Won't stop running when ignition is off.

[zaconrad]

I have a 1986 Jeep Comanche and today it started. Now when I turn off the ignition and take out the key it just keeps running. I just replaced the lock cylinder so I don't think its that. 
Any ideas?

[jdog]

did you plug the single red wire into the coil?

[zaconrad]

everything on the coil looks good.

[Ωhm]

18 minutes ago, zaconrad said:

everything on the coil looks good.

Double check it.

[zaconrad]

Already did 

If something was wrong with the coil it wouldn't have started 

 

[jdog]

if the red wire got plugged into the coil the vehicle will do this which is why we are asking

[Ωhm]

Find that single red wire and make sure its not plug into anything except the Engine Compartment Lamp, if equipped. Wire is HOT at all times. 

[zaconrad]

I have made no changes to the coil since it was driving fine. The red wire is were its supposed to be.

 

[Ωhm]

With ENGINE RUNNING and KEY OFF. Measure for B+ at D2_4. Should show 0vdc.

 

 

[zaconrad]

I don't have a diagnostic tool. Or is there something else that I'm missing?

[jdog]

That's a plug in the engine bay, should have a yellow dust cap on it. Using a dvom perform the test above.

[Dzimm]

I had this happen on my 95 once.  I ended up pulling the battery cable to get it shut off.  I cleaned up the battery terminals and hooked it back up and it hasn't done it since.  No idea if the battery cables were the issue or not but worth a shot I suppose.

[zaconrad]

I'm still having problems with the diagnosis.

[Ωhm]

Did you find the connectors D1 & D2?

 

D2_4 pin is IGN SW feed (I1). With DVOM connected between D2_4 and Battery GND, KEY OFF, your voltage reading should show 0vdc, otherwise your IGN SW (I1) feed is shorted to voltage (B+).

[jdog]

they should look like this

[zaconrad]

Ok I figured it out. I don't know how but I was having alternator issues wich was the result of this problem. After I fixed my alternator problem went away.