The other day I put my truck in park and it started to slowly roll, and while it did made a clicking noise from underneath, till it finally caught and stopped. About the same time, it would only start if I put the selector on N. This problem is not every time I start it maybe 30% of the time. It had been a few days since the rolling in park incident, but today I put the truck in part, it started rolling, again making a grinding noise, but it never stopped rolling. Had to use the E brake to get it to stay in place. On my drive home I turned the radio off and everything sounds good when shifting gears. If I have to start the truck with the selector in N no big deal, if I have to start using the E brake no big deal. But is this the start of some bigger transmission problem? My knowledge of vehicles only allows me to check the transmission fluid, and it was within the cross hatched lines.
Truck is a 98 F-150, 6 cylinder, 60K miles. Not sure if I want to start putting large sums of money in this thing or consider an upgrade.
Thanks for any help or advice anyone can give.