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The mkiv Supra Owners Club

Another heater problem


jon_dragon

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Earlier this year I suffered a blown head gasget :( I got the engine swapped but the heater matrix was full of gunk so I changed it for one I got off ebay *BIG MISTAKE* Turns out the cheap ebay ones dont fit :rolleyes: (didnt see that coming) as a result when I took the car for a quick test run, one of the clips holding the plumbing onto the matrix had failed causing a massive coolant leak all over the passenger (sorry Jason) and the heater box. Ive since replaced the old matrix after a good clean out and the heaters now blow out warm air when the engine is warm as you would expect but only when Im moving! I cant control the heater at all, its always on warm but the illumination works on the controls however the lights that indicate what setting Im on do not. Ive replaced the heater control box above the stereo and the actual controls and also a little white box below the actual heater. The only thing left to change is the heater its self! Before I embark on taking the dash off again I wondered if anyone else has had the same problem and if changing the heater worked or if theres a much simpler fix. Another member I work with mentioned a switch or something on the top of the heater?

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Ah good find and thanks but thats not the issue. I cant control the heater at all. Cant turn it on or change the temperature. If you turn yours off then thats prety much what mines like all the time, even when I turn the knobs. Ive replaced the control unit and the control panel but still no joy

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Ah yeah, thats what you can see when you take the top glove box out isnt it? Theres another one to the left that opens a hatch that lets you see right into the heart of the heater.

@ the Steves - Ive pushed my rod fully in now but its still not doing anything. (is anyone else counting the inuendos in this thread?) I think Im going to have to fully replace the heater to make this work again :-(

When the ebay matrix leaked there was water all over the place! Could have easily shorted something out. Ive checked all the fuses and theyre fine.

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