car not circulating water?

1996 HONDA CIVIC
120,000 MILES
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PAPAJOHNSLICE
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I need help, i replaced the thermostat, water pump, head gasket, and flushed the system many times, the water pump is working correctly, so is the thermostat, it over heated and blew the head gasket, i replaced the gasket, got new lifters, push rods and cleaned and resurfaced the head and cam, also had a valve job done, the car doesn't over heat for a while, but continuously bubbles and steams into the reservoir, the ac/heat switch was stuck, and anytime you would turn it to heat it would bounce back to the center, i fixed it so it would turn to heat, but no hot air comes out, my guess is the heater coil, but if im not mistaken that doesn't effect the circulation unless the heat is on, but heat on or off it still doesn't circulate, why can this be? Its close to winter where i live so i need to get this fixed as soon as possible, please help!! Thank you for your time
Oct 9, 2012 at 5:58 AM
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KHLOW2008
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Check the heater valve and cable adjustment. The part you mentioned about the heat lever bouncing back to the center indicates so.
Oct 9, 2012 at 8:31 AM
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PAPAJOHNSLICE
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That's what i adjusted to get the switch to go over all the way
Oct 9, 2012 at 5:21 PM
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KHLOW2008
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So did you solve the problem?
Oct 9, 2012 at 5:32 PM
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PAPAJOHNSLICE
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The problem remains, no water circulation, doesn't over heat, heater doesn't work, and it bubbles out of the radiator into the reservoir
Oct 9, 2012 at 5:48 PM
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KHLOW2008
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Are the cooling fans working?
Is the heater control valve adjusted correctly?
Oct 9, 2012 at 6:25 PM
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PAPAJOHNSLICE
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It doesn't have a cooling fan for the radiator, but alheater control valvesl fans work, not sure about
Oct 9, 2012 at 10:52 PM
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KHLOW2008
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If it does not have any cooling fans for the radiator, how can the vehicle operate without overheating?
Oct 9, 2012 at 10:54 PM
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PAPAJOHNSLICE
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Good point, im not sure how its not over heating, but even without a cooling, it's still not over heating, this is the first time I've ever seen this
Oct 9, 2012 at 11:25 PM
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KHLOW2008
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You better recheck. All vehicle needs cooling fans.
Oct 9, 2012 at 11:39 PM
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PAPAJOHNSLICE
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I know they need cooling fans, i worked in a shop for 2 years, but this still confuses me, it has a place for the fan, but doesn't have one, but it still doesn't over heat, it has no circulation, but still doesn't over heat, I've never seen this before, and im worried that i may damage something major without knowing it
Oct 10, 2012 at 12:28 AM
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CADIEMAN
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just to add to this 1.check to see if the parts store has a fan motor or fan blade or fan relay for this car.with no fans as soon as u turn the a/c on the car is going to overheat.did they magnaflux the head for cracks? at this point u need to get the kit and ck. for hydro carbons in the coolant.


Oct 10, 2012 at 1:32 AM
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PAPAJOHNSLICE
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Well it is supposed to have a fan but yet doesn't have one, im not sure why it isn't over heating, but its not, i have already blead the system of all air, and cleaned the a/c / heater fan and made sure it works, fluids are getting to the heater core, and going through, but not much past, all i can think of is a bad hose, but im not 100% sure, and we did an ultrasound and dye penetrate tests, the head is fine
Oct 10, 2012 at 4:25 AM
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KHLOW2008
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How long have you had the car?
How much driving have you made?
Is the heater valve opening fully for coolant to pass? When coolant is passing through are both heater hoses hot?
Is the aix-mix door working correctly?
Oct 10, 2012 at 5:47 AM
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PAPAJOHNSLICE
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Ive had it for about 2 years, put 50k miles on it, valve is open all the way, the hoses stay somewhat warm but not hot, and yes i do believe so
Oct 10, 2012 at 6:55 AM
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KHLOW2008
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I can't believe you can run the vehicle for 50 k without cooling fans. Maybe the manufacturer would like to learn from you how to do it. You are going to be rich and famous.

Did you check the heater core for clogging? The heater hoses should be hot, at least as hot as the coolant running in engine.

Oct 10, 2012 at 7:37 AM
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PAPAJOHNSLICE
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It is circulating through the heater core, and the hoses are the same temp as the radiator hoses
Oct 10, 2012 at 8:21 AM
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KHLOW2008
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In this case no heat means the air mix door is not working correctly.
Oct 10, 2012 at 8:36 AM
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PAPAJOHNSLICE
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Alright, but that wouldn't explain it not circulating
Oct 10, 2012 at 3:49 PM
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KHLOW2008
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Why do you keep saying it is not recirculating?
Oct 10, 2012 at 5:17 PM
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PAPAJOHNSLICE
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Because if it was than i would be able to see it undernieth the radiator cap when the engine is warm, but instead it just forces the fluids out
Oct 11, 2012 at 8:45 AM
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CADIEMAN
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when the thermostate opens it lets the water pump, pump the water through the system.i see a fan listed for your car at the parts sites.so u have a fan assembly.u need to replace the cap or test the rad. cap.your cooling sys. is not oper. properly.this is why your head gaskets blow.u need to install a fan assembly................
Oct 11, 2012 at 11:17 AM
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KHLOW2008
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The coolant is being forced out because it is overheating. The system works at around water's boiling point and without the pressure cap on, it definitely would be forced out unless the cooling fans starts to work, which is a prblem because you do not have any cooling fans.

Oct 11, 2012 at 11:31 AM
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PAPAJOHNSLICE
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I know this, again i worked in a shop for 2 years, but what i don't understand is why it won't over heat (the car) even though it's not circulating
Oct 11, 2012 at 7:31 PM
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KHLOW2008
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The coolant would be circulating when the cap is closed. The opened radiator cap would allow coolant to be forced out. that is simple logic.

What defies logic is why doesn't it overheat with no cooling fans. You mentioned working in a shop for 2 years, how much have you learnt about the principles of the cooling system?
Oct 11, 2012 at 8:15 PM
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KHLOW2008
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Btw, fill the coolant to slightly below the radiator neck and most probably you would be able to see the coolant circulating.
Oct 11, 2012 at 8:19 PM
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CADIEMAN
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do as khl said.also use a screw driver to hold the throttle oh about 2000 rpms.watch in the hole in a few mins. you going to see some circulation.i think its going to puck all the fluid out.because you have cracks in the heads.u never checked that did u!
Oct 11, 2012 at 11:21 PM
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PAPAJOHNSLICE
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I set the coolent to the correct level, i learned allot and ive been working , it's not circulating,on cars since i was 11, and it's still not circulating, i would be able to tell if it was, and i had the head ultrasounded, and dye penetrate tested, the head is fine! Even with the rpms up it just spits out water like normal, I've asked many people and nobody can answer why its doing this
Oct 12, 2012 at 1:17 AM
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CADIEMAN
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DID THEY MAGNAFLUX TEST THESE HEADS FOR CRACKS?????????????IF U CANT KEEP IT RUNNING BECAUSE COMPRESSION IS LEAKING INTO THE COOLANT SYSTEM AND ITS BLOWING THE COOLANT OUT!!! USE A SNIFF KIT ON IT.ILL ALMOST GARRENTY U HAVE EXHAUST GASES IN YOUR COOLANT THEN U WILL HAVE YOUR ANSWER. WHEN I DID HEAD JOBS I WHEN TO THE MACHINE SHOP THROUGH MY HEADS ON THE COUNTER AND PICK UP A REBUILT SET.IS THIS WHAT U DID?
Oct 12, 2012 at 1:57 AM
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KHLOW2008
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Try running a garden hose through the radiator cooling fins to see if coolant spits out.
Oct 12, 2012 at 1:01 PM
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CADIEMAN
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he needs to do the sniff test then he will know the answer. im betting it will show exhaust gases.then u are going to have to pull the head and get a rebuilt one.yes the head was good but how many times has it been overheated???????????this is nonsense every car has a rad. and fans.i look your fans right up have u? im done khlow goog luck bro.
Oct 12, 2012 at 9:44 PM
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PAPAJOHNSLICE
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I work on aircraft for a living, magniflux isn't as good as ultrasound, however i will get the test done and let you know, and water did go through the cooling fins, oh and i put on a radiator cooling fan
Oct 12, 2012 at 10:41 PM
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CADIEMAN
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do the sniff test on the coolant for your answer.
Oct 13, 2012 at 12:22 AM
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PAPAJOHNSLICE
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I fixed it, turns out it needed a sensor for the fan, and a back flush, heads fine, thanks for all your help!
Oct 13, 2012 at 3:08 AM
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KHLOW2008
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If you don't have a cooling fan, what is the fan sensor going to do?
Oct 13, 2012 at 11:21 AM
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PAPAJOHNSLICE
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Read back to my earlier messages, i said i bought a fan for it, however i forgot to mention it wasn't working, so i checked it and the fan worked, so i replaced the sensor and now its working great!
Oct 13, 2012 at 6:51 PM
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KHLOW2008
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Sorry, that was one of the last replies you made and it slipped my attention. I had been trying to get you to understand the problem but you keep going in the wrong direction.

We try to understand your problem to be sure of the cause and whatever information we knows comes from you. Wrong information means wrong or no answers. If you had not locked your mind on the problem onto something else, the problem would have been resolved long ago.

You busted your head and gaskets because of over heating due to the missing and non operational cooling fan in the first place and I am still surprised how you managed to get it to run for so long without it. The only answer I can think off is you either don't travel in high traffic areas with very short low speed driving or your travelling distances/time are short.

Anyway good to know you have the problem fixed.
Btw air craft engines do not use cooling fans if I am not mistaken, they don't fly in in traffic jams conditons.
Oct 13, 2012 at 7:59 PM
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PAPAJOHNSLICE
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Well i appreciate all your help, However im not sure why it didn't over heat without the fan, buy i never had problems with it until the water pump went out, i did blow the gasket, but the head is fine (surprisingly) and you're somewhat right about the airplanes, single engine planes do have a cooling fan, its called the propeller haha, but almost all single engine planes are air cooled, much like the older bugs
Oct 13, 2012 at 11:21 PM