Originally posted by PowerEclipses
i dont know why you think its your speed sensor, thats just for your mph, mine doesnt work and if it doesnt work your speedo wont work either... it sounds like your running to rich, do you have cams?

It idles at 750 normally, but if I try to put the clutch in after a hard turn or hard brake it will de-rev all the way to 400rpms or so for a second. I dont have cams, or fuel upgrades of any sort. Vfaq said that if it happens after turns like it is to me, then the speed sensor is not sending the information to the ECU that the car is still moving and doesnt provide enough idle vacuum for power brakes and power steering.