If you mean will crank, but no fire, then check for spark and fuel. If you mean will not crank, then check the wiring and the starter.
Get the alternator checked before your battery goes dead.
To remove the alternator from a 1992 Mercury Topaz, first disconnect the negative battery cable to avoid any electrical shock. Then, remove the serpentine belt by loosening the tensioner pulley. Next, unbolt the alternator from its mount, typically involving two bolts, and disconnect the electrical connections. Finally, carefully remove the alternator from the engine compartment.
To install an alternator on a 1993 Mercury Topaz, first disconnect the battery and locate the alternator. Remove the drive belt, unplug the electrical connections, and remove the mounting bolts. Install the new alternator in the reverse order, making sure all connections are secure before reconnecting the battery.
The battery light is for low alternator output voltage. Try testing the alternator output using a miltimeter and if its less than 13 volts your alternator isn't putting out what it should. If it has low output check the belt tension and all wire connections before replacing alternator
The alternator in a 1994 Mercury Topaz may be going bad due to factors such as age, wear and tear, or issues with the electrical system. It's possible that there could be a problem with the voltage regulator, wiring, or connections that is causing the alternator to fail prematurely. Regular maintenance and proper diagnosis of underlying issues can help prevent repeated alternator failures.
THE FUEL FILTER IS UNDER THE HOOD ON THE WHEEL WELL, LEFT OF THE ALTERNATOR.
Mercury Topaz was created in 1983.
The starter solenoid is on the left side fenderwell next to the battery.
Try looking in a Ford Tempo or Mercury Topaz.
To change out a fan relay for a 1993 Mercury Topaz, locate the relay, typically found in the engine compartment near the radiator. Disconnect the negative battery cable, remove the old relay, and insert the new one in its place. Reconnect the negative battery cable and test the fan to ensure the new relay is functioning correctly.
the belt is worn and loose change the belt and tension properly
alternator-,ac pump-,steering pump-,crank pully-, idler pulley-,water pump