no heat....its colddddd outside...help!

[fireberd350]

well my heater controls took a crap on me last week.... first the slider got stuck in the DEF position, then the blower eventually started working sparatically. Anyways i got a working used piece and hooked it up, everything works, blows good, goes to the correct location depending on where the slider is at, but theres no heaT? i pulled out the stereo and looked underneath and the temp slider is moving the cable in and out like it is supposed to any ideas, im cooollllldddd!

 

[6pack]

Take a look under your hood.....find your heater hoses and make sure someone before you has not installed a shut-off valve. If you happen to find one turn it the opposite way you find it....then see if you have heat. HTH

 

[redhotrod]

I had a problem with mine a while ago. Ended up being a clogged heater core. I took my garden hose with a good pressure nozzle and sprayed it back and forth until it became unclogged. Its a cheap check.
Another thing to look at is there is a valve behind your turbo that controls the water flow. Its hooked up inline with your heater hoses. Make sure that isn't clogged and flowing ok. A simple way to check that is to simply spray water through it.
Good luck

 

[fireberd350]

The thing is last week it worked fine. The heat was incredible actually, the only thing i touched was the headunit contorl piece. That and I removed the blower motor, but that works fine now! any ideas?

if it means anything this happened during the swap....i had everything disconnected from the broken control unit except the cable that hooks to the temp slider. Well there wasn't much slack so in the process of un hooking it something broke loose and it got some more slack all of the sudden. It appeared to be in the back of the dash and i just thought it was a zip tie or something and thought nothing of it, could that have anything to do with it?

 

[topfuel]

if it means anything this happened during the swap....i had everything disconnected from the broken control unit except the cable that hooks to the temp slider. Well there wasn't much slack so in the process of un hooking it something broke loose and it got some more slack all of the sudden. It appeared to be in the back of the dash and i just thought it was a zip tie or something and thought nothing of it, could that have anything to do with it? [/B][/QUOTE]

Mine broke the little plastic arm where the temp cable connects
to the heater box. You can see it if you drop your glove box down.

 

[fireberd350]

ill check tomorrow....does that mean i have to replace it?

 

[salvageV6]

Move the lever from cold to hot and back again.

You should hear the temp. door make a slight clunk when it opens and closes.

If it don't U have problems.

 

[kuku]

I just closed my garage door after working on the same issue you described.

A little trouble-shooting idea for you is to find your two heater hoses. Turn your car on, heater on and all the way to hot. Let it run for a little while to make sure the car is warm. Feel both the hoses. If one hose is hot and one is cold then the pressure switch is not opening. This is described in a post above with the shut-off valve. If both hoses are hot it means you have system circulation and it could be many things i.e. heater core, blower motor, electrical. If one hose is hot and one is cold then you have blockage and you may need to resort to the garden hose trick listed above to flush the system.

Mine was very simple with the pressure switch not opening. I sprayed it with WD40 and manually pumped it with my hand and it began to work again. There are two vacuum hoses connected to the pressure switch you may want to pull them off and check and see if they are working. If one has vacuum and one does not reverse them and see if the pressure switch opens. This is not a fix just a temporary Band-Aid to get the heater to work again.

I am in no way an expert when it comes to this just giving you some ideas. Good Luck.