I have no heat in my 1995 dodge 1500 4x4 just changed my thermostat and i have no heat inside the cab. I checked both sides of my heater core hoses and they are hot. what sould i do next

either you have a bad thermostat or you have a air lock in your heater hoses remember your heater is fed by the hose by the upper rad hose return is the hose going to the water pump, to bleed the air out fill rad leave the rad cap off start engine run for 5 min. the check the coolant level,fill to top of neck replace rad cap tight, K-D tools make a special funnel to solve this air lock problem

check heat hoses going into fire wall to heater core should be hot when engine warm solution clogged hoses going to heater core

check coolant level if good then check heater hoses they should be the same temperature when the car is at operating temp,if good then change the thermostat if its not the same temp then you could have a heater core that is plugging up,

change the thermostat flush the heater core by removing the hoses from the engine that go to the heater core and take a garden hose and run water through the core on the hose that comes off the thermostat housing til it comes out nice and clear. put back together fill with coolant. it is probably going to be rusty looking but you cant fix that.

might be a blend door not opening or closing,more than likely a clogged heater core,remove both hoses and run alot of water thru it

Hello, No! I'm assuming that the temp gauge is working in truck & you are not over heating. On the passenger side firewall check both hoses going to/from heater core. If both are not warm then it is probably a heating core plug. You will have to replace the heater core.

May be a plugged heater core. OR Someone removed your thermostat to cure you overheating problem. Remove heater hoses , (in and out hoses) leading to and from heater core and try to blow through it. DO NOT clean out using more than 16 p.s.i. as this will burst you heater core.Also check to be sure heater flap is opering to let heated air into cab.

Why was radiator replaced?Did it have heat before ? If it was plugged, the heater core may also be plugged. Try flushing it with a water hose in both directions. I dont know why the botton radiator hose would be cold, the radiator should be a uniform temp and the air coming through the radiator should be HOT, when the engine is at operating temp. What condition was the old coolant? if it was rusty, the water pump may have lower flow than normal.

possible bad heater core

if you got heat when its running and almost nothing iddling the heater core inside the car has rectriction idle circulation not enough prestone pass thrue the radiator because of scale when our driving way more circulation more prestone go thrue ¸=more heat you need to flush the radiator inside the car normally i put a radiator flush leave it running longer then what they say go for a drive remove the heater core hose be carefull not to break the pipe use garden hose pass hose water pressure o n both side do it a few time each side flush all the prestone add new prestone you shoul have way more heat good luck p.s some shop might tell you change the heater core that perfect but very big money do it right its cheap and gonna work pierre