 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, 09:30 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 |
Another comment from the 911 board....Rich Herzog...he posts here too...
a diode... the alternator charging current is powering the ignition, IIRC you need a diode in the "switched +12" line. i don't recall which direction it needs to point, but one way will work, and the other won't... a standard 1W epoxy rectifier diode from Radio Snack should do the trick (this is not a critical application. a diode is a check valve for electricity - flows only one way. this is covered in MSD's instruction sheets, which are available online in PDF form. i'll go dig up my 911 ignition folder if i need to, but IIRC it's pretty easy to find the section where they talk about the diode and how it's installed |
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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 ! An internally regulated alternator has three wires... Feb 27 2005, 09:12 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 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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