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1995 Chevy Monte Carlo Cooling problems

Tiny
J_BROWN
  • MEMBER
  • 1995 CHEVROLET MONTE CARLO
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
Here is the story. Started getting coolant leakage under the hood and it was all pooring from the area of the water pump. Had the water pump replaced, then after I got it back from the mechanic it started to overheat, which it didnt do before I took it in. So then I noticed it was spraying from the radiator cap and was spraying up and over towards the water pump. So likely it wasnt even the water pump to start with. So now I have replaced the radiator cap, didnt help. Replaced the temprature sensor, fan relay and still nothing. Note the whole time the fan wouldnt engage. So now I hard wired the fan to a toggle switch and it still does not cool it. Still says its over heating. Someone said maybe the temp gage is not working so now I dont know what else to do other than replace the radiator. Any suggestions?
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Tuesday, February 10th, 2009 AT 5:09 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Did he replaced thermostat, could also be air in the system and radiator clogged-up-If it continues to overheat have it block and pressure tested.
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Tuesday, February 10th, 2009 AT 5:25 PM
Tiny
J_BROWN
  • MEMBER
  • 4 POSTS
I replaced the thermostat, temp sensor and fan relay. Mechanic replaced the water pump. Just an odd coincidence that the fan and something else goes wrong at the same time. Is there another sensor other than the temp sensor that reads the temp? I will have that pressure test done
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Tuesday, February 10th, 2009 AT 7:47 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
I've looked if it has an engine temperature gauge switch but there's none. The computer reads off from the coolant temperature sensor and then activates the relay to power up the fan motor.

If it continues to overheat you need to have it block and pressure tested could be a problem with the headgasket, cracked head and block or an intake manifold gasket.
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Tuesday, February 10th, 2009 AT 11:20 PM
Tiny
J_BROWN
  • MEMBER
  • 4 POSTS
I was thinking about just spending the $35 on the pressure gauge and testing it myself. Is this something I can do, and if so can you give me the pressure ratio and how to do it?

Again its a 95 Monte Carlo 3.1

Thanks
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Wednesday, February 25th, 2009 AT 9:21 AM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
At the radiator cap it will give you the pressure rating-hook up the tester on the radiator fill neck -pump the coolant pressure tester to that amount and observe the tester as per the instruction on it
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Wednesday, February 25th, 2009 AT 2:04 PM

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