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The mkiv Supra Owners Club

Rather irritating problems.


TheTurtleshead

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Right, couple of things that are doing my head in;

 

-Car dies when slowing to stop at junctions and clutching in. It is an instant death, doesnt splutter or cough. Only occurs when slowing from a decent speed. i.e. 40 or 50 and above. I have tried a different Idle Control Valve, and have cleaned it and its housing out thoroughly. I have also performed the 'Brake Cleaner' test around all of the engine vacuum pipes, and inspected them thoroughly. And I appear not to have any vacuum leaks. Car also starts up again straight away after it dies, and after restarting it will happily idle and move forward in traffic happily. ICV appears to work as when starting from cold it hold the revs high an brings them down slowly to an even idle.

 

- Second issue is that after car has warmed up I have a nice hot heater for a few miles. Then suddenly the heater will go cold and refuse to produce hot air. The heater matrix was changed for a brand new oem one only a few months ago, and was fine for ages, until it just started doing this.

 

If anyone can shed some light on either of these I would be eternally grateful, as im currently at a loss! Cheers. :)

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The Rad cap may be a little suspect. Could air be entering the system through there and findin its way to the highest point in the system, I.E. The matrix pipes that way?

The car is a jap import and was delimited when I bought it, where abouts would the delimiter be located? I could try removing it and see I suppose :) Any news on that TT Auto LSD mate?

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  • 1 month later...
  • 2 weeks later...

what u explained in ur post is the same thing thats going on with mine,

i sent mine to garage and we decided to change the o2 sensor

all was fine on way home and then 3 days later ,i had still not cut out once

then the supra kept doing the same dam thing,

plus my heating comes and goes as well

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