Pulsing Idle Disappears when Idle Air Control Valve is Disconnected

2knob · 04-19-2008, 11:54 AM

Thanks Chuck, you should be a motivational speaker. You motivated me to send for your tuning notes.

Throttle Adjusting Screw = TAS... Just goes to show that you learn something new every day, even when you don't want to...

I reinstalled the stock computer on the cold engine. When I started it, it raced to about 3000 RPM, but settled to 1500 RPM after a quick blip of the throttle. After it warmed up, it's idling at 1100 RPM (no pulsing), with the TAS fully backed out.

Does this mean there is a small leak around the throttle plates, or will it pull that much air through the Air Adjusting Screw?

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04-19-2008, 11:54 AM	#12
2knob The Newbie Join Date: Feb 2008 Location: Bay Area, CA Posts: 18 Rep Power: 0	Thanks Chuck, you should be a motivational speaker. You motivated me to send for your tuning notes. Throttle Adjusting Screw = TAS... Just goes to show that you learn something new every day, even when you don't want to... I reinstalled the stock computer on the cold engine. When I started it, it raced to about 3000 RPM, but settled to 1500 RPM after a quick blip of the throttle. After it warmed up, it's idling at 1100 RPM (no pulsing), with the TAS fully backed out. Does this mean there is a small leak around the throttle plates, or will it pull that much air through the Air Adjusting Screw?