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-check the oil for water if there is you need to replace the head gasketDid you have the cooling system flushed out when you replaced all of the above items? Could be a blocked water port, or it maybe a faulty water pump.

On a Honda there is a bleader valve (similar to a brake one) on the gose neck. Start the car let it get warm and open the valve and let out the steam. As soon as water sprays out tighten it back up and it will work fine. You have to do this because the radiator sits lower than the engine.

Replace the radiator cap. This is a common problem on any vehicle. The cap is designed for a specific pressure(13-15 lbs on average). The cooling system is under pressure, so when the cap is bad it fails to maintain that pressure, effecting the flow of coolant.

You could have a blown head gasket.

of course it could be a lot of things... check the coolant sensor -- screwed-into the very bottom of the radiator. if the car was in a front accident or the radiator was replaced, the sensor (i think that's what it's called) might be bad. replaced the one on my old 86 accord lx, and that did the trick! good luck.

I'm in a similar predicament, however I'm replacing the sensor first, then the Fan Relay located in the fuse box (Becuase I've noticed my fans don't turn on at all !!) , then the thermostat... and if those don't resolve the problem, then I'll replace the water pump. Remeber replace the simplest, least expensive first.

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Check the coolant temperature sensors. On 4 cylinder 1990s Accords, one is located in the passenger side end of the cylinder head, near where the upper radiator hose comes in on the front. It's under the distributor and is a little hard to locate at first. This sensor tells the engine computer what is going on, and if it's bad, it can fool you in to thinking you're running hot even if your engine is fine, and it does affect the way the engine runs.

Also check the fan relay, located behind the glove box lid, and the temperature sensors (that operate the fan) located on the radiator.

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โˆ™ 2015-07-14 16:46:26
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Q: Why is a 1994 Honda Accord LS still running hot when idling after the thermostat radiator and both hoses were replaced?
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The thermostat in a 1992 Honda Accord is found in the thermostat housing. The thermostat housing can be found by following the lower radiator hose.


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Had the same problem on my 1991 accord. Replace the thermostat, gasket, and radiator cap. Also, get a gallon of coolant if your current coolant has been in there for more than three years. The thermostat is in the engine block. Simply drain coolant, remove the radiator hose from the engine - the hose that goes from the bottom of the radiator into the engine. There may also be a small spount that bolts into the block, remove the bolts and there is the old thermostat.


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