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Throttling rough and sluggish when 7 degF 900

posted by  spdsk8r on  Thu Feb 13 16:48 CST 2003
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last visit: Mon Sep 22 03:44 CST 2014
[RELATED]

My '93 940 runs starts and runs rough when the outside temp is around 7 degF and below. It continues to run rough at low load and will stall at stops even after it has warmed up. Once I can get the engine loaded it will excel fine. Cruising along at 40-50 mph on a flat or slightly down slope, the engine bobbles.

At the same time, I noticed that my crackcase pressure was very positive (oil was seeping out from under the filler cap). Finding info/advice here, I went ahead and replaced all the crankcase ventilation system components. They were in need of replacement with 170K mile on the girl. I figured the situations were related. However, the 5 degF temp this AM proved me wrong...the problem was back! Ugh! What should I check next.

Thanks,
Marty





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