like the title says: my heat doesnt work at idle...it'll get warm if im driving on the highway. i replaced the thermostat, bleed the cooling system, and checked my hoses and wires.....any suggestions?

 

might wanna check your blower. some people have found alot of **** blocking the blower which didnt allow it to heat up the car quickly

 

im thinking blower...but how would i check the blower w/o actually getting to it...im not really trying to pull my dash if it could be something else. thanks for the reply

 

sounds like it's your water pump, how many miles you got on your motor?

 

i was thinking water pump too...cause the heat does warm up almost instantly if i rev it up to about 2000rpm. does that make sense? i rebuilt my motor about 6000mi ago with a new water pump...do you guys think it might have gone poo-poo already? thanks for the replys. its cold in va.

 

does the car ever overheat? have you checked the compression to see if the head gasket is leaking?

 

it did overheat one day...i changed the thermo and bleed the system that night....it didnt overheat again... but while i was bleeding the system the heater was blowing cold air...now i have this problem. i should do a compression test tonight to see if my motor still loves me.

 

What you are describing is usually a case of a blocked heater core. They can get gummed up inside and the pump won't be able to flow well enough at idle to keep it supplied with nice hot antifreeze. Does honda run a block off valve in the heater core lines? You might want to look at that too. What I like to do is take the heater lines off, then take a garden hose and blow the heater core out.

I doubt it is the water pump. In all the years I've worked in shops and on the side I have only seen 1 water pump actually eat the blades up and cause a low flow situation.

 

did you check your plugs in the engine bay.. might be disconnected.. i've seen it a few times after a swap.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b-powa &raquo;</TD></TR><TR><TD CLASS="quote">did you check your plugs in the engine bay.. might be disconnected.. i've seen it a few times after a swap.</TD></TR></TABLE>

no check the heater core...he said it doesn't work when he idles... but when he's actually driving it will work...

 

I have the same exact problem... how would I get to the heater core? I guess im an idiot when it comes to that.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EGCoupe &raquo;</TD></TR><TR><TD CLASS="quote">I have the same exact problem... how would I get to the heater core? I guess im an idiot when it comes to that.</TD></TR></TABLE>

heater core jobs are good times,..involves taking off the whole ******* dash,..its kinda of a pain in the ***,..not hard at all,.just time consuming

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EGCoupe &raquo;</TD></TR><TR><TD CLASS="quote">I have the same exact problem... how would I get to the heater core? I guess im an idiot when it comes to that.</TD></TR></TABLE>


^^ take the dash out.. it is in the middle of the dash.. taking the dash out is easy.. puting it back suck...

 

thanks for the suggestions fellas. i got a day off tommorow so im gonna rip the dash out...ill keep you guys updated. thanks for the help.

 

good luck , i had the same problem when my headgasket took a ****.....somthing to think about

 

Headgasket is a good possiblity.... could also be the water pump is goin... not having engouh push to get it through the rest of the lines

 

sound like the heater core, if it gone it will not hold the pressure at idle and get cold, but when you drive the hot coolent flows and you get minimal heat right?