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44 Posts
Discussion Starter #1
When I start my SC after it's been sitting, like all night or all day, if I don't blip the gas pedal once, it idles very roughly. And it will idle with a bad case of the shakes until I blip the gas once. If I hit the gas pedal once, just a blip, before I turn the key or as I turn the key, it starts and idles fine. What the heck is going on?


1990 5 speed Super Coupe
K&N conical air filter in fender well
Borla stainless steel exhaust
Tokico Shocks
1.5” drop Eibach springs
Competition Limited headlamp harness
Under drive accessory pulleys
Overdrive supercharger pulley

1997 4.6 LX - Sports Suspension Package
Stock wheels, Goodyear Eagle 225/60/16 RS-A tires
Stock Traction-Lok axle, 3:27 gears
Leather, sunroof, electric antenna
Air Silencer removed, K&N air filter
Third cat removed, Magnaflow mufflers
1.25 rear Addco bar
Hayden transmission cooler
Competition Limited headlamp harness with 80/100 bulbs
1st Generation Jerry (Inject-Tech) Chip
KDC-X859 Kenwood Excelon head – Sirius ready with CD/MP 3 player
2 – 5 x 7 Boston Acoustics Rally speakers in front
2 – 5 x 7 Kenwood Excelon Speakers in back
265 watt Phoenix Gold amp
10 CD Kenwood changer

859 Posts
Sounds like a sticky or bad IAC. It is located on the side of your TB.

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