Question about 1998 Ford Expedition

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Not starting some times it startes right up most of the time it just goes click if i keep triing eventuly it startes it could be 30 tries sometimes

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Dear customer,
You've Got to check the connections. The connections at the battery as well as at the solenoid/starter. There may also be an ignition switch problem but this would likely cause other problems as well. The connections should clean and tight and if your battery terminals are an after market type the part where the cable goes inside the terminal needs to be checked and cleaned if it can be disassembled. The starter solenoid is usually mounted on a fender close to the battery in the engine compartment and are notorious to cause failure and often times intermittent failures as well (one time it works another time it doesn't).
hope u find it useful. thank you. good luck!!

Posted on Jul 09, 2008

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Hi,

Sounds like either a bad starter or a starting solenoid. In some instances it could be as simple as the battery about to give up or a loose battery cable/terminal.

The starter system is initiated at the ignition switch when the key is turned to start. At this point, the ignition switch then provides +12VDC to the staring solenoid. The starting solenoid then performs two (2) functions. It provides the switching action (hundreds amps) from the battery heavy cable to the actual starter motor. The solenoid likewise pushes a small pinion gear along the shaft of the starter motor to engage the ring gear. The ring gear is of course on the edge of the flywheel which in turn is attached to the crankshaft.

Starter system problems could be corrected by:
1. check battery, battery cables and connections;
2. charge the battery if required;
3. clean brushes and guides of brush holders of the starter motor;
4. clean the commutator and commutator segments;
5. check/replace the armature or field coils if determined to be defective;
6. in some extreme cases it could be the drive pinion or the flywheel gear ring is defective.
7. often it is the big switch that the solenoid activates that looses contacts causing no +12V internally to the motor.
8. It could possibly be a defective the IGN switch itself. Relative to this, you might try and check the connectors/terminals and electrical joints.

In the picture below, the upper portion is the starter solenoid while the one below it is the actual starter.
not starting - c9b6a69.jpg
Given the amount of work to overhaul a starter, you might consider just replacing it.

This of course assuming that all other vital components of the car are working.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

Posted on Jul 09, 2008

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