You have three splash guards under the front of your car, or my 02 celi w/ TRD
I had the same problem your having saggy plasitc, when your oil is changed you have to remove the center of the three peices...
The right and left peices are connected to the finder wells.
If it is the plastic in the middle of the car but towards the passenger side, directly under the oil pan and plug.
(the smallest peice) You should be able to replace the "poppers", that hold it in place and you will be fine.
Good luck, sorry if I confused you... [ 05-23-2003, 03:11 PM: Message edited by: redracer ]