still wont start no 12v to coil
#1
still wont start no 12v to coil
i have officially done everything new pcm every sensor and it still wont start i still cant get spark and i hear my asd clicking constantly but vary quietly anybody have any idea whats going on ? 94 dak 4x4 318 5 speed anywhere i can get new harnesses will auto harnesses work for motor ?im out of ides here
#2
#4
Jumping 12V to the coil will not do anything, as you should have 12V there anyway unless a fusible link has fried. The ECM provides a GND to energize the coil, so to bypass the relay or make it pull in, you would need to jumper a ground to the ground terminal of the coil. Now, all that is testing is whether the coil energizes. The other part of the equation is the 12VDC in/out through the contact. If the relay is bad, it's possible, tho unlikely, that the relay contact doesn't close even when the coil is energized and allow the 12V to pass from the 'in' side to the 'out' side. What's more likely, is that you are missing the 12V on the 'in' side from the ignition circuit. To truly Bypass the relay, you can jumper 12V to the output side of the relay contact and don't worry about the ASD relay energizing. Or just jumper 12V to the ignition coil.
#5
Im getting 3 or 4 volts to the coil I know my pcm is good I have two new ones I just got where is the fuseable link that I would be looking for I have tried just jumping 12v directly to the coil and it did nothing so what your saying nis jump 12v to the output side if the asd relay and run another ground to it ?
#6
Im getting 3 or 4 volts to the coil I know my pcm is good I have two new ones I just got where is the fuseable link that I would be looking for I have tried just jumping 12v directly to the coil and it did nothing so what your saying nis jump 12v to the output side if the asd relay and run another ground to it ?
Using the Factory Service Manual, jump between 12V and the output in the socket after removing the ASD.
That will eliminate the ASD for testing purposes. Don't leave it like that unless you want to kill your battery.
RwP
#7
Correct....take a jumper wire from the + of your batter terminal to the relay contact that feeds the coil. That completely bypasses the relay. The ground I mentioned was to test the relay if you want to see if it clicks in. If you don't know which wire on the relay is the contact you could just run 12v straight to the ignition coil. You said you did that but did you mean the relay coil or the ignition coil? If you put 12v to the ignition coil and you get no spark then the ignition coil is bad.
Last edited by robertmee; 11-03-2017 at 10:52 PM.
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