Performance & Maintenance Engine, forced induction, intakes, exhausts, torque converters, transmissions, etc.

SC300 Overheat/Thermostat/Waterpump

Thread Tools
 
Search this Thread
 
Old 08-02-08, 01:28 PM
  #1  
TyrantTru
Driver School Candidate
Thread Starter
 
TyrantTru's Avatar
 
Join Date: Jul 2008
Location: Colorado
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default SC300 Overheat/Thermostat/Waterpump

So just recently mySC300 blew the hose that is on the back of the motor, coming off of the heater core. Seems I have no circulation and it burns up what is in the motor and overheats. THe hose blew as a result I believe. I am unable to find a service manual and need to figure out where the thermostat is located for replacement, anyone able to help? -- I'm assuming its right off of the pump?;(

Last edited by TyrantTru; 08-02-08 at 01:54 PM.
Old 08-02-08, 05:32 PM
  #2  
SH_JZZ30
Lexus Champion
iTrader: (1)
 
SH_JZZ30's Avatar
 
Join Date: Jul 2007
Location: Florida
Posts: 2,407
Likes: 0
Received 2 Likes on 2 Posts
Default

It's at the end of the lower radiator hose. Unbolt the housing and it's there.

Last edited by SH_JZZ30; 08-02-08 at 05:40 PM.
Old 08-02-08, 06:36 PM
  #3  
TyrantTru
Driver School Candidate
Thread Starter
 
TyrantTru's Avatar
 
Join Date: Jul 2008
Location: Colorado
Posts: 4
Likes: 0
Received 0 Likes on 0 Posts
Default Ah

Alright so I replaced the thermostat and fixed the hosing coming out of the heater core -- My heater isn't hot, and my engine will start getting hot, between the two bars below the bars that have the red in it.. then it'll drop to acceptable levels for a bit then start heating up too hot again sounds as if the coolant may be boiling inside of the radiator, could this possibly be the pump or perhaps a weird clog?
Old 08-02-08, 07:03 PM
  #4  
deruvian
Driver
 
deruvian's Avatar
 
Join Date: May 2005
Location: CA
Posts: 185
Likes: 0
Received 0 Likes on 0 Posts
Default

If your car has more than 120k miles on it you should replace the water pump no matter what. They start to go in these cars around then, and it is a preventative maintenance sort of thing. Do it, or be sorry you didn't.

My point is that even if there is an eensy-weensy bit of hope in your mind that you won't have to replace the water pump, just forget about it and replace it anyway.

Also, it makes sense to start at the water pump if the thermostat wasn't the problem. As long and your crank fan is turning, you haven't taken the fan shroud off, and the radiator looks to be in decent shape it seems that the water pump is the next obvious choice.
Old 08-02-08, 09:36 PM
  #5  
desol11
Rookie
 
desol11's Avatar
 
Join Date: Feb 2008
Location: tx
Posts: 54
Likes: 0
Received 0 Likes on 0 Posts
Default

check your fan if it if you turn it and it spins freely then you need another fan clutch i would try this first
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
princess87
IS - 2nd Gen (2006-2013)
9
07-31-16 04:46 PM
canucklehe
ES - 1st to 4th Gen (1990-2006)
11
11-22-13 07:46 PM
eknine9
Performance & Maintenance
9
08-26-12 03:01 PM
lemmiewink
Performance & Maintenance
33
10-29-08 09:30 PM
esandes
Maintenance
14
06-26-06 11:12 PM



Quick Reply: SC300 Overheat/Thermostat/Waterpump



All times are GMT -7. The time now is 07:06 AM.