Just purchased a 94 concord. When I turn the key to start sometimes the dash lights comes on with no start, sometimes I hold the key in start for 3-5 seconds and then the car will start, and sometimes the...
The problem sounds very much as if it is on the electrical side. OK so here is the path: Battery, Ignition switch position 2 and fuel pump is engaged, position 3 and current passes through the starter fuse and relay to the starter solenoid (located piggy back on the starter motor) The starter solenoid pushes the starter motor armature forward to engage with the toothed rim of the flywheel. At the same time the armature bridges the contacts between the high power contacts to cause the motor to spin up and turn the engine over.
Check the external stuff first. Make sure the battery terminal and cable connections are clean and tight. Make sure the earth return strap from the engine block to the car body is intact, clean and secure, free of corrosion (unbolt, wire brush clean and re-bolt). Remove starter motor and solenoid, dismantle and check on the heavy duty electrical power striker plate contacts for wear, replace as necessary (often these starter motors are by Denso and replacement kits for the copper contacts can be got for less than $10). Check the main starter fuse, clean the contacts until bright. Check the starter relay. If possible remove the cover and inspect the printed circuit board, resolder any dry or annular cracked joints. Pass a folded piece of fine sand paper between the electrical breaker contacts to freshen them up. Make sure the relay pins and corresponding sockets are all clean and bright.
The above sounds like a lot of work but once it is done and you are reassured that everything is as it should be you will not need to re-examine this for another ten years or more.
Lastly, make sure the ignition switch is OK. Contacts can become worn and if you find that a wiggle the ignition barrel with the key in results in 'start' versus 'no start' then the fault is here.
Aug 25, 2010 |
1994 Chrysler Concorde