 MSD gremlin, can't shut off ignition |
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| Trekkor |
 Feb 27 2005, 12:34 AM
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#1
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I do things...  Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California  |
I turn off the key but the engine keeps running.
This is a new problem after adding the MSD. Key turns off the power, I know, because I can hear the fuel pump turn off. It eventually shuts off after turning the key off/on/off/on or revving the motor with the key off. What should I do? Performance is spectacular, except gremlins are tenants. (IMG:http://www.914world.com/bbs2/html/emoticons/unsure.gif) KT |
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| Joe Bob |
Feb 27 2005, 09:12 AM
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#2
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
An internally regulated alternator has three wires....one to engine or chasis ground, one BIG RED one that goes to battery, then the D+ wire.....this is also known as the exciter, I think (IMG:http://www.914world.com/bbs2/html/emoticons/blink.gif) .....it has to go thru a powered bulb in the dash.
He, heh, big red one,,,,,exciter....heh, heh....sounds like a cheap porn movie dialogue.... This is one of TWO idjut lights....the other being the oil pressure light. When the ignition is turned on, lights are one.....when engine runs, the lights go out.... NOW, since the fuel pump and a few other items are on the +15 side of the ignition switch....there is a power feed back from the alternator that keeps the ignition switch open....it looks like the D+ line needs a little resistor to stop the feedback. |
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Posts in this topic
trekkor MSD gremlin Feb 27 2005, 12:34 AM
Aaron Cox t dog
i know the answer....i have the hyfire thi... Feb 27 2005, 12:36 AM redshift Sounds like power is getting somewhere later than ... Feb 27 2005, 12:37 AM Aaron Cox yep.... you need the diode! inline.... Feb 27 2005, 12:37 AM Aaron Cox install diode/resistor in line with SWITCHED posit... Feb 27 2005, 12:39 AM trekkor What diode?
Where me find?...grunt
KT Feb 27 2005, 12:41 AM Aaron Cox <... Feb 27 2005, 12:42 AM trekkor When all else fails, read instructions.
And, MSD ... Feb 27 2005, 01:08 AM trekkor If anyone has done this *fix*, please guide me thr... Feb 27 2005, 01:12 AM Joe Ricard My Hyfire did this last night. Only it was ANDY i... Feb 27 2005, 06:31 AM ! I'm having the same problem,,,,,looks as if th... Feb 27 2005, 08:34 AM 0396 Mike,
I'm not too experience with the electri... Feb 27 2005, 08:59 AM 0396 Mike,
Thanks for the reponse.
I was concern that ... Feb 27 2005, 09:19 AM ! An on/off kill switch will work....but the diode w... Feb 27 2005, 09:21 AM 0396 Mike,
Thank you
When your in LA , let me know, I... Feb 27 2005, 09:24 AM ! Feb 27 2005, 09:28 AM ! Another comment from the 911 board....Rich Herzog.... Feb 27 2005, 09:30 AM iamchappy The easiest place to put it is spliced into the al... Feb 27 2005, 10:12 AM ! Since most of the Radio Crap guys are computer gee... Feb 27 2005, 10:24 AM trekkor Joe, the purple/black wire is the tach wire. It no... Feb 27 2005, 10:38 AM ! Yeah the D+ wire needs it...."I" need from YOU....... Feb 27 2005, 10:40 AM trekkor Pic coming...
Take this.
KT Feb 27 2005, 10:55 AM trekkor pic.
MSD calls it a "100V/1A diode".
KT Feb 27 2005, 11:01 AM ! Thanks.... Feb 27 2005, 11:17 AM trekkor So can just place the diode in-line before the cha... Feb 27 2005, 02:57 PM Aaron Cox i believe you want the diode inline with the switc... Feb 27 2005, 02:57 PM Sparky Gee or read the manual they actually tell you that... Feb 27 2005, 03:09 PM trekkor the MSD paperwork ( above ) reads differently.
KT Feb 27 2005, 03:09 PM ! Just did the install....it works... Feb 27 2005, 04:13 PM trekkor Where did you put the diode, Mike, I want to do th... Feb 27 2005, 04:45 PM Aaron Cox <... Feb 27 2005, 06:39 PM ! Put it on the D+ lead to the bulb.....had a 50/50 ... Feb 27 2005, 07:14 PM trekkor 50/50 HUH? Not so good odds.
I NEED the real stor... Feb 28 2005, 03:13 PM trekkor Got it!
Crimped on a terminal to each end wit... Feb 28 2005, 04:08 PM
! So how come this never went to the classic threads... Jun 20 2005, 08:57 AM |
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