hey guys i need some advice,my heather is not working anymore,it just blows cold air from the vents no matter how hot the car is ,i tried flushing the condenser but it did not work at all.also the only place air comes out is from the top of the dashboard,any help would be great.thanks in advance

 

When my heather stops working I usually use a little Miracle Grow.

No, just kidding, I know English isn't your first language.

Heather = a type of plant.
Heater = what you're talking about.

 

sorry,i have some trouble with my english(i barely use it)but i learned something today,now about my heater problem...?

 

replace your thermostat about a 4 dollar part and about a 10-30 minute job depending on skill

you'll probably notice your car running a little better and the coolant temperature may be lower as well

 

Is their water/anitfreeze on your passenger side floor board?

You could have lost vacume to the flapper doors, and its not routing the air over your heater coil.

I know on the v6 models (not sure on v8's) you have a bypass valve under the hood that diverts the coolent away from the heatercore when your not using it.

Your cable could have come loose from the back side of the selector switch.

 

thanks guys!i have a t-stat and an electrical fan to control the engine's temp but i will check my vacuum lines as of tomorrow,i think that could be the problem because i changed mi intake manifold last winter and i removed lots of things.thank you guys

 

yep sounds like a vacumm problme or the vavle that controls the heater controls are gone. i would almost guess that you t stat is ok. get the vents working properly first and check that diverter valve in the heater hose in line with you heater core. may not be opening.

Jeff

 

thanks,i will check on those things,out of curiosity,is that valve located in the interior of the car or outside in the firewall?.

by the way,thanx to all of you,you've been of GREAT help

 

Nah, heather's not a plant, she's a girl!

Actually, it is a common problem to have air blow out the top of the dash, instead of where we want it to. That is usually caused by a vacuum leak on the back of the sliding heater/air conditioning controls. There are a lot of tubes on the back of that control panel, any one of which can be leaking (and make a hissing sound). Check for that.

However, it sounds like you might have another problem as well. You said that the air is always cold? If so, does the sliding handle to adjust the heater temperature feel the same as it always has? If it feels different, there may be a problem in the cable attached to it and it is not operating the valve over the passenger's feet correctly.

Just some more things to look into...

 

hi guys, i found out what was the problem with my heater.it was a broken pice of plastic that is attached to the temp.slider control, i used 5 minute epoxy and now it works double time as a stove. thanks for your help

 

This made me wonder... does he have vaccuum controlled HVAC? Mine in my 84 was manual... by cables I think.

 

it uses both .you can see the mushroom shaped thing above the heater module.actually the temp.slider is the one tha uses a cable mechanism.:lala: