Meathead Posted October 21, 2011 Report Share Posted October 21, 2011 Hi my car heather has stopped working. It still blows air, and when u switch it to cold it gets colder, but when u switch i to hot it gets to about outside temp and no hotter.... coolant is full... er thats as far as my heather knowledge goes so let the brainstorming begin thanks Link to comment Share on other sites More sharing options...
Vince Noir Posted October 21, 2011 Report Share Posted October 21, 2011 my car heather Fertilizer? Sorry Link to comment Share on other sites More sharing options...
Old Red Celica Posted October 21, 2011 Report Share Posted October 21, 2011 Thermal pants? Probably an Air lock. Link to comment Share on other sites More sharing options...
shocks Posted October 21, 2011 Report Share Posted October 21, 2011 heater matrix given up ? Link to comment Share on other sites More sharing options...
th3iceman Posted October 21, 2011 Report Share Posted October 21, 2011 or the cable in the console has come away so its only blowing cold air... Link to comment Share on other sites More sharing options...
shaungt4 Posted October 21, 2011 Report Share Posted October 21, 2011 Mine was doing this fixed it now it was the small electric box as mine's electronic it opens & shuts the internal door in the heater matrix the 1 that closes in front of the heater core to stop the heat entering the car . i disconected it and opened the door by hand untill i got a replacment box . if yours is a slider cable it could have came disconected or if it's electronic it could be the black electric box on the bottom of the matrix . have you checked the heater pipes to see if you have heat in both pipes the inlet and outlet pipes if 1 is clod it could just well be an airlock in the system and needs bleeding . sorry about any speeling mistakes as you all no its not my strong point lol Link to comment Share on other sites More sharing options...
Meathead Posted October 21, 2011 Author Report Share Posted October 21, 2011 right so i will feel the pipes.. er which ones? how do i bleed it? thru the coolant bottle? mine is electronicaly controlled, could it be as simple as a blown fuse? Link to comment Share on other sites More sharing options...
shaungt4 Posted October 21, 2011 Report Share Posted October 21, 2011 right so i will feel the pipes.. er which ones? how do i bleed it? thru the coolant bottle? mine is electronicaly controlled, could it be as simple as a blown fuse? could well be the fuse, the heater pipes are the 2 pipes that go through the bulkhead into the car heater matrix it's the only 2 rubber hoses that enter through into the car. should be on the pasenger side towards the top of the bulkhead . not sure if you have a bleed screw on 1 of the heater pipes just befor it enters through the bulkhead on the g7 if so you can bleed it through there if not i bleed mine through the rad cap and or exspantion cap Link to comment Share on other sites More sharing options...
Meathead Posted October 21, 2011 Author Report Share Posted October 21, 2011 great advice there and i will try it, just im not too savvy with car terms... er bulkhead? rad cap? expansion cap? now i dont wanna go faffing with the wrong bits so please tell me what to look for in simple terms. now with the pipes you say 1 should be hot or both? and these pipes roughly how thick are they (so i know what im looking for) they about the same size as a hose pipe, or thicker/skinier? Link to comment Share on other sites More sharing options...
Biggy Posted October 21, 2011 Report Share Posted October 21, 2011 Find a gypsy ,i'm sure they could help Link to comment Share on other sites More sharing options...
hyper-wrap Posted October 21, 2011 Report Share Posted October 21, 2011 great advice there and i will try it, just im not too savvy with car terms... er bulkhead? rad cap? expansion cap? now i dont wanna go faffing with the wrong bits so please tell me what to look for in simple terms. now with the pipes you say 1 should be hot or both? and these pipes roughly how thick are they (so i know what im looking for) they about the same size as a hose pipe, or thicker/skinier? Bulkheads the bit between the engine and you...so the firewall...the bit at the back of the engine bay the rad cap is the radiator cap...at the front of the engine, it's basically a lid bit you can unscrew expansion cap...dunno, let someone else fill you in on that! The pipes are the only ones going into the bulkhead. lemme see if I can get a pic and edit it to make it easier for you Link to comment Share on other sites More sharing options...
Meathead Posted October 21, 2011 Author Report Share Posted October 21, 2011 excellent, i will go and have a play as soon as i know what an expansion cap is. thanks Link to comment Share on other sites More sharing options...
hyper-wrap Posted October 21, 2011 Report Share Posted October 21, 2011 here you go, enlarge it by clicking on it...I think the pipe I've indicated (the blue line literally ends on it as it's obscured in the pic) is the one they're talking about? I think the expansion tank cap thingy might be the one directly to the right of the rad cap, white tube with a black lid on it. I stand to be corrected though as I'm unsure, but kinda makes sense seeing as that's where all the cooling stuff is located! Link to comment Share on other sites More sharing options...
shaungt4 Posted October 21, 2011 Report Share Posted October 21, 2011 (edited) here you go, enlarge it by clicking on it...I think the pipe I've indicated (the blue line literally ends on it as it's obscured in the pic) is the one they're talking about? I think the expansion tank cap thingy might be the one directly to the right of the rad cap, white tube with a black lid on it. I stand to be corrected though as I'm unsure, but kinda makes sense seeing as that's where all the cooling stuff is located! that's rite that's the 1. the heater pipes are the 2 pipes just to the left of where you have them marked Edited October 21, 2011 by shaungtr Link to comment Share on other sites More sharing options...
Meathead Posted October 21, 2011 Author Report Share Posted October 21, 2011 right so i checked fuses, none blown. i then felt these hoses: another angle and both got hot, but no heat from vents, so what next? (i prdict the whole dash is gonna be coming out isnt it...) Link to comment Share on other sites More sharing options...
armoredfist2002 Posted October 21, 2011 Report Share Posted October 21, 2011 something to check, as said above find out if it's the door that covers the matrix when I changed my led's in my climate unit, i noticed when the keys were in the ignition and the dash lights were on (second position on the ignition) if you turn the heater knob from hot to cold you can hear a whirring noise, this will be the door opening and closing, but turn the fan off otherwise you won't hear it Link to comment Share on other sites More sharing options...
Meathead Posted October 21, 2011 Author Report Share Posted October 21, 2011 just went out and ried the above, i can hear the little door open and close so thats not the problem. so it would appear that my heater tries to change between hot and cold but isnt producing hot air, so im guessing the matrix is either blocked or nackered. how do i get to it? (dash off, i hope not as it is a big pain in the ass and a lot of work!) Link to comment Share on other sites More sharing options...
shaungt4 Posted October 21, 2011 Report Share Posted October 21, 2011 sorry to say but it will be dash out job to change the matrix . befor you do that if it's not leaking try flushing it through . take the 2 pipes off in the engine bay that go to the heater the 2 you tested for heat . flush the matrix through use a hose pipe. flush it through untill it runs clear . done my matrix about a month ago and what a pain in the butt it was to taking the dash out . not an hard job just a long frustrating job with alot of blue air at times . Link to comment Share on other sites More sharing options...
devnet Posted October 21, 2011 Report Share Posted October 21, 2011 did it just go like that or has it been like this when you had the car??? Link to comment Share on other sites More sharing options...
Meathead Posted October 22, 2011 Author Report Share Posted October 22, 2011 im sure it has just gone like it, surely i would have used the heat since april... anyways, i will try the fluching idea, sounds like it should work. i have one question though, before i do it will i have to drain all the coolant first? i hope not as its more faffing and takes a while to get all the air out when filling it. Link to comment Share on other sites More sharing options...
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