Hi members,

Recently I had problem with my space wagon. Loss of power was the symptoms of the problem. After changing equivalent model ECU, throttle body and new exhaust with catalytic converter, at last problem found in distributor coil. Coil was arching and loosing power. After repaired of distributor, car got power back but she is unstable at idle condition, now she starts revs between 800 and 1000 at idle and occasionally revs drop but engine keep running and revs go back to 800. I suspect there is slightly timing of the distributor is out as well.

I suspect there is vacuum leak cause this problem. Can someone kindly advise me where to look precisely? Personally I think may be gas kit of throttle body or small tiny vacuum pipes at the top of throttle unit cause this problem? It will be nice if some one can give some advice in this matter before I spend any more time and efforts. Your advice will be appreciated.

Just update, after changing spark plug idle problem is not any more. Thanks to those members they gave suggestions and tips.