2007-11-30 08:05:25 · 6 answers · asked by bassman8095 1 in Cars & Transportation ➔ Car Makes ➔ Dodge
there is an air pocket in the heater core, and when the engine speeds up the coolant will run through the heater core. at idle the water pump doesn't spin fast enough. with the engine cool, remove the radiator cap and make sure the coolant is full. leave the cap off and run the engine until hot. open the bleeder screw on the intake. it looks like a brake bleeder screw. open it until the air quits and you get solid coolant. it may take a couple times. top off the coolant, replace rad cap. if you have a 2.7, there is a possibility of the bleeder screw spinning in the housing instead of coming loose. if this happens you would have to replace the housing.
2007-11-30 12:40:36 · answer #1 · answered by sprinkles 6 · 0⤊ 0⤋
You might have a bad thermostat; and you might have low coolant.
You also might have a partially blocked passenger compartment heater core.
When you car is idling, your water pump is running at its slowest speed. There may not be enough hot water flow to keep the passenger compartment warm.
When you drive at regular speed, your water pump is running much faster, pumping more water through the engine and your heater core. So you get heat.
I definitely would check the colling fluid level first. If the level is OK, go to a good radiator shop and have them pressure-flush your entire heating system; not just the radiator. Odds are this will cure your problem.
2007-11-30 08:46:05 · answer #2 · answered by MarkyP00 4 · 0⤊ 0⤋
CHECK the coolant level first, then the heater core to be sure you have proper flow through there, I dont think it would be the thernostat, it is either open or closed, normally if it stuck they are stuck closed and the car would over heat
2007-12-01 11:48:47 · answer #3 · answered by rjb792000 2 · 0⤊ 0⤋
your either low on coolant or have an air pocket in the heater core,that's what causes it to do that,you can bleed the system out and stop that from happening,also make sure that its full on coolant,if it gets too low it will continue to create air pockets and keep on doing this,bleed it at the bleeder screw on the intake,loosen it,with the engine running until you get solid coolant out of it,that should restore it to work right,be careful with the threads,sometimes they will strip,good luck.
2007-11-30 14:23:58 · answer #4 · answered by dodge man 7 · 0⤊ 0⤋
Wait till it cools off and check the coolant level in the radiator. You could have a bad radiator cap or just be low.
2007-11-30 08:11:14 · answer #5 · answered by Bob H 7 · 0⤊ 0⤋
you might have a bad thermostat
2007-11-30 08:13:52 · answer #6 · answered by noelsans 2 · 0⤊ 1⤋