It is located on the rear left side under the trunk hatch.
Inside the trunk on the drivers side behind the carpet.
It is located in the trunk. Look on the right side plastic panel.
The fuel pump relay is under the drivers side of the dash , right by the steering column.
Yes. As I recall, the 88 is carb, the 89 is either carb or F.I., and 90+ are all F.I.
Yes, it is.
On my 1991 fuel injected Festiva the fuel pump inertia switch is located inside the panel at the rear driver's side. Lift the rear hatch and look to the left where the seat belt attaches and the speaker is located. There is supposed to be a small panel (2 or 3 inches square). My panel is missing and there is just an opening. You can see the top of the inertia switch with a red button. If you need to replace it or get to the entire switch you must remove that entire panel. It only takes about 10 minutes to remove that panel.
ford festiva stopped while driving it has fuel and power it just wont turn over
No it is not, You will have to remove the fuel pump relay are fuse. Only ford had a INERTIA switch.
Mounted on top and inside the fuel tank.
Depends on the year, but for a 90' festiva you can get them for $30 on rockauto. this is for a remanufactured part.
with blinker fluid
Here is a picture showing the fuel filter on a 1998 ford festiva trio. It is near the battery. http://img522.imageshack.us/img522/6351festiva1998fuelfilter2yn6.jpg