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Re: ecu swap
[Re: drumcat]
#977146
04/20/11 10:38 PM
04/20/11 10:38 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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yes green wire not used on a 4 pin ECU (orange/chrome)/2 terminal (single) type ballast and a $15 dollar parts house 4 pin replacement ECU will work fine (assuming the orange ECU is bad ) and parts houses have a ~$15 5 pin ECU also which requires the 4 terminal ballast (not needed in your app) and that OE type setup uses the green wire to power the 5th ECU pin. Pull the yellow "ign" terminal off of the starter relay to disable the starter (saves the batt/less noise distraction) and have a helper turn the key to "start" & see if the coil positive primary terminal has near batt voltage & if so have him relax for a second & you take the wire(s) off of the coil NEG pri terminal and w a jumper wire w alligator clips on each end ground the terminal (not the wire(s) you removed from this terminal) to ground repeatedly like Morse Code as he turns the key back to/& holds it to "start" & see if that makes the coil secondary wire (the dist end) held 1/4" from a good ground produce a spark & if so the coil/ballast/their supporting wiring is good (though a coil can test OK when cold then act up/erratic when hot) and the prob is the orange box or the dist pickup or either of their supporting wiring. reinstall the wire(s) on the coil neg pri terminal/remove the alligator clip jumper and check the gap in the pickup/ohm it and if you have an extra dist plug it in & spin it by hand & see if you now get a spark from the coil secondary wire w him holding the key to start & need to have a spark w the key in "on" also. Parts houses can test an ECU but it is a cold test & check it's ground & can make sure it's wired good & if the dist pickup is functioning & will not trigger the ECU to open the coil pri then the ECU is bad. Double check/repeat test everything
live every 24 hour block of time like it's your last day on earth
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Re: ecu swap
[Re: RapidRobert]
#977150
04/23/11 01:59 AM
04/23/11 01:59 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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Unplug dist pick-up coil 2 wire connector at the dist. With the key on scrape the male end of the wire harness dist wire to ground. That should trigger the ECU everytime you touch the male wire to ground. Ron
Last edited by 383man; 04/23/11 01:59 AM.
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Re: ecu swap
[Re: drumcat]
#977154
05/07/11 10:09 PM
05/07/11 10:09 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
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Posts: 36,041
Lincoln Nebraska
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To pin it to the dist it needs to b sparking per your test in RUN and START & can pull the yellow "sol" wire off of the starter relay for a minute for the START test. yes it does not physically matter how the dist is spun whether you do it or the intergear does it & it self generates a current & doesn't need to b grounded/mounted but do visual check the gap/reluctor for anything not kosher & ohm it if you have a meter b 4 condemning it
live every 24 hour block of time like it's your last day on earth
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Re: ecu swap
[Re: drumcat]
#977157
05/07/11 10:37 PM
05/07/11 10:37 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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Yeah we need to confirm that your getting fire to the ECU/coil in start (ign2)when the sw itself is turned to "start" otherwise I'd hate to see the pickup get R&R'd & that not b it esp as there may b a sw/wiring prob since in addition it wont energise the starter relay. If you're wanting to fire it up/break it in ASAP then yes R&R the pickup if it's bad/jump start it at the relay as not likely the "start" side wiring AND the pickup are BOTH bad
live every 24 hour block of time like it's your last day on earth
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Re: ecu swap
[Re: drumcat]
#977159
05/07/11 10:53 PM
05/07/11 10:53 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I'm dragging my tail myself on stuff, Holler how it turns out
Last edited by RapidRobert; 05/07/11 11:08 PM.
live every 24 hour block of time like it's your last day on earth
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