I have a 92 isuzu rodeo my old radiator blew so i replaced it and the thermostat yet it started over heating again...the hoses are fine what could be causing it to heat up? turning the heat on doesnt help either
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Re: 92 isuzu rodeo overheating still
Hey u says that u didn't replace the thermostat yet Your thermostat is sticking. DO NOT DRIVE if the car
overheats, you can do some serious engine damage, if you haven't done so
already. Get the thermostat changed out immediately.
What happened is
your thermostat is sticking. It was stuck and you saw it overheat (and should
have stopped immediately). The added pressure from having a stuck thermostat
pushes the fluild into the overflow.
The temperature may have gone back
to normal if the thermostat "finally" opened. However, since the thermostat is
sticking, it is unreliable and I would get it replaced.
Driving when the
engine overheats can easily cause gaskets, such as the head gasket to fail and
heads to warp. If this has occurred, you're looking at a new engine.
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Whining could be the water pump. That would cause over heating and to much pressure which blew out an old radiator. An over heated engine will not have power. But it also could be the engine is worn out and has no compression in the cylinders. Do a compression test first, before throwing money at it.
you should get a head gasket test done on the car as it will detect if there is any combustions chamber gas in the coolant.also check to make sure the cooling fan is operating properly as if its not can cause an overheating condition.
if it overheats quickly, you may have a blown heat gasket - if it overheats slowly, check your fan clutch - if it is worn out the fan won't turn fast enough - also check inside the radiator to see if the passages are clogged - if there is a lot of build up around the openings then you will need to replace the radiator or take it to a radiator shop and have the top removed so they can clean out the passages - also make sure there is nothing obstructing the flow of air through the radiator like leaves or paper that might have blown up from the road - good luck and have a nice day :O)
if the radiator is clogged or (gunked up) prestone makes a kit to flush the coolant system its sold at most parts stores you will cut the upper heater hose and put the adapter in line than pour in a flush of your choice and follow those directions it should end with you attaching a water hose to the adapter and flushing the entire cooling system. And yes i would definitly change the thermostat especially when you say it was approaching the red this could be the first signs of a sticking thermostat. hope this helps
check the electric fan conector plug some times is rusti scratchet whit a sharp scruwdriver remove the rusti or dirt on it this happens many times and step two check the relay and thats it (this is the first step a mecanic to search)
The water temp (coolant temp) is cold all the time? Thermostat stuck open. Replace, not good for car. Computer can't adjust well to that and will cause fuel economy issues, never allow car to warm up properly. Opposite of thermostat stuck shut causing overheating. If the water can't be restricted enought to heat up and then be maintained at the correct temperature your car is not operating efficiently, won't pass smog I'd assume, etc. Thermostat is at end of upper radiator hose in thermostat housing. Two bolts to remove. Pop out thermostat and see if its stuck open. It'll have a gap if it is and it will be shut if not. You can boil water vigorously and hang your thermostat in it with a wire or something and watch it. It should move open from closed at a noticeable rate. When removed after fully opening, it will close as it cools. If it doesn't move and is stuck or moves EXTREMELY slowly it's done. Replace gasket, replace thermostat, light coat of sealant on gasket if you wish and torque down evenly. Replace lost coolant. Hope this helps.