TheAMCForum.com Homepage
Forum Home Forum Home > The Garage > AMC V8 Engine Repair and Modifications
  New Posts New Posts RSS Feed - does not shut off
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Click for TheAMCForum Rules / Click for PDF version of Forum Rules
Your donations help keep this valuable resource free and growing. Thank you.

does not shut off

 Post Reply Post Reply Page  <123
Author
Message
matty 401 View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/06/2007
Location: Iowa
Status: Offline
Points: 848
Post Options Post Options   Thanks (0) Thanks(0)   Quote matty 401 Quote  Post ReplyReply Direct Link To This Post Posted: Jun/22/2017 at 8:56pm
thinking about taking to the 1/8 mile drag strip by me  will find out about a 35-45 minute drive with 456 gears 
72 matador 401 the beast
79 concord 2 door
72 matador 304 grasshopper
68 Rogue 360
93 Cherokee 2wd 4.0 5 speed
Back to Top
70 Donohue 390 View Drop Down
Supporter of TheAMCForum
Supporter of TheAMCForum
Avatar

Joined: Jul/11/2007
Location: S. Oregon
Status: Offline
Points: 4167
Post Options Post Options   Thanks (0) Thanks(0)   Quote 70 Donohue 390 Quote  Post ReplyReply Direct Link To This Post Posted: Jun/22/2017 at 9:00pm
Originally posted by FSJunkie FSJunkie wrote:

 then it could very well be the starter relay is sticking. There is a contact inside that wires the ignition coil directly to the batter while the starter is engaged. Sometimes that contact sticks on and will supply the ignition with power and keep the engine running even though the ignition switch is turned off.Whacking the starter relay with the butt of a screwdriver usually does the trick. 


Had the same thing happen to my 70 AMX on the way to its first show. I just happened to be next to a mechanic and he swapped out the ign switch and it didn't cure it. Then we swapped out the starter relay and success. BTW running a Mallory Unilite with balast resistor and 100 Amp 1 wire alt with external exciter.



Edited by 70 Donohue 390 - Jun/22/2017 at 9:05pm
67 Rogue 290 Convert
70 AMX 390
Back to Top
304-dude View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Sep/29/2008
Location: Central Illinoi
Status: Online
Points: 5535
Post Options Post Options   Thanks (0) Thanks(0)   Quote 304-dude Quote  Post ReplyReply Direct Link To This Post Posted: Jun/22/2017 at 9:02pm
Originally posted by 401harry 401harry wrote:


Originally posted by matty 401 matty 401 wrote:

got the new switch in  it shuts off so far  lol


One thing i remember is i had a problem in my Matador is that I replaced my original switch even though it was still good and noticed the new ones arent as high a quality as the old ones. Plus I had to get under and re tighten the tiny screws that hold it to the column cause the new one was tighter and would move the switch back over over time where I coudnt get the key position back to off.... I also had to cut a portion of the switch plate near the bottom to clear the brake light switch as it is tight on these cars. Must only be trouble because its a GM part I guess


Somewhere in my TSM, there is a procedure to set the ignition switch. There is a wee hole at the firewall end that you place a 1/8" drill bit In to set the adjustment before tightening down the switch. So start, on, accessory and off are in alignment with key function.

As for a loose switch, that is probably why it would not shut off, but there would be some power drain along with burning up alternator. Well any how that it's replaced, who knows.



71 Javelin SST body
390 69 crank, 70 block & heads
NASCAR SB2 rods & pistons
78 Jeep TH400 w/ 2.76 Low
50/50 Ford-AMC Suspension
79 F150 rear & 8.8 axles
Ford Racing 3.25 gears & 9" /w Detroit locker
Back to Top
matty 401 View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/06/2007
Location: Iowa
Status: Offline
Points: 848
Post Options Post Options   Thanks (0) Thanks(0)   Quote matty 401 Quote  Post ReplyReply Direct Link To This Post Posted: Jun/24/2017 at 5:04pm
went to the races drove it down and back no problem  so i think that was the problem 
72 matador 401 the beast
79 concord 2 door
72 matador 304 grasshopper
68 Rogue 360
93 Cherokee 2wd 4.0 5 speed
Back to Top
304-dude View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Sep/29/2008
Location: Central Illinoi
Status: Online
Points: 5535
Post Options Post Options   Thanks (0) Thanks(0)   Quote 304-dude Quote  Post ReplyReply Direct Link To This Post Posted: Jun/24/2017 at 5:20pm
Originally posted by matty 401 matty 401 wrote:

went to the races drove it down and back no problem  so i think that was the problem 


Great to hear your troubles are done with on the ignition switch and shutdown.
71 Javelin SST body
390 69 crank, 70 block & heads
NASCAR SB2 rods & pistons
78 Jeep TH400 w/ 2.76 Low
50/50 Ford-AMC Suspension
79 F150 rear & 8.8 axles
Ford Racing 3.25 gears & 9" /w Detroit locker
Back to Top
matty 401 View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Jul/06/2007
Location: Iowa
Status: Offline
Points: 848
Post Options Post Options   Thanks (0) Thanks(0)   Quote matty 401 Quote  Post ReplyReply Direct Link To This Post Posted: Jun/25/2017 at 10:55am
still have the kill button  just in case  lol
72 matador 401 the beast
79 concord 2 door
72 matador 304 grasshopper
68 Rogue 360
93 Cherokee 2wd 4.0 5 speed
Back to Top
rockAMX View Drop Down
AMC Addicted
AMC Addicted
Avatar

Joined: Sep/16/2011
Location: Lethbridge
Status: Offline
Points: 823
Post Options Post Options   Thanks (0) Thanks(0)   Quote rockAMX Quote  Post ReplyReply Direct Link To This Post Posted: Sep/20/2017 at 10:17pm
Did the MSD instructions specify what size of ballast resistors to use? I am doing the same thing with a Pertronix Ignitor module. The green wire from your Unilite module is black with Pertronix. It would be nice if I could order the ballast resistors and the MSD from Summit in the same order. Thanks for your help - and your clear diagram.
DWR
1968 AMX

Back to Top
 Post Reply Post Reply Page  <123
  Share Topic   

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.094 seconds.
All content of this site Copyright © 2012 TheAMCForum unless otherwise noted, all rights reserved.
PROBLEMS LOGGING IN or REGISTERING:
If you have problems logging in or registering, then please contact a Moderator or