I'm having problems with my 2000 honda. It keeps

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Here is a site on how to replace it. But first make sure that the leak is at the thermostat and not a hose or a bad water pump. This can be done by using a cooling system pressure pump and putting the cooling system under pressure then looking for the source of the leak. A parts store may let you borrow a pump, or let a mechanic test the system for you. Always make sure that there is no pressure on the cooling system by squeezing the radiator hose before attempting to remove the radiator cap.

It sounds like it could be a head gasket or some migration of exhaust gas into your water jackets, do a head gasket leak test and that will determine what direction you take next, make sure the top hose has been bled of all air first

Your water pump is bad.

Follow the rubber hose from where it leaves your radiator. Where this hose connects to the engine is the general area where the thermostat is located. The hose typically fits over the fixture which is called the thermostat housing.

(I don't know much about cars so bear with me).

I've had problems of overheating previously where my car's thermostat would hit 140. I think I've fixed the issue, I've replaced the thermostat but it was still doing that and 2 hoses blew and needed to be replaced. I've had to consistently fill my radiator with 50/50 antifreeze on a daily basis to ensure it won't overheat, so far that seems to be keeping the peace.

But now as of 5 days ago, I'm experiencing these new issues of stalling. Upon taking my civic into my mechanic, his meter showed that there was a misfire in the 2nd cylinder a month prior and now all 4 are misfiring. He thought it was the head gasket at first. I had just recently replaced the spark plugs with NGK Platinums, new spark plug wires and a new distributor cap.

I've received many possible culprits to my problem consisting of possibly the Throttle Position Sensor, Fuel Filter/Injection, Distributor or a radiator cap. I'm financially strapped at the moment and only could afford the radiator cap which didn't solve anything, however my radiator is running on 80% water at the moment. I'm really at a loss and I feel like I've done what I could and I'm at my wits end. Please help my poor little Civic cheat death for a little longer.

could very well be the water pump. they dont always leak if they are bad. sometimes the impeller that moves the water through the system fails.

Doesn't sound good ,head gasket I think,Napa sells a combustion leak detector for about 40 bucks ,simple to use ,just some blue fluid that turns green if there is "exhaust" in the cooling system,might be cheaper than having some shop guess.

Hello and welcome to FixYa!

If you have overheating problem, it can lead to multiple issues. You may be running on low coolant that's why the vehicle overheats. If that's the case, please add coolant and make sure that it sits on the right level, too much coolant can cause overheating too for coolant will overflow.

The vehicle may have a faulty or worn out radiator blower motor that's why it overheats. If that's the case then you will need a blower motor replacement to resolve the issue.

If the radiator is clogged with dirt and rusts this issue occurs too. The coolant doesn't flow normally on the cooling system if it's clogged. If that's the case, I strongly suggest that you have the radiator flushed to drain out dirt and rusts. If you think that the radiator served you enough then it's better to have it replaced.

Please do check the radiator hoses, If you have worn out hoses it can cause coolant leakage which can result to overheating. A tiny hole is good enough for the vehicle to overheat.

A faulty thermostat sensor can cause the issue too. If you have worn out thermostat, the fan may not trigger that's why the fan won't work when under stressed conditions. A blown radiator blower fuse can cause this issue too so I suggest that you check the radiator blower fuse and replace it when necessary.

Hope you find this information helpful enough and thank you for using FixYa! Have a good one!

"Will start but will not turn over" What the hell do you mean by that ?
If you can start your engine then check the upper coolant hose, this one should get hot first, then, after thermostat opens, the lower coolant hose should start getting hot also, check both hoses every 30 seconds wile the engine warms up to operating temp. If any of the above is out of spec then I would change your water pump.

yes it has one. all you have to do is follow the top radiator hose from th front of the car to the engine block. the hose connects to the thermostat housing on the block