Homer Posted November 19, 2008 Share Posted November 19, 2008 There's no heat coming into the cabin even with the heater on full. One of the hoses going to the heater matrix is very hot, the other one cold. The engine coolant was only put in today so could this be an air lock? The engine water temp is also sitting a little higher than on the last supra, about 2/3rds of the way up the gauge instead of in the middle. Any ideas? Quote Link to comment Share on other sites More sharing options...
Dave17 Posted November 19, 2008 Share Posted November 19, 2008 I'd go for air lock matey! Quote Link to comment Share on other sites More sharing options...
Homer Posted November 19, 2008 Author Share Posted November 19, 2008 I'd go for air lock matey! How would I go about removing said airlock? Quote Link to comment Share on other sites More sharing options...
Dave17 Posted November 19, 2008 Share Posted November 19, 2008 (edited) Here we go Homer, i knew i'd read a post on this, its for an NA but I think the process is effectively the same: http://www.mkivsupra.net/vbb/showthread.php?t=167977&highlight=heater+matrix+airlock Also: http://www.mkivsupra.net/vbb/showthread.php?t=154729&highlight=heater+hot Edited November 19, 2008 by Dave17 Found more for you (see edit history) Quote Link to comment Share on other sites More sharing options...
Homer Posted November 19, 2008 Author Share Posted November 19, 2008 Thanks mate, perfect! Quote Link to comment Share on other sites More sharing options...
Paul372 Posted November 19, 2008 Share Posted November 19, 2008 if that dont work it could be your thermostat Quote Link to comment Share on other sites More sharing options...
Havard Posted November 19, 2008 Share Posted November 19, 2008 Darryl, try to fill the system up from the rear of the engine where the pipes are at the highest point...... I have a valve fitted to mine now and I have never had any problems since...... H. Quote Link to comment Share on other sites More sharing options...
SteveR Posted November 19, 2008 Share Posted November 19, 2008 Have you tried running the engine for a while? Quote Link to comment Share on other sites More sharing options...
Homer Posted November 19, 2008 Author Share Posted November 19, 2008 Darryl, try to fill the system up from the rear of the engine where the pipes are at the highest point...... I have a valve fitted to mine now and I have never had any problems since...... H. Yeah, that's what I was thinking at first, but if there's an air lock in the matrix it's not going to work is it? Have you tried running the engine for a while? Cheers Steve, you're on the ball as always Quote Link to comment Share on other sites More sharing options...
Havard Posted November 19, 2008 Share Posted November 19, 2008 Yeah, that's what I was thinking at first, but if there's an air lock in the matrix it's not going to work is it? Hmm, not sure of the layout of the pipework etc. If you fill the system slowly then I don't see why not. I had problems for months but I also had a small leak, got the leak sorted and then filled the syste slowly and topped it up from the back...... H. Quote Link to comment Share on other sites More sharing options...
SteveR Posted November 19, 2008 Share Posted November 19, 2008 Cheers Steve, you're on the ball as always Always happy to help mate Quote Link to comment Share on other sites More sharing options...
DannoSupra Posted November 19, 2008 Share Posted November 19, 2008 Also leave the cap off for a few hrs after its turned off so the air can escape! If not, get a pressure bleeder, but you do need an airline, it sucks everything out, holds it at Vacuum, and just open the valve and she fills up as required! They're not expensive Quote Link to comment Share on other sites More sharing options...
tDR Posted November 20, 2008 Share Posted November 20, 2008 I had some weird problems with mine after fitting the Fluidyne radiator with my Dad - we found the best thing to do was take the top rad hose off at the radiator end and top up the coolant there whilst holding that hose up high to get sufficient coolant straight into the engine. Cheers, Brian. Quote Link to comment Share on other sites More sharing options...
Homer Posted November 20, 2008 Author Share Posted November 20, 2008 I had some weird problems with mine after fitting the Fluidyne radiator with my Dad - we found the best thing to do was take the top rad hose off at the radiator end and top up the coolant there whilst holding that hose up high to get sufficient coolant straight into the engine. Cheers, Brian. Thats exactly what I did Bri, but as the entire system was empty I think it's not filled the matrix. Quote Link to comment Share on other sites More sharing options...
tDR Posted November 20, 2008 Share Posted November 20, 2008 Thats exactly what I did Bri, but as the entire system was empty I think it's not filled the matrix. Have you tried the trick of having the engine running with the rad cap off, then pump the 2x pipes that go through the bulkhead to the matrix at the rubber parts using your thumb and fingers - if there's air in the system you should see it bubble at the rad cap as you pump those hoses... keep doing it 'til it doesn't bubble anymore. Quote Link to comment Share on other sites More sharing options...
Steve Posted November 20, 2008 Share Posted November 20, 2008 Have you tried the trick of having the engine running with the rad cap off, then pump the 2x pipes that go through the bulkhead to the matrix at the rubber parts using your thumb and fingers - if there's air in the system you should see it bubble at the rad cap as you pump those hoses... keep doing it 'til it doesn't bubble anymore. I always do that, obviously with the heater on full heat. Works everytime Quote Link to comment Share on other sites More sharing options...
DannoSupra Posted November 20, 2008 Share Posted November 20, 2008 ^ yeah HOT ^ fergot to say that Quote Link to comment Share on other sites More sharing options...
SUPRALOOPY Posted November 20, 2008 Share Posted November 20, 2008 Just jack the front up mate. Sorry if this has been said..LOL Quote Link to comment Share on other sites More sharing options...
Homer Posted November 21, 2008 Author Share Posted November 21, 2008 Still not solved Removed the return pipe on the heater matrix but it was already full of water. Added about 200ml of fluid to the other side so there was a bit of a air lock in there... Have you tried the trick of having the engine running with the rad cap off, then pump the 2x pipes that go through the bulkhead to the matrix at the rubber parts using your thumb and fingers - if there's air in the system you should see it bubble at the rad cap as you pump those hoses... keep doing it 'til it doesn't bubble anymore. Tried this, the water level was going up and down when pinching the pipe, but no air bubbles Just jack the front up mate. Sorry if this has been said..LOL Good idea dave, will give that a try. Quote Link to comment Share on other sites More sharing options...
Andy Blyth Posted November 21, 2008 Share Posted November 21, 2008 (edited) Still not solved Have you taken the car for a drive yet? When I flushed my coolant I found that I needed to have the engine idling above 3000 rpm for a while with the heater on full before the coolant made it to the heater matrix. I reckon if you took your car round the block a few times, keeping it in a low gear it should fix itself. Don't forget to top up when the engine has cooled down. Edited November 21, 2008 by Andy Blyth (see edit history) Quote Link to comment Share on other sites More sharing options...
Homer Posted November 21, 2008 Author Share Posted November 21, 2008 Have you taken the car for a drive yet? When I flushed my coolant I found that I needed to have the engine idling above 3000 rpm for a while with the heater on full before the coolant made it to the heater matrix. I reckon if you took your car round the block a few times, keeping it in a low gear it should fix itself. Don't forget to top up when the engine has cooled down. It's got no tax, insurance or MOT yet, so a drive is out of the question Quote Link to comment Share on other sites More sharing options...
SUPRALOOPY Posted November 22, 2008 Share Posted November 22, 2008 Just make sure you jack it up high. Then gravity will be your freind. It worked on Chris's car ;-) Quote Link to comment Share on other sites More sharing options...
Homer Posted November 29, 2008 Author Share Posted November 29, 2008 Still not fixed The original problem remains: - No heat to the cabin - There's no leaks - Rad is getting hot - Engine temp is getting too high - Feed to the matrix is very hot, return is cold When removing the return hose it was full of rusty water, not the fresh coolant thats filled the rest of the system. Is there any way to pressurise the water system to "force" flow through the system and get rid of any locks? I think the problem is in the matrix since the feed is hot and the return cold, how can this be flushed out? I'm thinking of rigging up a hose pipe to the feed to see what comes out the return.. bad idea? Quote Link to comment Share on other sites More sharing options...
Steve Posted November 29, 2008 Share Posted November 29, 2008 Have you tried connecting a hose pipe to one side of the heater matrix and a bit of hose on the other side and let water run through it for a few minutes to see if it clears? Quote Link to comment Share on other sites More sharing options...
Homer Posted November 29, 2008 Author Share Posted November 29, 2008 Have you tried connecting a hose pipe to one side of the heater matrix and a bit of hose on the other side and let water run through it for a few minutes to see if it clears? Not tried that yet, but it was one of thoughts I had. Is there any risk of busting the matrix forcing water through like that? Quote Link to comment Share on other sites More sharing options...
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