2002 Nissan Sunny engine temp going high

Tiny
GBHATTA73
  • MEMBER
  • 2002 NISSAN SUNNY
  • 1.8L
  • 4 CYL
  • 2WD
  • MANUAL
  • 314,000 MILES
Engine temp going high, radiator changed new, I fill the radiatorfull with coolent, when I start the engine coolent full to coolent tank and over flowoutside. So coolent in the radiator going low so Engine temp going high, so what is the problems, give the solution, 3month befor colling pump also changed(original nissan).
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Wednesday, November 26th, 2014 AT 10:28 AM

7 Replies

Tiny
JOHNNYT73
  • EXPERT
When the coolant gets drained or leaked out. You will get air in the system in other parts of the cooling system. When you first filled the radiator after installing it. Did you fill it, leave the cap off while it was running till it reached operating temperature (thermostat open), then raise the rpm to about 3000 a few times, fill the radiator again with coolant, and check to see if you have heat. IF you did all that and you coolant was low again then you have a leak somewhere else.
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Wednesday, November 26th, 2014 AT 10:41 AM
Tiny
GBHATTA73
  • MEMBER
I fill the coolent in radiator. After start with cap open, I start the engine the colent come out from the radiator with air bubbles, I control leakge but this is continue. The mechanic in his workshop he telling some engine problems.I seen in coolent there is no oil. Please tell me the solutions for this problems.
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Thursday, November 27th, 2014 AT 2:32 AM
Tiny
JOHNNYT73
  • EXPERT
Ok, when you pull the oil dipstick does the oil have a milky consistency?
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Thursday, November 27th, 2014 AT 4:25 AM
Tiny
GBHATTA73
  • MEMBER
No oil is normal
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Thursday, November 27th, 2014 AT 8:50 AM
Tiny
JOHNNYT73
  • EXPERT
Ok, have you replaced the thermostat? Seeing bubbles will be normal after first filling the the radiator when the engine is running cause it is pushing air of of the system. If you continue to see a lot of bubbles then it could mean you have a leak in the head somewhere and compression is going into the cooling system (forcing in air). The coolant will boil if the cap is off and been running for a while (dont mistake that for bubbles).
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Thursday, November 27th, 2014 AT 12:36 PM
Tiny
GBHATTA73
  • MEMBER
Mechanic removed the thermostart, but I seen coolent boiling, this is the head gasket problem? Can I tell to change head gasket? Please tell me what I can change the spare parts.
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Sunday, November 30th, 2014 AT 2:33 AM
Tiny
JOHNNYT73
  • EXPERT
If coolant is actually boiling (not overheating) then you may just need a new radiator cap. The is meant to to build up pressure in the system (about 16psi). A fluid under pressure raises its boiling point. If the cap is faulty then it may not be holding pressure at it should. Have a new thermostat installed if you havent already to just be sure. I still cant say for sure your head is good or bad. I can only go off your info that you have provided me thus far.
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Wednesday, December 3rd, 2014 AT 3:59 AM

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