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Idle stumble when lifting off brakes. 200 1993

posted by  johnboy740 on  Fri Nov 12 07:10 CST 2010
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last visit: Thu Apr 12 13:04 CST 2012
[RELATED]

I recently took over driving the 240 wagon that used to be my wife's daily driver. I've noticed that when lifting off the brake pedal the idle drops a good amount, but then usually recovers fairly quickly. Once or twice, it has actually stalled when I let off the brake. I am going to clean a few things tomorrow. I suspect some kind of relation to engine vacuum. I know the stalling isn't normal, but is the drop in idle typical? Is there some kind of test to check if the booster diaphragm has gone?






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