Electrical electrical issue?

jrichker · Jun 13, 2019

@fredfifty

Recall on Ford Ignition switches:

Revised 7-June-2014 to add Torx bit picture and source. Also added replacement ignition switch wiring pigtail picture, part numbers and sources.

Some of the symptoms of ignition switch problems are things that don’t work or are intermittent like radio, turn signals, wipers or heater.

There was a FREE recall on Ford ignition switches. They overheat and sometimes catch fire. That burns up the steering column and sometimes the car interior. Since this is very old information, you may not be able to get the switch replaced for free anymore. The auto parts stores sell the switches for $13-$15.

While you are working on the switch, check the wiring and connector closely. A replacement connector with new wiring pigtails is available from most auto parts stores

AutoZone and Advanced Auto Parts have the same Part Number: 434 - may have to order, not always in stock

Advanced Auto Parts alternate part number: PT5534

Saleen0679 was nice enough to dig this up for us awhile back: How to replace ignition switch on 1979-1993 Mustangs.
http://www.mustangandfords.com/how-to/engine/5657/

Torx bit set from Advance Auto Parts

Autocraft torx bit set – have small hole in tip for tamper proof screws.
Part No. AC571/W1386 Cost approx. $12 +tax

Diagrams courtesy of Tmoss & Stang&2birds

Ignition switch wiring

Fuel, alternator, A/C and ignition wiring

fredfifty · Jun 16, 2019

ok so changed to a new motorcraft ignition switch, had battery and alternator check and they passed, sanded down ground points to shiny metal for good contact. still no crank no start no dash lights but headlights still turn on and key still chimes

General karthief · Jun 16, 2019

Do you have power coming out of the ignition switch in the crank position?

fredfifty · Jun 16, 2019

General karthief said:
Do you have power coming out of the ignition switch in the crank position?

how would i check that?

fredfifty · Jun 16, 2019

ok so is it the gray/yellow wire or black/light green wire to check for power on the ignition switch?

General karthief · Jun 16, 2019

Ignition switch wiring http://www.veryuseful.com/mustang/tech/engine/images/IgnitionSwitchWiring.gif
#37 white/pink wire, to clutch interlock (neutral safety switch for auto)
Also check the two yellow wires #37 to fuse link (my guess this is where your problem lies but double check)

fredfifty · Jun 16, 2019

tested all 3 wires mentioned, grounded test lamp, turned key to crank and no power

fredfifty · Jun 16, 2019

any idea what that the blank slot is on the pigtail end of that ignition switch? under the outter yellow wire

General karthief · Jun 16, 2019

Nothing goes there.
look at the ignition wring pic above.
do you have power coming into the switch?

fredfifty · Jun 16, 2019

ok so something happened. i take seat out for better access and for s and giggles i turn key and it starts. now i go to check wires at solenoid while running and touch and maybe wiggle wires on battery side of solenoid and motor cuts out and back to no dash lights no crank no start.

fredfifty · Jun 16, 2019

well , i think this is the issue, that yellow wire is just barely touching the solenoid post

General karthief · Jun 16, 2019

Lets hope that's it

fredfifty · Jun 16, 2019

General karthief said:
Lets hope that's it

hooked it up and we’re back in business. im 99% sure that was it. thanks for the help, man!

General karthief · Jun 16, 2019

Well you did all the work
i am just the cheering section.

Electrical electrical issue?

jrichker

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fredfifty

General karthief

wonder how much it would cost to ship you a pair

fredfifty

fredfifty

General karthief

wonder how much it would cost to ship you a pair

fredfifty

fredfifty

General karthief

wonder how much it would cost to ship you a pair

fredfifty

fredfifty

General karthief

wonder how much it would cost to ship you a pair

fredfifty

General karthief

wonder how much it would cost to ship you a pair

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Electrical electrical issue?

StangNet's favorite TOOL

wonder how much it would cost to ship you a pair

wonder how much it would cost to ship you a pair

wonder how much it would cost to ship you a pair

wonder how much it would cost to ship you a pair

wonder how much it would cost to ship you a pair

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