Question about 1992 GMC Jimmy

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Waterpump leaks the gasket on the back of the water pump leaks. can i just put something in the coolent to stop this and where do i put it

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Maybe. You could put an additive in, at the radiator cap, but there is no saying it will stop the leak. Are you sure it's the gasket and not the water pump itself. It has abuilt in leak to let you know it's wearing out. Check under the water pump and see if your coolant is coming out of the small hole on the bottom of the pump. If it is change the pump.

Posted on Aug 01, 2009

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It is hesitating and getting hot evry time runned and coolent has to be put back in the car daily

well there are a few things that go wrong on this year and model. especially if its a 3.1.or 3.4, first off, intake manifold gasket may be leaking, check all around intake. mine did the same thing. if ok then check head gasket for leaks. if all is ok check water pump. if car is idleing, and you see coolant from releif hole that means the water pump seal is bad. it is possible for a water pump to be bad even if it is not leaking coolant. sometimes the fins on the back of the impeller, can corrode away. the only way to check is to remove pump. have a good day !!

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im guessing that maybe your thermostat is sticking. im not sure what else would make your coolant rush out like that. if im right, then that would definitely make your car overheat at speed, but not at idle. that isassuming that the thermostat is at least partially open. if that doesnt fix the overheating, then u may want to consider checking the ignition timing for being too far advanced, or even the camshaft timing.

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sounds like you didn't get the gasket replaced corectly or you did not get all of the old gasket off try to see if it is leaking at the new water pump

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If the radiator has air bubbles it usually indicates a blown head gasket. It sounds like it has blown between the cylinder and the water jacket, this will cause overheating and pressurizing of the cooling system without mixing of fluids. A garage can check this by putting a pressure gauge on the cooling system. It is advisable not to drive too far, as if it gets worse it can fill a bore with water which can Hydraulic on start up and do some serious damage ( bent conrods etc ). Waterpump issues are usually leaking seals or noisy bearings, it is unusual for them to stop pumping. If the Head gasket is blown it wont hurt to replace the waterpump while the engine is in bits.

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I will agree with your uncle and say that you should check the water pump. Start the vehicle and look at the water pump. Most water pumps have a "weep hole". If there is coolant coming out of this hole the water pump is not working properly. If not, and if the temperature has been running normally, you may have fixed the problem when you replaced the cap, if the water pump is good and the temp has been running high, then check the thermostat. Hope this helps and good luck.

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Could be a hose or the water pump either way when it leaks your fan is blowing the coolent back on your engine and could be blowing on your ignition wires making them wet and causing a miss fire. Do you have to add coolent regulary?

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