i think my TB is bad. i ordered a 70mm today. my Stang CONSTANTLY idles at 1,000 RPM. i have set the base idle (twice now, thanks) and the IAC is clean and timing is dead on at about 12 degrees base. hooked a scanner to it and it shows no problems. my TB does stick a tiny bit at zero throttle. like when you go to give it gas it's stuck a little bit. tried cleaning it, just can't get it to stop sticking. so i'm at the point of admitting defeat and thinking this TB is garbage. hopefully the new TB cures the problem. i put my '86 TB on it and it idles fine, just weaker because of the "straw", lol. how much performance gain do you normally notice out of a 70mm TB? i already have the 70mm spacer plate...previous owner put it on my '86 Mustang and i put it on this one.
thanks for reading my ranting!
Josh
thanks for reading my ranting!
Josh