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Overheating problem

Tiny
MONEYSAM
  • MEMBER
  • 1995 LEXUS GS 300
  • 230 MILES
My brother has a 95 lexus gs300 for some reason his radiator hoses are getting swollen all the time had to replace the top hose today it burst. He thinks its the thermostat idk tell me what u think
Tuesday, July 3rd, 2012 AT 12:23 AM

18 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Is the engine actually overheating?I could have just been a old hose that got weak over time?
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Tuesday, July 3rd, 2012 AT 12:28 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
The fact that it is overheating is a problem. You have a problem that needs to be resolved and from this hot condition, the pressure rises and the hoses cannot take it. You may have blown a head gasket and compression in the cooling system may be expanding the hoses.

Roy
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Tuesday, July 3rd, 2012 AT 12:28 AM
Tiny
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  • 173 POSTS
Ok the temprature gauge isnt workin but when it gets hot the water boils in the overflow also
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Tuesday, July 3rd, 2012 AT 12:43 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
How long has it been overheating?

Roy
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Tuesday, July 3rd, 2012 AT 12:45 AM
Tiny
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  • MEMBER
  • 173 POSTS
I want to know if u have the procedure to change the temperature sensor
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Tuesday, July 3rd, 2012 AT 12:49 AM
Tiny
MONEYSAM
  • MEMBER
  • 173 POSTS
I checked da oil and there is no water mixing with the oil but I know that still doesnt mean the head gasket isnt blown.
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-1
Tuesday, July 3rd, 2012 AT 12:58 AM
Tiny
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  • MEMBER
  • 173 POSTS
But we wanna at least get the temp sensor and gauge workin so we can see what the temperature gauge is sayin
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Tuesday, July 3rd, 2012 AT 1:12 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
There you go.
Image (Click to make bigger)
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Tuesday, July 3rd, 2012 AT 2:00 AM
Tiny
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  • MEMBER
  • 173 POSTS
Its been doin that for a while he said usually when he run da ac but I told him to stop runni n it all together
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Tuesday, July 3rd, 2012 AT 2:03 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
So is the radiator fan coming on like its supposed too?
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Tuesday, July 3rd, 2012 AT 4:24 AM
Tiny
MONEYSAM
  • MEMBER
  • 173 POSTS
The fan hasnt been working for a while. He said it would only bubble in the overflow after he ran the ac I told him to stop runnin the ac today and c what happens I checked the fuses to the coolant fan and they were ok didnt check the relays didnt really know how. But the fan never comes on but its hooked up.
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Tuesday, July 3rd, 2012 AT 4:36 AM
Tiny
SATURNTECH9
  • MECHANIC
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Check out the sensor and see what you find but without the fan working its going to overheat. Have you tried adding power and ground to the fan to see if it works?
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Tuesday, July 3rd, 2012 AT 5:26 AM
Tiny
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  • MEMBER
  • 173 POSTS
No dnt know how to do dat
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Tuesday, July 3rd, 2012 AT 5:53 AM
Tiny
MONEYSAM
  • MEMBER
  • 173 POSTS
One thing I noticed that was kinda odd was when I put water in the radiator it seemed like there was alot of hot air coming from the top hose causing the water I was tryin to pour in to splash bk out
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Tuesday, July 3rd, 2012 AT 6:02 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
That is caused by water boiling in the block normally caused by poor circulation and air locks.
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Thursday, July 5th, 2012 AT 7:15 AM
Tiny
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  • MEMBER
  • 173 POSTS
So whats the procedure to get rid of that?
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Thursday, July 5th, 2012 AT 7:40 AM
Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
Replace thermostat and run with heater on keep an eye on temp and water level, when thermostat opens keep the engine running and add coolant as required ensure heater is hot and run for about 5 min this should ensure all air is bleed from system.
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Thursday, July 5th, 2012 AT 9:00 AM
Tiny
SATURNTECH9
  • MECHANIC
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Adding water when its hot like that is a good way to get burned sounds like your trying to add water when its overheating. Also if the radiator fan isnt working doesnt matter if you get all the air out its still going to overheat.I would get the fan working then see whay happens.
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Thursday, July 5th, 2012 AT 4:35 PM

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