Re: [DML] Starter run on.
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Re: [DML] Starter run on.



This does not sound like an ignition switch problem to me.  Sounds more like a wire is rubbing through somewhere and after the engine compartment heats up a little, that wire is contacting another hot wire at some point in the circuit.  If you look at your wiring diagram, the red/white wire comes out of the ignition switch, branches off to the buzzer logic box and on to the start inhibit relay.  From there it goes to another junction and splits off three ways, one to the hot start relay, one to the cold start valve, and one to the starter.
 
If you removed the start inhibit relay during your testing, this isolates the ignition switch side from the the starter side.  This means power is being applied somewhere after the relay, when it warms up.  To check out which wire is accidently hot, run the test again, shut it down, and put a meter across the red/white on the starter and ground.  If you read voltage, you'll know to follow the red/white back to see where it is shorted to a hot wire.  If no volts are indicated, put the meter across the blue/yellow on the starter and ground.  If it is hot, then follow it back to see where it is shorted.  Remember, this is the wire that goes to the ignition resistor on the firewall.
 
Mike   TPS   1630

--- On Sun, 2/14/10, Stephen Jaeger <sjaeger@xxxxxxxxxxx> wrote:


From: Stephen Jaeger <sjaeger@xxxxxxxxxxx>
Subject: Re: [DML] Starter run on.
To: dmcnews@xxxxxxxxxxxxxxx
Date: Sunday, February 14, 2010, 7:56 PM


  



I did a test today which leads me to think the problem is in the ignition switch. Let me know if this make sense. 

I hooked up a test line to the white -red wire coming out of the ignition switch (its suppose to go to the start relay).
I started the car cold and the light came on and then went off with the key in the run position. I let the car warm up a little and then restarted it. This time the light came on (bright) then stayed on (dim) after I turned the key to off and removed it. The starter keep running. Therefore, if I have the right wires it tells me the ignition switch is faulty.

I don't know why this didn't show up when I did the pull out the start relay test (see below).

I want to send out a special thanks to John Hervey for his concern and help with trying to resolve this problem.
Steve
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