Jake Posted February 12, 2008 Share Posted February 12, 2008 It's a nice sunny day so I thought I'd have a look at my heater matrix to see where the leak is. I'm following Jez's How To thread I've got all the dash out OK but I can't seem to get the heater box out. In his thread Jez says in post #3 : "Now, unbolt the heater box, 4 12mm bolts on top edge, and 3 10mm bolts in footwells..." but I can only find 3x 12mm bolts across the top. The ones I can see are the two in this pic and another one on the driver's side. Anyone know where the last one is? Thanks Quote Link to comment Share on other sites More sharing options...
Jake Posted February 12, 2008 Author Share Posted February 12, 2008 Ah, hang on! Having read Jez's thread again, do I have to undo the under-bonnet bits before the heater box will come out? I was thinking the heater box could come out before you had to do that. Anyone know? Quote Link to comment Share on other sites More sharing options...
steb9780 Posted February 12, 2008 Share Posted February 12, 2008 Do you not need to undo coolant pipes in the engine bay for it to pull out on the inside?? Quote Link to comment Share on other sites More sharing options...
steb9780 Posted February 12, 2008 Share Posted February 12, 2008 Do you not need to undo coolant pipes in the engine bay for it to pull out on the inside?? Looking at the guide that's what it seems to be saying along with the 2 x 10mm bolts. Quote Link to comment Share on other sites More sharing options...
Jake Posted February 12, 2008 Author Share Posted February 12, 2008 I don't know. I thought thought the heater box could be lifted out inside the car leaving the heater matrix and pipes through the bulkhead in place. Maybe not Quote Link to comment Share on other sites More sharing options...
steb9780 Posted February 12, 2008 Share Posted February 12, 2008 A bit further down from the picture of R2D2 air-con draining machine it says this: "Now, onto the aircon pipes. DO NOT do this if you still have aircon gas in the system. Undo the 2 10mm bolts holding in the aircon pipes, quite fiddly if you have abs, the charcoal can can just be moved via undoing its 2 10mm bolts. Once these are undone pop the pipes out of thier sockets, and move onto the 2 10mm bolts holding the surround plate in. Once out the way, go back into the cabin and give the heater box a wiggle. Bobs you're uncle, fannys your aunt, theres the little blighter!!! Undo the 4 x screws holding the long air vent in place on top of the heater box, then undo the clamps on the water pipes and the matrix will just pull out...." To me all that has to be done to get the box out. Well that's my interpretation of it. Quote Link to comment Share on other sites More sharing options...
Jake Posted February 12, 2008 Author Share Posted February 12, 2008 Ah, I bet it's the aircon pipes that are stopping it coming out then. I've undo the two heater pipes under the bonnet and removed that plate but it's still stuck on the passenger side somewhere. I'll go check those AC pipes next. It was the mention of 4x 12mm bolt on the top of the heater box that was confusing me cos there's only 3 and I was convinced it was the one I couldn't find that was the problem. Quote Link to comment Share on other sites More sharing options...
madmunky Posted February 12, 2008 Share Posted February 12, 2008 Yeah you need the aircon pipes disconnected and if you have enough slack on the heater pipes they will pull though, had the same problem doing mine Quote Link to comment Share on other sites More sharing options...
Jake Posted February 12, 2008 Author Share Posted February 12, 2008 Almost there now. AC pipes undone and the heater box is really loose. There's two electrical multiplugs from the fan under the bottom left hand corner of the heater box. I managed to get one unplugged but the other one just won't shift. I've been trying to get it out for 20mins so far but it will not shift. My hands are as sore as hell. Quote Link to comment Share on other sites More sharing options...
steb9780 Posted February 12, 2008 Share Posted February 12, 2008 Almost there now. AC pipes undone and the heater box is really loose. There's two electrical multiplugs from the fan under the bottom left hand corner of the heater box. I managed to get one unplugged but the other one just won't shift. I've been trying to get it out for 20mins so far but it will not shift. My hands are as sore as hell. How did you drain the air-con gas incidentally? Quote Link to comment Share on other sites More sharing options...
JohnnyW Posted February 12, 2008 Share Posted February 12, 2008 Fookin 'ell! Just had a look at the guide, thats some job! I shall now pray to the Supra gods to show mercy on my heater matrix. Quote Link to comment Share on other sites More sharing options...
Whitesupraboy2 Posted February 12, 2008 Share Posted February 12, 2008 Is it a big phat orange plug Jake? Mine got stuck on that too if so. your almost there...good to see. Quote Link to comment Share on other sites More sharing options...
Jake Posted February 12, 2008 Author Share Posted February 12, 2008 How did you drain the air-con gas incidentally? I just undid the pipes and let it piss out into the atmosphere. I know it's a bit naughty but in the scheme of things one more car leaking its AC gas isn't going to hurt. Loads of Supras have already leaked their gas out through old age. Is it a big phat orange plug Jake? Mine got stuck on that too if so. your almost there...good to see. Nah, it was a white one. Anyway I'm there now. The matrix is out and I've found the leak. It's a tiny pinhole, too small to see by eye but pressurising the matrix while submerged in a sinkful of water showed its location easy enough. I called the local Serck's and they can fit a brand new core to it for £68 if I take it down there tomorrow. I'm not looking forward to putting it all back together though! Quote Link to comment Share on other sites More sharing options...
Jezz Posted February 12, 2008 Share Posted February 12, 2008 Does my write up suck? I'm sure I said somewhere about removing the air-con pipes. Quote Link to comment Share on other sites More sharing options...
Jake Posted February 12, 2008 Author Share Posted February 12, 2008 No mate, it's great - I couldn't have done it without your write-up. I found two things different on mine compared to yours, dunno if it's because mine is a newer model. 3 not 4 12mm bolts holding the top of the heater box. 1 not 2 bolts holding the AC pipes in. Quote Link to comment Share on other sites More sharing options...
SteveR Posted February 12, 2008 Share Posted February 12, 2008 So you decided to give it a go Jake Quote Link to comment Share on other sites More sharing options...
Jake Posted February 12, 2008 Author Share Posted February 12, 2008 So you decided to give it a go Jake Yes mate:D I wasn't going to but I got a bit carried away after taking the seats and carpet out so I could clean and dry the carpet (It was soaked with coolant) Quote Link to comment Share on other sites More sharing options...
Jezz Posted February 12, 2008 Share Posted February 12, 2008 No mate, it's great - I couldn't have done it without your write-up. I found two things different on mine compared to yours, dunno if it's because mine is a newer model. 3 not 4 12mm bolts holding the top of the heater box. 1 not 2 bolts holding the AC pipes in. Good stuff, glad it came in usefull. I'm sure there is one bolt on each pipe going into the aircon side of the heater box? Perhaps its a facelift thing. Quote Link to comment Share on other sites More sharing options...
steb9780 Posted February 12, 2008 Share Posted February 12, 2008 I just undid the pipes and let it piss out into the atmosphere. I know it's a bit naughty but in the scheme of things one more car leaking its AC gas isn't going to hurt. Loads of Supras have already leaked their gas out through old age. Yep thought that would be the easiest way. I did the same when I binned the A/C on my rover coupe turbo. Anyway you didn't sign upto the Kyoto agreement, the Government did. Quote Link to comment Share on other sites More sharing options...
SteveR Posted February 12, 2008 Share Posted February 12, 2008 Yes mate:D I wasn't going to but I got a bit carried away after taking the seats and carpet out so I could clean and dry the carpet (It was soaked with coolant) Good lad. Does it still smell of fish (I always think coolant has a slightly fishy smell) or have you given it a good wash! Quote Link to comment Share on other sites More sharing options...
madmunky Posted February 12, 2008 Share Posted February 12, 2008 Good stuff, glad it came in usefull. I'm sure there is one bolt on each pipe going into the aircon side of the heater box? Perhaps its a facelift thing. Mines a Jap spec and had the to bolts for the AC but also only had 3 top bolts holding in the heater unit, very good tutorial though mate found it very had while doing mine. Quote Link to comment Share on other sites More sharing options...
Pete Posted February 12, 2008 Share Posted February 12, 2008 How easy a job have you found this? I've heard from others it's not difficult, just a lot of methodical removal of parts and organisation required. Do you have a red Supra now? Quote Link to comment Share on other sites More sharing options...
Jake Posted February 12, 2008 Author Share Posted February 12, 2008 It's not hard really, just long winded. The worst thing is getting some of the electrical sockets apart. The red car is the one Jez did, I just used the photo from his thread. Quote Link to comment Share on other sites More sharing options...
Pete Posted February 12, 2008 Share Posted February 12, 2008 The red car is the one Jez did, I just used the photo from his thread. Ah! Quote Link to comment Share on other sites More sharing options...
madmunky Posted February 12, 2008 Share Posted February 12, 2008 I would say its pretty easy too my hardest part was the engine bay bits Quote Link to comment Share on other sites More sharing options...
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