RepairPal Certified shops can diagnose and repair your 1998 Toyota Camry. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
High possibility you have a broken transmission speed sensor. This is what it looks like : http://www.autozone.com/engine-management/vehicle-transmission-speed-sensor/toyota/camry/1998/4-cylinders-g-2-2l-efi-dohc?filterByKeyWord=transmission+speed+sensor&fromString=search
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High possibility you have a broken transmission speed sensor. This is what it looks like : http://www.autozone.com/engine-management/vehicle-transmission-speed-sensor/toyota/camry/1998/4-cylinders-g-2-2l-efi-dohc?filterByKeyWord=transmission+speed+sensor&fromString=search