okay first off.. got an obd1 b18c1.. in an obd2a civic.. so many ploblems.. where to start... -when i first start my car.. at any time of the day.. the rpms jump up and down between 200-800.. until the car warms up then idles at 1200..?? -and when in idle.. sounds to be in the tranny.. it makes a clicking sound when the clutch is not engaged.. but when i engage on the clutch.. the sound goes away.. i changed out the throwout bearing.. but still does the same thing....?? -coolant..... i have to fill my coolant up every other day.. pouring in about a quart each time.. normal driving.. with a/c on or off.. my car starts to overheat.. but only when the car is at idle.. when driving.. the temperature gauge goes back to normal.. when it overheats and the a/c is on.. the a/c air gets warm..?? -when i turn on my a/c.. my idle drops from 1200 to about 200.. thats only when the a/c is turned on..?? -everytime.. in high rpms.. a cloud of smoke comes out from my exhaust pipe.. mainly during vtec.. but also when im high revving for a long time.. like driving and keeping it up at about 5000 for a while.. ??? i think thats all the problems i have.. but as we all know.. its never-ending.. any help on any of these would be much help.. thanks..!!