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hissing console and rough idle 200 1991

posted by  someone claiming to be chris herbst on  Tue Dec 5 15:27 CST 2000 [RELATED]

This is a weird one. My car always has the weird problems. This time, every time I step on the gas, I get a "shhhhhhhhhhhhhhhhhh" noise from the console for two or three seconds.

Not coincidentally, the car is really sluggish during that period. When the hissing stops, it goes back to normal. I only get a hissing sound when I've been off of the gas, then get back on it again (accompanied by low power). Also the idle drops off sharply to less than 500 sometimes.

This is obviously a vac problem in the console. I couldn't trace it to any hoses, though. It sounds really hollow, like on the inside of a tin can or something. Is there an accumulator in there? And it does sound like it is right in the center of the console somewhere, rather than behind the cluster or the glovebox where the bellows are for the side vents and the defrost. It doesn't continue if I push one of the controls either. It is just a momentary thing when I step on the gas.

So... any suggestions? I haven't been inside a 240 console for the HVAC in five years (hopefully the last blower motor I ever do).





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