ok i got my water pump and timing belt replaced last week and now the idle is bad when i stop at a red light or stop sign it idles at like 500 rpms and feels like it wants to stall out but if i put the AC on it idles at 1000 rpms. i brought it back to the shop and they turned the distributor alittle and it fix the problem for like a day now back to square one they says its the timing belt breaking in so they will have to keep turn the distributor but i dont know if thats a good thing to do.... please any input would be good