Spitandpolish Posted July 17, 2016 Share Posted July 17, 2016 Hi All The car starts easily, and will rev smoothly through the range, immediately you back off the throttle,it just dies i.e. won't idle at all. Previous owner advised this was a recent development, but the car had been in storage for a few years, last MOT was 2011 and the fuel tank contained only fumes. Fresh fuel and a check of all hoses etc replacing a couple that were perished - same fault. The car has been serviced with new oil and filter, new air filter and while I have not had the plugs out, they also look very fresh. Any ideas gratefully received... Quote Link to comment Share on other sites More sharing options...
Manta78 Posted July 17, 2016 Share Posted July 17, 2016 Turn up the idle screw and hopefully that may be able to stop the car from getting too low of revs to stall. 1 Quote Link to comment Share on other sites More sharing options...
andyc Posted July 19, 2016 Share Posted July 19, 2016 If this is an injection model and has been standing it could well be the idle control valve is stuck. Take it off and give it a good wash out with carb cleaner and see if that helps Andy Quote Link to comment Share on other sites More sharing options...
Spitandpolish Posted July 19, 2016 Author Share Posted July 19, 2016 45 minutes ago, andyc said: If this is an injection model and has been standing it could well be the idle control valve is stuck. Take it off and give it a good wash out with carb cleaner and see if that helps Andy Thanks Andy, I have discovered lots of oil and carbon in the inlet to the throttle body, and have ordered some carb cleaner to get it sorted. As soon as I can identify the idle control valve, I will clean that too! Mark Quote Link to comment Share on other sites More sharing options...
andyc Posted July 20, 2016 Share Posted July 20, 2016 (edited) Edited July 20, 2016 by andyc Idle valve is the alloy disc with the two pipes next to the rocker cover 1 Quote Link to comment Share on other sites More sharing options...
mantasrme Posted July 20, 2016 Share Posted July 20, 2016 Also have a good look for splits in the pipe from filter to manifold as this can give similar problems 1 Quote Link to comment Share on other sites More sharing options...
Spitandpolish Posted July 23, 2016 Author Share Posted July 23, 2016 Many thanks to everyone who replied to this topic. I have managed to get the idle control valve off, it is 90% closed when cold and does not move when 12 volts applied to it. Does anyone know where I can get a replacement? Quote Link to comment Share on other sites More sharing options...
mantasrme Posted July 24, 2016 Share Posted July 24, 2016 Its a slow moving valve, if you stick 12v up it you still need to wait 5 mins or so to see it move. The little gap you see is a disc that rotates to change the size of the gap. If i remember rightly its operated by a bi-metalic coil that unwinds slowly as it gets warm from voltage flowing through it (similar to the old auto choke on carbs) Quote Link to comment Share on other sites More sharing options...
Spitandpolish Posted July 24, 2016 Author Share Posted July 24, 2016 Thanks, will try that now, but should it not be open when cold anyway? Quote Link to comment Share on other sites More sharing options...
mantasrme Posted July 25, 2016 Share Posted July 25, 2016 90% closed is the fully open position, then when its warm it moves to fully closed. It is not supposed to open to the full pipe size. It isn't like a more modern idle control valve that can move quickly open/closed by ecu control on a closed loop to the throttle and engine revs, its just a slow moving auxiliary air valve for bleeding air in for the first few minutes of the engine running to ballance out the idle until everything is warm. Quote Link to comment Share on other sites More sharing options...
Spitandpolish Posted July 25, 2016 Author Share Posted July 25, 2016 Thanks - this is very helpful - will keep plugging away... Quote Link to comment Share on other sites More sharing options...
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