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View Full Version : Where is the Primary coil?

kennydawgg
08-09-2007, 06:29 PM
ok got a spyder gs 4g64, died on me the other day while I was driving. Checked the fuel, all ok. Moving to spark, I have none. I pulled the coil and checked the resistance, the secondary coils are in speck but the primary is out of whack. I looked through the manual about a dozen times but I can not figure out where it is. I followed the wire and it goes into the firewall. Is it on the ecu somewhere? any help would be awesome

thanks
dragonforce
08-09-2007, 10:31 PM
primary is where wire goes in to the coils. unplug it and check resistance through there.
kennydawgg
08-10-2007, 08:47 PM
I checked that, it was out of whack I can not remember what the speck is but I know it was way off. When that is bad does that mean the ecu is bad?
dragonforce
08-11-2007, 09:50 AM
if you checked the resistance in coil side and out of spec, your coil is bad.
kennydawgg
08-11-2007, 09:19 PM
ok, but where is the primary. the book says unplug the coil and check on the engine harness side and that is the resistance that is off, following that harness takes me to the firewall. so the coil must be behind that? or am I reading the book wrong?
Pushit2.0
08-13-2007, 03:40 PM
If the ignition system is the same or similar to the Neon then the ECU controls the coil directly, so from what it sounds like your ecu may be back. With out running the tests my self and/or seeing the car I can not say for sure but thats what it sounds like.

~John
dragonforce
08-13-2007, 05:22 PM
unplug the connector @ the coil and check the resistance on coil side. not wiring harness side.
kennydawgg
08-13-2007, 06:00 PM
lol I was starting to think I was on the wrong side, I guess I read the book wrong. I checked on the coil terminal side but I can not get a steady reading, it fluctuates but seems real low. the spec is .74-.9 and all I am getting is . 3 or lower. and that is from both coils, I wonder if my multimeter is messed up, its kinda strange that both coils would go out at the same time right?
dragonforce
08-14-2007, 05:54 PM
Are you using a cheap ass multimeter? Use Fluke multimeter.
kennydawgg
08-14-2007, 09:11 PM
its yellow like a fluke lol, borrowed a different one and I was getting a steady 1.2 from both coils so I ordered a new one. a joke of a price tho $70 from a junk yard, 170 from a parts store. Apparently Mitsubishi could not use the same coil on more than the 97-99 spyder.