catfish man Posted December 14, 2009 Share Posted December 14, 2009 well the big freeze is here and my matrix is still not working ive flushed it out with the help of dude(good bloke:)) fitted a new thermosat:) got all air locks out of engine:) put in antifreeze and still no hot air:( the 2 pipes on matrix are hot (top and bottom) could the temp dial be a problem/faulty? last chance? before i find some one to re-fitt a new matrix:taped: Quote Link to comment Share on other sites More sharing options...
Ric Posted December 14, 2009 Share Posted December 14, 2009 i had this problem exact same symptoms, my solution was a new temp/dial unit box thing Quote Link to comment Share on other sites More sharing options...
jevansio Posted December 14, 2009 Share Posted December 14, 2009 Take a weekend out & do it yourself, there's a free matrix here for you, it shouldn't cost you a penny Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 14, 2009 Share Posted December 14, 2009 i had this problem exact same symptoms, my solution was a new temp/dial unit box thing Is there a way of testing this unit ? Quote Link to comment Share on other sites More sharing options...
catfish man Posted December 14, 2009 Author Share Posted December 14, 2009 dont know if you can test the dial , few members have told me they think the matrix is fine due to both pipes been hot? Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted December 14, 2009 Share Posted December 14, 2009 Why did AFR not diagnose the problem, especially after spending so much time changing items etc, I trust you paid for the work, I would have wanted it fixed or the problem found if I was getting a garage to work on it Quote Link to comment Share on other sites More sharing options...
SupraShaun Posted December 14, 2009 Share Posted December 14, 2009 As Ric said, replace the heater controls. That solved my "cold heater" problem. Quote Link to comment Share on other sites More sharing options...
catfish man Posted December 14, 2009 Author Share Posted December 14, 2009 Why did AFR not diagnose the problem, especially after spending so much time changing items etc, I trust you paid for the work, I would have wanted it fixed or the problem found if I was getting a garage to work on it no just AFR talked me step by step over the phone had no time to get down to them due to work wont be untill after xmas when i can get down to AFR changed items myself in little time i have free:( Quote Link to comment Share on other sites More sharing options...
catfish man Posted December 14, 2009 Author Share Posted December 14, 2009 As Ric said, replace the heater controls. That solved my "cold heater" problem. on looking for one right now:) Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 14, 2009 Share Posted December 14, 2009 My temp dial moves the arm its supposed to in the pic attached, all the other functions work on the heater controls for changing the airflow direction but still have a luke warm heater, ive been bleeding the damn thing for over 2 hours today to get luke warm air out of it. Quote Link to comment Share on other sites More sharing options...
SteveC Posted December 14, 2009 Share Posted December 14, 2009 The arm in the picture above controls the air mixing flap. Have you also checked the other end of it? (viewed from the left dash panel - when removed). IIRC, the top side of it controls the water valve. Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 14, 2009 Share Posted December 14, 2009 Behind this panel, i'll have a look tomorrow Quote Link to comment Share on other sites More sharing options...
SteveC Posted December 14, 2009 Share Posted December 14, 2009 Yes that's right - the panel around the radio. Just take it off and look at the top of the heater unit. When you alter the temp setting, the arm and mechanism should move. There's always the possibility that it could have become un-clipped There's a rod from that arm that connects through the heater unit down to the air mixing arm in the first photo. If either one is un-clipped, then the heater won't work correctly. Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 14, 2009 Share Posted December 14, 2009 Yes that's right - the panel around the radio. Just take it off and look at the top of the heater unit. When you alter the temp setting, the arm and mechanism should move. There's always the possibility that it could have become un-clipped There's a rod from that arm that connects through the heater unit down to the air mixing arm in the first photo. If either one is un-clipped, then the heater won't work correctly. Cheers Steve Quote Link to comment Share on other sites More sharing options...
catfish man Posted December 14, 2009 Author Share Posted December 14, 2009 Cheers Stevei 2nd that cheers will have a look:) Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 15, 2009 Share Posted December 15, 2009 Took all the dash surrounds off and from what i can see the heater control is all working correctly. Arrowed in the pics Quote Link to comment Share on other sites More sharing options...
catfish man Posted December 15, 2009 Author Share Posted December 15, 2009 does the heater control dial just move the air control flap things or does it also work a temp sensor? ? hmm:search: Quote Link to comment Share on other sites More sharing options...
SteveC Posted December 15, 2009 Share Posted December 15, 2009 It's a good few years since I looked at that part of the the heater, but those photos look correct. I haven't access to my main PC at the moment to look, but somewhere in the Toyota workshop manual (downloadable on this site somewhere) it tells you the range the lever should move through. From memory, I thinks it's something like 100° - 110° of movement. Quote Link to comment Share on other sites More sharing options...
SteveC Posted December 15, 2009 Share Posted December 15, 2009 does the heater control dial just move the air control flap things or does it also work a temp sensor? ? hmm:search: When you turn the temp control, both of the lever arms above and below the heater unit should move - but it does of course depend on the ambient cabin temp at the time. To test the movement, turn the temp control from one extreme to the other. Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 15, 2009 Share Posted December 15, 2009 Both the arms move on mine and looks like over 90 degrees of rotation, i shall be having another bleeding session tomorrow and see what happens. Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 22, 2009 Share Posted December 22, 2009 (edited) I've now cured my heater problem, i popped up to see Ibrar and put his lazer heat checking gun on the pipes and right down at the bulkhead one was 25 degrees lower than the other. Ibrar had a look at his n/a and the pipes in and out of the matrix were on the opposite way round to mine. I took the car back to my workshop and swapped the pipes over, after 3/4's of an hour of bleeding i was about to give up as still no heat from the heater, i raised the tickover for the last time trying to coax any air out the system and then let it drop. The level in the rad then dropped by quite a bit so i topped up the rad and checked the outlet on the matrix and its now as hot as the otherside, checked in the car and my heater is now as it was Edited December 22, 2009 by Dnk (see edit history) Quote Link to comment Share on other sites More sharing options...
stevie_b Posted December 22, 2009 Share Posted December 22, 2009 Thanks for posting your solution Dnk. I haven't got round to trying any of the possible solutions discussed in this thread, but I doubt my cause is the same as yours. Quote Link to comment Share on other sites More sharing options...
SteveC Posted December 22, 2009 Share Posted December 22, 2009 ...checked in the car and my heater is now as it was That's good news. Christmas has come early for you then! Quote Link to comment Share on other sites More sharing options...
Dnk Posted December 22, 2009 Share Posted December 22, 2009 Thanks for posting your solution Dnk. I haven't got round to trying any of the possible solutions discussed in this thread, but I doubt my cause is the same as yours. I didnt think it could be that either as when i tried before to bleed the system i got warm air through it which i dont understand even now. Worth checking the pipes are on the right way as you never know. That's good news. Christmas has come early for you then! Well it certainly saves all the dash coming out again which i really wasnt looking forward to, the strange part is i cant see when the pipes got crossed over, the matrix was changed in 2006 and im sure it worked ok after that but to be honest i dont care now as its 100 % again Thanks for the help guys, merry xmas Quote Link to comment Share on other sites More sharing options...
stevie_b Posted December 22, 2009 Share Posted December 22, 2009 I didnt think it could be that either as when i tried before to bleed the system i got warm air through it which i dont understand even now. Worth checking the pipes are on the right way as you never know. If you happen to be around your engine bay with a camera in your hand over the next few days, could you take a photo of the offending area please so I can check that mine are on the correct way? Or I could take a photo of mine and post it up here. Quote Link to comment Share on other sites More sharing options...
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