Over heating

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Jan 3, 2006 | 10:23 AM

daveochoa

Thread Starter

Driver School Candidate

Joined: Jan 2006

Posts: 4

Likes: 0

From: Texas

Over heating

My 93 SC 400 seems to be over heating, I changed out the coolant, changed out the thermostat, bleed the system, worked fine, but after sitting a week, I started it up, noted that no heat from heating system, even on high, then after about 4 blocks, started to overheat again. I don't see any visual leaks. Please advise

Jan 3, 2006 | 10:26 AM

kietlander

Racer

Joined: Sep 2005

Posts: 1,750

Likes: 58

From: OC

when was the last time the car got a new water pump?.

Jan 4, 2006 | 08:52 AM

PHLSingle

Pole Position

Joined: Jul 2003

Posts: 277

Likes: 0

From: New Jersey

All the belts ok? Bad / broken belt = water pump not pumping

Jan 5, 2006 | 07:56 AM

bigmalik00

Lexus Champion

Joined: Jun 2005

Posts: 3,131

Likes: 1

From: MD

funny as it may seem I started out with a non factory thermostat and I had the same problem. Please if you haven't get a Lexus(toyota) thermostat

Jan 5, 2006 | 03:00 PM

SupraCoup3

Lexus Champion

Joined: Nov 2001

Posts: 2,328

Likes: 2

From: PHX

heat in the car works by taking coolant and pushing it through a minature radiator, called a heater core. Lack of heat, could be lack of coolant moving.

the car overheating also points to coolant not moving.

Logical explination: Water pump isn't moving the coolant.