MY 1997 S-10 JUST STARTED RUNNING ROUGH, CHECKED EVERYTHING,SEEMED OK, THE NEXT DAY ENGINE LIGHT CAME ON, NEXY DAY IT OVER HEATED AND NOTICED NO COOLANT IN RADIATOR BUT RESOUVIOR WAS HALF FULL, CHECKED OIL TO SEE IF THERE WAS ANY WATER IN OIL,I DIDN'T SEE ANY. I HAD A NEW RADIATOR PUT ON IN JANUARY AND HAD NOTICED I COULD HERE WATER GOING THROUGH SOMETHING IN THE DASH ON THE PASSANGER SIDE, MAYBE THROUGH HEATER CORE, THERES NO COOLANT ON THE GROUND, WHAT WOULD YOU SUGGEST TO DO, HOPEFULLY IT'S SOMETHING I CAN FIX.MAYBE HEAD GASKET,SOMEONE SAID?
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Re: NO COOLANT IN RADIATOR, BUT COOLANT IS RESOUVIOR
First thing to do is start it up and stand by the exhaust, and if you can smell anything like antifreeze chanses are its a head gasget, if you don't see any puddles under car its got to be going someware and chanses are its out the exhaust. The only true way to know where its going is to do a cooling pressure test.
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Your mechanic needs to figure out where the coolant is going. If it is not showing up under the car or on the floor mats in the car, then the problem may be either a leaking head gasket or in your radiator. If it is the radiator, coolant may be getting into your engine oil and this is very serious.
Check oil and coolant levels (at the radiator cap) first. Run fault codes to find which sensor triggered the engine light . The light is to tell you that the engine is in danger of failure so do not dismiss the light as not important.. Hot smells mean that the engine is very hot and you may not have any coolant in the system to activate the temp light or gauge.
It may be anything. The good news is that if the cylinder head gasket is blownup, then the temperature goes up and never comes down. If you wil not correct the coolant temperature soon, a bloun gasket will complicate the situation. Sounds like a poor circulation from engine to radiator. The cooling process of a car involves:
1 - The heat generator - ENGINE
2 - The cooling device RADIATOR.
Coolant transfer the heat from Engine to the Radiator. From the radiator the sream of air absorb the heat from the radiator and the engine cools down. If the system has no leak, there are twoo factors that affect cooling.
1- Circulation of coolant from Engine to the Radiator.
2 - Circulation of the air through the radiator.
You have to make that you have a good circulation from engine to radiator.
The cause might be:
A bad water, pump, thermostat, or AIR POCKETS in the cooling system.
To check and normalize this you have to:
Rise up the front of engine on oil change ramps.
Top the cooling system with coolant 50/50.
Open the bleedin nipple of cooling system, and add coolant till you see coolant of the blleding nipple.
Start the engine and open the ait blleding screw. If you will se a stream of coolant going up, then you have two good news. No air pockets in the cooling system, and a good water pump. geea start leaking.
Do not run engine for more than 5 minutes. Stop the engine.
The next day with cool endine repeat again the same process.
Make sure that Radiator is free from debris. It is a good idea to clean it up. A water hose can help.
Check your serpentine belt. If ok then check engine coolant if that is ok take off radiator cap start engine and watch to see if the coolant in the radiator starts to circulate when engine reaches operating temp. If it don't change engine thermostat if all fails to get coolant moving then you will have to change the water pump.
Sounds like you have a faulty head gasket or maybe a cracked head.This can cause overheating and the check engine light to come on.The code for the o2 sensor is probably caused by coolant getting into the exhaust system and coating the sensor.The coolant fan may work but it cannot remove enough heat from the rad to make the engine cool off.Try some engine coolant stop leak to see if it will help.This maybe only a temperary fix.Let me know if you need more.MOE
Your cooking the oil in the engine ( getting to hot/possible oil leak on top of engine). Check the front of the radiator for anything that will cause air not pass through the radiator.If you find any bugs/trash/or a build-up dust or dirt clean it out. Next check to see if the radiator and coolant recovery jug has any antifreeze in it. If not refill each to proper levels with a 50/50 mix antifreeze. Then if all is good run the car in the morning and as it is worming up put your hand on the upper radiator hose to feel if it is hot or cold. If the hose is hot and you can feel the antifreeze moving through the hose then the pump is working correctly. If not and the hose feels luke warm with no movement of fluid then the thermostat is stuck closed and will need to be replaced. Also you need to replace the engine coolant temperature sensor (ect) on engine. Hope this will help you.