My CRV - 98 model (Automatic) is giving me trouble.I use vehicle in the morning for 30-40 KM. There is no problem in this session. But when the next session starts after 30-45 minutes trouble will start. I start engine then give accelerator and when I reduce the accelerator engine RPM will be reduced considerably and few times engine stops. Many times I have to travel with this trouble and at traffic signals engine stops. I changed spark-plugs and sparkplug cord. But same problem exists. My local mechanic couldn't trouble shoot, any one can help me out?