I depends on engine you have in your car. All timing marks are located on the crankcase pulley, cam pulley and, distributor has timing marks as well. In order to view all timing marks, be sure to have the front bumper removed & timing belt covers removed. In order to turn the crankcase by hand. Have a bottle of whiteout ready to place on timing marks for easy refferance. Always crank your wrench clockwise during timing mark lineup, remove sparkplugs to lose the engines compression. Whatever you do, do not remove the timg belt until you have all refferance marks lined up. At the crankcase, you will notice a permant refferance marker, ture the crankcase until you see a small notch on front of the pully. Once you find it, view the timing marks for the cam pulley. if the notch mark on the pulley don't line up with it's own refferance marker, turn the crankcase till these marks line up together. If they line-up, remove the distributor cap from the distributor and check to see if the rotor button lines-up with the number 1 notch on the car's distributor. If so, it's time to replace the water pump, crankcase seals, camshaft seals and install a new thermostat. Be sure all the pulley are locked into place to keep from moving when installing the new timing belt. To save yourself any headaches, buy a factory manual that has all the torque specs when replacing everything.
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Pontiac Fiero made from 1984-1988
disconnect the battery for 3 hours..also, Everyone should have a manual for their vehicle, and the library should have a professional shop manual available in the reference section(make copies of the right sections) read up and fix it like a PRO! :) good luck
Are you the original owner? If so, the owners manual will tell you in the maintenance schedule section. If this car is equipped with a V6, then 100,000 mi is probably the suggested interval to change the belt.
120/80 mmHg - it can vary but little 120-125/80-90
70-80%