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This is a common symptom...
Posted by Robert Davis (more from Robert Davis) on Fri, 25 May 2001 13:56:08
In Reply to: 95 Aero intermittently almost stalls when stopping, Sean, Fri, 25 May 2001 00:35:39
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...for a faulty hooter (air bypass valve) valve, located to the right and below the upper radiator hose. It has three hoses connected to it: one small vacuum line, one large hose going to the pressurized (metal) intake tube, and another to the unpressurized tube just down-wind of the air filter.
A symptom of a bad valve is frequent stalling or stumbling after accelerating in any gear and abruptly letting off the throttle when in neutral. When a vacuum is applied to the small hose there should be no release or leakage. If it does, you have a bad diaphragm in the hooter valve.
It could also be the AIC valve, but I doubt it, as that would likely show up when idling as well.
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