Lumpy idle when hot!!

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Lumpy idle when hot!!

Post by ozscim » Thu Nov 23, 2017 9:41 am

Hi All,
Has anyone any thoughts on my problem?
When hot, my 79 SE6A auto becomes very erratic on idle, ie when I pull up at traffic lights and have to sit for a few minutes,the idle will become more and more erratic until the engine dies.
It will instantly start when I select neutral or park, and will happily sit there idling at 750-800rpm forever, until I select drive, also when I pull away it miss fires for about the first 200mtrs.
It is not overheating, even though temps over here are hitting 32-38c, and it started displaying this problem during our winter.
The only thought I have, is some how the drive train is putting excess load on the engine, when the car is stationary and in drive.
All thoughts very welcome,
Thanks Neil

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