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Yes, pull out the plug and replace a damage O'ring.

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Q: Is it possible for a drain plug on a radiator to go bad because collent is ever so lightly leaking out your drain plug or the weeping hole of the drain plug you had a pressure check done on the colli?
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wow, sry to say this but, when oil gets into your collent or collent gets into your oil, that means you have a blown head gaskit. Regards, Shaun


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What would cause a 98 Pontiac sunfire to overheat if the water pump thermostat and temperature sensor have been replaced and it still overheats?

Check to see if fan turns on when the temperature reaches 3/4 of the way it should stay over half and between three quarters to the red line fan might be shout or relay.PS brown foam only indicates mosture in the block common on most vehicles. two if it was a head gasket crack between water jacket and oil. Oil would go into the collent and radiat into the over flow bottle now if it is cracked into the cylinder easy check is remove radiator cap and have someone crank the motor over should have collant spraying out of the radiator due to compressionAnswerCould be the head gasket check your oil to see if it has water mixed in with it Answermight need to flush radiator, is thermostat in correctly? By correctly, I think it might be one of those where it's possible to put the stat in backwards.I agree blocked radiator (first thought, actually) now agree head gasket likely suspect.Take your oil filler cap off and see if it's all gunked up with a brown foam.Phil


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Pretty easy job actually. Drain the coolent. Open the hood and look for the large radiator hose that goes from the top of the radiator to somewhere on the middle of the front of the engine's top. The hose attaches to a part called the "goose neck" which is held in place on the intake manifold by two bolts. Remove the two bolts (often you do not have to disconnect the radiator hose first but you may have to) and you will find the thermostat under it. Remove and replace the old one, put on a fresh gasket (make sure the surface is clean first) using a sealer if you prefer and then bolt the gooseneck back down. Usually the bolts are 3/8" and require about 20 foot pounds of torque. Replace the collent. Its about a 30 minute job and generally you'll need a screwdriver and set of socket wrenches. Hope this helps.


Where is the thermostat and do you have to replace it or can it be repaired you just had your coolant replaced and now your car heats up to above 200 in about 5 min?

You really don't want to try to replace the thermostat. It's a bear to get at and it's almost certently not the problem. When you change the coolant, air is left in the cooling system and has a tendency to collect in areas where it is trapped and restricts flow. To correct this there are two small brass bleed screws provided to "burp" the system. One screw is on the thermostat housing which is connected to the upper radiator hose, the other screw is on a black riser near the water pump. To bleed the air (burp) the cooling system warm the engine to pressurize the cooling system. Use a nut driver or socket on a long extension to open the bleed screws a turn or two, use care to stay back from the hot coolant. Again you do not have to remove the screws, they have a small hole which is opened when the screw is loosened a turn or two (similar to brake bleed screws). Wait until you get a steady flow of collent which shows that all of the air has been removed from the cooling system. This should do it, if it needs to be done more than a time or two, you are probably getting air into the system from another source, possibly (as in my case) from a blown head gasket allowing combustion gases into the water jacket. If this is the case repost and we can talk about it. Head gaskets arn't impossible to do for the reasonably hand shade tree mechanic, or just fork over $2000 to the dealer and be done with it. See ya 94


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