That is the funny part, I always keep the idle control valve clean and did clean it again just incase, didn't change anything. I have traced all the vacuum lines, nothing out of place. I was thinking perhaps this might be a problem with the fuel supply?

This symptom can be caused by the airflow plate position sensor. It is a pot (variable resistor) mounted on the passenger side just below the fuel distributor. They wear out and get noisy. This device is used to tell the computer to add fuel when it senses acceleration or movement in the air flow sensor plate. Much like the way carbs used to squirt fuel into the engine when you stepped on the gas.

They used to be available but I think the source has dried up. There are other threads that discuss this device.

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I got too many cars!! Insurance eats me alive. Dave

78 Corvette Stingray - 3k
82 242 Turbo Volvo - Manual - 270k
86 300e 5 speed manual - 210k
87 420sel - 240k
89 560sl - 78k
91 420sel - 205k
91 560sel - 85k
94 GMC Suburban - 90k
97 Harley Davidson Heritage Softail - 25k
00 GMC Silverado 1 ton 30k

I took it apart and cleaned it out, no change at all. I am thinking Fuel Pump may be going? Has anyone had any experience changing it on this type of car?

This thing is electrical it operates as an electro magnet, just cleaning it will only make it look good. Test the pulse settings to see if you are close on electrical flow,if it gets good current, If so and it still will not let it idle at proper speed,Replace it, you can get a used one from another member.JNT

Wait a minute, are you talking about the air mass meter or another part that may be causing the problem? I am starting to think that I was working on the wrong part.