Ignition Switch

[vacuum 6]

Who sells ignition switches? Thanks.

 

['87 Turbo "T"]

Mikes Montes.

Ignition Column Switch and Keys-1164

www.mikesmontes.com

You can always try Highway Stars, G-Body Parts, or your local green grocer…..JK, JK. Hell GM had the same ignition/door set-up for like 30 years!

 

[vacuum 6]

Sorry my bad the ignition switch that's under the dash.

​

 

['87 Turbo "T"]

Sorry my bad the ignition switch that's under the dash.

​

AHHH that switch . I used a Standard US-105. No issues so far.

 

[vacuum 6]

OK good. Reading the STD is the best next to OEM. The "T" is for tilt wheel.

Standard Motor Products US105T Ignition Starter Switch​

 

[MikeS]

Who sells ignition switches? Thanks.

If I may ask, what issue has you replacing the switch? I’m chasing a periodic failure of the fuel pump to prime, and looking at the ignition switch as a possible culprit.

 

['87 Turbo "T"]

If I may ask, what issue has you replacing the switch? I’m chasing a periodic failure of the fuel pump to prime, and looking at the ignition switch as a possible culprit.

I replaced mine due to age & the terminals not allowing the same voltage.

I think I gained a volt back after the switch. Had 13ish at battery & alternator a bit less on Scanmaster.

 

[vacuum 6]

If I may ask, what issue has you replacing the switch? I’m chasing a periodic failure of the fuel pump to prime, and looking at the ignition switch as a possible culprit.

I was having issues with the fuel pump priming then while driving the car stalled: lost fuel pump, ac/heater fan blower, trans solenoid (no gear) and high beams. I believe its one of the fusable starter links or ignition switch plug. I really dont know. Hope someone else chimes in

Oh once I got the car home the high beams starting working again. Good times!

 

[MikeS]

I was having issues with the fuel pump priming then while driving the car stalled: lost fuel pump, ac/heater fan blower, trans solenoid (no gear) and high beams. I believe its one of the fusable starter links or ignition switch plug. I really dont know. Hope someone else chimes in

Oh once I got the car home the high beams starting working again. Good times!

Post an update with results. My ignition switch is at least 25yrs old. I was going to put in a new switch just to eliminate it as a possible cause.

 

[vacuum 6]

I have 11.6v at the ECM/IGN fuse & with the headlights on 11.2V. Battery voltage 12.1

I think I have a fusible link issue not under dash ignition switch.

 

['87 Turbo "T"]

I have 11.6v at the ECM/IGN fuse & with the headlights on 11.2V. Battery voltage 12.1

I think I have a fusible link issue not under dash ignition switch.

Also check your voltage at the alternator. Could be the + battery cable if it hasn't been changed. I go battery to ground, get voltage, alternator to get ground, & get voltage. That verifies that my battery & cable from the battery to alternator are good(as long as voltages are close). Then I head into cabin & check voltage.

B

Thread 'Voltage Drop'

Sep 22, 2025

Hello everyone. Hope all is well. I'm having a problem with my battery losing voltage when I turn the key to the "run" position. As a result, car will not start. I did a "parasitic drain" check. It's within specs, 38 Mili amps. [.038] I did some checking with "fusible links." Also, I relocated all "five" of them up on to plastic inner fender years ago, I really didn't think the "starter solenoid" was an ideal location. I brought a feed from the battery to supply power. Anyway, there is not a whole lot of information with regard to fuse links. I found some in the GM books I have, but not a...

• brandnu6
• Replies: 4
• Forum: Engine Tech

Post #2 has good prints if ya'd like to trace.

 

[vacuum 6]

battery to ground & alt to ground are both the same @ 12.2V

 

[MikeS]

Walmart sells 4ga wire in 12/18/24” lengths with ring terminals, adding some extra grounds might be worthwhile.