I finally got my stock 86 gt to idle fine but now when I engage the clutch to down shift to turn or simply stop the rpms drop to near 0.I recently had to put a map sensor in to fix a horrible idle problem.I have timeing at 10 and tps is at .98 the car idles at about 700-800 I put the car in second to turn into a parking lot and when i engaged the clutch the rpms dropped I thought it was going to cut off.Then when I give it a few seconds with the clutch still engaged the rpms retun to 700-800.