no thermostat how hot?
07-17-2007, 09:19 AM
#11
TECH Regular
Join Date: Nov 2006
Location: League City, Texas
Posts: 430
Likes: 0
Received 0 Likes
on
0 Posts
If the system is not holding pressure, it will not cool properly. You might try a new coolant tank cap and see if that helps. It's also hard to get air out of the system if the pressure is not right.
Another simple thing to try would be to replace the temperature sending unit. It's possible your sending unit is bad and you aren't really overheating. Because of the way you describe the overheating though, I would say that this is a longshot.
As long as they are not leaking, water pumps don't usually cause overheating. Water pumps usually fail because the bearing and / or the seal wear out and the pump starts leaking. A leaky pump will still pump until the coolant runs out. The only way to loose flow is to loose the vanes on the impeller and this only happens on severely corroded systems, like a boat that uses salt water for cooling.
I think that your most likely problem is a partially plugged radiator. Some people have had real bad results with Dexcool antifreeze. It's supposed to be good for 100,000 miles but it doesn't last that long in hot climates. If the simple fixes above don't help, you ought to pull the radiator next and get it checked at a radiator shop.
Another simple thing to try would be to replace the temperature sending unit. It's possible your sending unit is bad and you aren't really overheating. Because of the way you describe the overheating though, I would say that this is a longshot.
As long as they are not leaking, water pumps don't usually cause overheating. Water pumps usually fail because the bearing and / or the seal wear out and the pump starts leaking. A leaky pump will still pump until the coolant runs out. The only way to loose flow is to loose the vanes on the impeller and this only happens on severely corroded systems, like a boat that uses salt water for cooling.
I think that your most likely problem is a partially plugged radiator. Some people have had real bad results with Dexcool antifreeze. It's supposed to be good for 100,000 miles but it doesn't last that long in hot climates. If the simple fixes above don't help, you ought to pull the radiator next and get it checked at a radiator shop.
07-20-2007, 06:13 AM
#12
TECH Fanatic
Thread Starter
iTrader: (11)
Join Date: Aug 2005
Location: florida
Posts: 1,416
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Yogi Bear
If the system is not holding pressure, it will not cool properly. You might try a new coolant tank cap and see if that helps. It's also hard to get air out of the system if the pressure is not right.
Another simple thing to try would be to replace the temperature sending unit. It's possible your sending unit is bad and you aren't really overheating. Because of the way you describe the overheating though, I would say that this is a longshot.
As long as they are not leaking, water pumps don't usually cause overheating. Water pumps usually fail because the bearing and / or the seal wear out and the pump starts leaking. A leaky pump will still pump until the coolant runs out. The only way to loose flow is to loose the vanes on the impeller and this only happens on severely corroded systems, like a boat that uses salt water for cooling.
I think that your most likely problem is a partially plugged radiator. Some people have had real bad results with Dexcool antifreeze. It's supposed to be good for 100,000 miles but it doesn't last that long in hot climates. If the simple fixes above don't help, you ought to pull the radiator next and get it checked at a radiator shop.
Another simple thing to try would be to replace the temperature sending unit. It's possible your sending unit is bad and you aren't really overheating. Because of the way you describe the overheating though, I would say that this is a longshot.
As long as they are not leaking, water pumps don't usually cause overheating. Water pumps usually fail because the bearing and / or the seal wear out and the pump starts leaking. A leaky pump will still pump until the coolant runs out. The only way to loose flow is to loose the vanes on the impeller and this only happens on severely corroded systems, like a boat that uses salt water for cooling.
I think that your most likely problem is a partially plugged radiator. Some people have had real bad results with Dexcool antifreeze. It's supposed to be good for 100,000 miles but it doesn't last that long in hot climates. If the simple fixes above don't help, you ought to pull the radiator next and get it checked at a radiator shop.
Thanks, it seems it was air in the system. Temp is holding good now.
Thread
Thread Starter
Forum
Replies
Last Post
