2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

spark problems

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Old Jan 2, 2011 | 05:23 PM
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I fc3SLIDE's Avatar
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From: cape coral
spark problems

ok so ive figured out that i have no power from my key i have power going in but not out i tested every pin on the left side of the key for power and there was none so that would explain no spark or fuel pump or any of my switched accesories working got any ideas besides being a bad ignition switch
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Old Jan 2, 2011 | 06:22 PM
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From: tulsa,ok.
If the Black wire to the ignition switch has constant voltage but none of the other wires do when the key is turned to accessory, on, and the start position then the ignition switch is the likely cause.
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Old Jan 2, 2011 | 07:03 PM
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From: Goose Creek, SC
Turn the key on. Hook up the black lead of your multimeter to ground. Touch the red lead of the multimeter to each of these wires : blue, blk/wht, blk/red, blk/blue. If you touch one and the mulitmeter reads anything other than 12v, you've got a bad ignition switch.
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Old Jan 2, 2011 | 07:07 PM
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From: cape coral
Originally Posted by AGreen
Turn the key on. Hook up the black lead of your multimeter to ground. Touch the red lead of the multimeter to each of these wires : blue, blk/wht, blk/red, blk/blue. If you touch one and the mulitmeter reads anything other than 12v, you've got a bad ignition switch.
everything read dead 0 except the 2 wires that run into the front of the ignition closest to the steering wheel 2 little wires... besides that reading 12v everything else was at 0 or .2
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Old Jan 2, 2011 | 07:25 PM
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From: tulsa,ok.
Originally Posted by I fc3SLIDE
everything read dead 0 except the 2 wires that run into the front of the ignition closest to the steering wheel 2 little wires... besides that reading 12v everything else was at 0 or .2
The solid Black wire found in the same ignition plug as the B/W wire is what powers the the ignition switch and w/o power on this wire then the ignition switch cannot control anything as in powering up the IG1, IG2 and ACC fuses. Check the Main fuse in the engine fuse box and check for voltage leading into and out of the engine fuse box via the Black wire. This wire runs to the ignition switch.
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Old Jan 2, 2011 | 07:57 PM
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A quick check to see if the ignition switch is passing power out to the interior fuse box: With all ignition switch plugs attached and key to ON, do you have turn signals when put left or right? IF you do, then the ignition switch is good.

OR, with key put to ON, do the meters show indications? Should if the Meter fuse is in.

Also if the pwr windows work with key ON..........the ignition switch is good.

IF none of the above.........and I mean NONE of the above work with key ON..........then you'd suspect the ignition switch is not getting any power from the engine bay fuse box......but you mentioned some voltage at the ignition switch. But there's a problem with that. you really should find the elect Plugs for the ignition switch which are about a foot fwd of the switch itself and pull aprat the one that has the pure black wire in it. That wire should have power 24/7. No key required for that. Not there? Loss of power from the engine bay to the switch.
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Old Jan 3, 2011 | 02:02 PM
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From: cape coral
Originally Posted by HAILERS2
A quick check to see if the ignition switch is passing power out to the interior fuse box: With all ignition switch plugs attached and key to ON, do you have turn signals when put left or right? IF you do, then the ignition switch is good.

OR, with key put to ON, do the meters show indications? Should if the Meter fuse is in.

Also if the pwr windows work with key ON..........the ignition switch is good.

IF none of the above.........and I mean NONE of the above work with key ON..........then you'd suspect the ignition switch is not getting any power from the engine bay fuse box......but you mentioned some voltage at the ignition switch. But there's a problem with that. you really should find the elect Plugs for the ignition switch which are about a foot fwd of the switch itself and pull aprat the one that has the pure black wire in it. That wire should have power 24/7. No key required for that. Not there? Loss of power from the engine bay to the switch.
ok hailers great info but nothing works no blinkers no nothing but i do have power in said plug coming in just not going out so like suspected bad ignition im ordering one on wednesday ill let ypu guys know what happens
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Old Jan 3, 2011 | 04:52 PM
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From: FORT WORTH TEXAS
Pull the ignition plug off that has the pure black wire and black/white wire. Then with a piece of electrical wire bared at both ends, jumper the pure black wire to the Black/White wire. When you do this the meters should work and turn signals work proving it's the ignition switch that is bad.

If you don't get the meters working and turn signals working like this...............then it's not the switch. You should also hear the Main Relay click when those two wires are jumpered.

Jumpered meaning one end of the wire put in the black wires contact and the other end of that wire into the black/white wires contact. Try it is my recommendation.
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