well I've had this problem for a while now. no heat and i've been through a ton of stuff with no luck. I've tried bleeding it with the front end jacked up. priming the heater core lines and the block.changed the t-stat. swapped the heater core hoses around. replaced the head gaskets. the heater core won't even get warm. I've ran water through the heater core with a garden hose and it seems to flow ok. could this be a possible clog in the radiator??? i'm stumped. I also get coolant blowing out like crazy when the t-stat opens up out of the radiator with the cap off but it does it kinda intermittently. the only thing I haven't done is change the radiator. could this be it?
no heater, clogged radiator??? help please
- Thread starter slopony
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CC'S95GT
Post Whore
have you looked at that small hose coming off the water pump. might have a kink there. when you flushed the heater core did you do it both ways? and was the water out as fast as going in?
CC'S95GT
Post Whore
is the other hose off the w.p. kinked? not the bypass , the longer one. i just ck'd mine and it had a small kink in it, but i guess enough coolant gets through that i don't have a prob. also ck the hoses at the fire wall. when you flow'd the core where did you disconnect the hoses from? at the f.w. or at the front of the motor. try flowing the core from the front of the motor and flush it both directions. do you hear any gurgling sounds as the motor warms up?
GearGambler
Member
disconnect the hoses going to the heater core and start the car. if the coolant isnt flowing, then the problem is before that point. i believe the core is fed by the manifold and goes back to the water pump. so you could pull the hose going back to the water pump and see if thats getting water. take it section by section and you'll find out the problem.
dumb question, but is the radiator full?
dumb question, but is the radiator full?
94kingcbra
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Get a wide and tall funnel that will hold about a gallon atleast a foot above the radiator but seals in the filler hole...run the engine and fill to to where there is liquid sitting in the funnel, and you should see little bubbles coming out..run the heater and wait till all the bubbles stop....Good Luck
no hoses are kinked. i've swapped the heater hoses going into the heater core with no effect. which hose goes where? there is a restrictor on on of the lines. does it go on the in or out of the heater core? I do know there is poor flow going into it. the flow is intermittent. the cooling system seems to be over pressuring it's self. it will blow coolant into the overflow very rapidly, especially when I shut the engine off it dumps into the overflow like crazy filling up the tank and overflowing to the ground.
CC'S95GT
Post Whore
are you sure all the air is out of the system. did you have this prob before you replaced the HG? is there a chance the head gaskets were on backward thus restricting water flow. that's a shot in the dark as i don't know for sure if that's even possible.
yes, same problem before the head gaskets. I thought they might be on backwards so I pulled the heads. I belive all the air is out. the only things left is the heater core and radiator. I know the flapper for the airbox in the dash is ok. I used a mirror to confirm its opening and closing. I don't think the heater core hoses are getting hot. maybe luke warm.DESERTCOX05 said:
did you replace the water pump? The reason I ask is that if you have, it is possible(unlikely) that the one you installed is rotating the opposite way. Also do you have an actual gauge or just the factory indicator? What temp is your car running at? You might also try running water through the heater hose to see if you have some sort of blockage.
Good luck and keep us posted
Good luck and keep us posted
in one of the curly rubber lines going to the heater core there is a metal restricter about 2 or 3 inches from the end of the hose that connects to the metal line that run to and from the engine. if you look it is held in there by a metal crimped tie so it won't move inside the line.topless95 said:
no, same water pump as before. it is turning counter clockwise like it should. I bought a new radiator tonight and am gonna try that. I think the previous owner (my father in law) may have put some type of stop leak in. I do remember that I cleaned a bunch of shit out of the coolant recovery tank when I pulled the motor for the rebuild. maybe it clogged it up.topless95 said:
GearGambler
Member
is there a thermostat in the lower intake?
94kingcbra
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Picture?
i've got to find my camera to get some pics up.
new radiator in and still the same thing. I did notice that after I let it idle for a while and get good and warm I put the cap back on and it sucked the upper heater hose closed.
new radiator in and still the same thing. I did notice that after I let it idle for a while and get good and warm I put the cap back on and it sucked the upper heater hose closed.
