| Slant Six Forum https://slantsix.org/forum/ |
|
| My Dart is possessed... https://slantsix.org/forum/viewtopic.php?t=52111 |
Page 2 of 2 |
| Author: | Aggressive Ted [ Tue May 28, 2013 10:35 am ] |
| Post subject: | |
How old is your battery? What is the voltage during cranking? Are you loosing a cell? or all the plates shorting out do to the mud in the bottom of the battery? Sounds like once the alternator kicks in you have enough voltage. Do a battery test at one of the local shops and see how it performs. I have a volt meter on my system to monitor status. |
|
| Author: | '67 Dart 270 [ Thu Jun 06, 2013 11:38 am ] |
| Post subject: | Fixed! |
I want to thank everyone for their helpful tips. Special thanks to Ted for his advice. I never did figure out exactly which wire was the issue, but I started with a new pigtail for the ECU, and when I starting in there wiring it up, I found so many bad wiring jobs from past owners, poor connections, mismatched wire gauges, no fusible link on the heavy circuits, wires going to nowhere from nowhere, etc., I rewired the whole engine harness. After that, she fires up every time. I had a small trash bag full of old wires before I was through, but now I'm sure its wired correctly, and as you'd imagine I've become much more comfortable with wiring issues. Now I just have to wire the horn (that was missing when I bought the Dart), an electric washer bottle (it had the old floor pump, but that was missing as well) and I bought some Sebring convertible seats that I want to wire up (also have to fabricate the seat mounts). BG |
|
| Author: | KBB_of_TMC [ Thu Jun 13, 2013 9:02 pm ] |
| Post subject: | |
You may have checked this, but remember that usually during cranking the power arrives at the ECU and to the coil + via a different route than in run. It could be that there's a bad connection there so you have trouble only in START and a good connection in RUN. You could test that by putting the ignition in RUN and use a jumper wire to turn on the starter relay (a test light ought to show power at one of the small connections at the starter relay that goes to the + coil, the other ought to energize the relay). Alternatively, disconnect the starter relay to starter cable (just for safety), then measure the voltage at the (+) coil and at the ECU in in RUN and START. For a factory setup, the + coil ought to be 6-8V in RUN and about 12V in START (for a stronger spark). The ECU ought to get about 12V for both RUN and START. If you don't get 12V in START, the starter relay or its connections are suspect. |
|
| Page 2 of 2 | All times are UTC-08:00 |
| Powered by phpBB® Forum Software © phpBB Limited https://www.phpbb.com/ |
|