Alternator is rated at 110 amps. The alternator should provide the voltage required to run the engine. It should handle the system current load. Check the alternator if there is a charge voltage. Turn the engine off and measure the voltage across the two battery terminals with a DC volt meter. Start the engine and measure the voltage across the battery terminals. Look for an increase in voltage on the volt meter. Typically it can go as high as 14.7 volts. If the voltage stays the same as when measuring the across the terminals with the engine off, the alternator is probably bad. If the voltage is charging but not much higher than when the engine is in the off position, some diodes could have burned out in the alternator. Also check the charging wires and ground wires coming from the battery.
Unbolt it from the engine after you take it off the battery. Reverse the procedure with the new one.
To remove the starter motor from a Ford Focus, first disconnect the negative battery cable to ensure safety. Then, locate the starter motor, usually found near the transmission. Remove the electrical connections from the starter, followed by the mounting bolts securing it to the engine. Once the bolts are removed, you can carefully pull the starter motor out of its position.
To change the starter motor on a Ford Focus, first disconnect the negative battery cable to ensure safety. Then, remove any components obstructing access, such as the air intake or engine cover. Unbolt the starter motor from its mount, disconnect the electrical connectors, and then replace it with the new starter. Finally, reassemble any removed parts, reconnect the battery, and test the new starter for proper operation.
First, you need to fix whatever's wrong, then you unhook your battery cable for about 30 minutes, then re-hook. If it comes back on, you have a problem that was not addressed.
Try disconnecting your red battery cable for an hour, or two, then re-connect it. This works sometimes, IF your engine is fully tuned; air filter, fuel filter, oil change, transmission fluid, etc.
Follow the positive cable from the battery, it will lead right to the starter.
Begin by removing the positive cable from your battery. Remove the cables from the front of the starter. Remove the starter retaining bolts. Reverse the process to install your new Ford starter.
Unhook your negative battery cable, turn your light switch on, then turn it off and reconnect the battery. That should reset the computer.
The check engine light on a 2002 Ford Focus can be reset by disconnecting the battery for 1 to 2 minutes. This resets the vehicle's computer and clears the light.
you can usually reset those by disconnecting the car battery for 15sec or so.
I was looking at the 2007 Ford Focus Owner Guide and it shows : For the 2.0 liter and 2.3 liter engines : Motorcraft ( BXT-96R ) and with both sizes of engine , if you have either the Audiophile Radio or an engine block heater use the Motorcraft ( BXT-40R ) battery
The airbag fuse for the Focus is in the fuse box located next to the firewall inside the engine compartment. The fuse box has a plastic cover that has to be removed to access the fuses.