no spark from trailing coil......
#1
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no spark from trailing coil......
but the lead coil has spark, how is that possible? both of them should be getting a signal from the crank sensor. i tested the 4 wire connector from the crank sensor no power? but the main fuse block, all the fuses are good. there are two connectors going to the trailing coil, im pretty sure that the 4 wire one is power, ground and signal wires, right? whats the other two?
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HAILERS
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The CAS PRODUCES power, it does not RECIEVE power.
Trail coils are not close to being required for starting.
There's a free, online Factory Service Manual available on this site plus wiring diagrams.
This link more or less tells how the ignition system works: http://www.teamfc3s.org/info/articles/demystifying.html
There's a self protection system built in the ECU that at times allows Lead spark but kills the Trail spark. IF the LEAD spark is good, then the engine isn't starting for some other reason than a spark issue.
If you have spark then you should be looking to see if the fuel injectors are getting batt voltage when the key is ON or better. Check them out on the small ECU plug. LIGHT GREEN WIRE, LIGHT GREEN/BLACK WIRE, LIGHT GREEN/RED WIRE, LIGHT GREEN/WHITE WIRE. KEY to ON, pull the small plug off and see if there is batt voltage on each of those wires ..................as a start.
The harness that attaches to the fuel injectors etc is the EM or emisions harness. I say this so you dont' get confused when looking at the wiring diagrams. The question is, what EM harness did you use on the engine? Turbo or non turbo?
There is a SEARCH function on this forum, with twelve thousand three hundred and twelve threads on *My car won't start*. You might look at those also. My approach makes more sense though.
Trail coils are not close to being required for starting.
There's a free, online Factory Service Manual available on this site plus wiring diagrams.
This link more or less tells how the ignition system works: http://www.teamfc3s.org/info/articles/demystifying.html
There's a self protection system built in the ECU that at times allows Lead spark but kills the Trail spark. IF the LEAD spark is good, then the engine isn't starting for some other reason than a spark issue.
If you have spark then you should be looking to see if the fuel injectors are getting batt voltage when the key is ON or better. Check them out on the small ECU plug. LIGHT GREEN WIRE, LIGHT GREEN/BLACK WIRE, LIGHT GREEN/RED WIRE, LIGHT GREEN/WHITE WIRE. KEY to ON, pull the small plug off and see if there is batt voltage on each of those wires ..................as a start.
The harness that attaches to the fuel injectors etc is the EM or emisions harness. I say this so you dont' get confused when looking at the wiring diagrams. The question is, what EM harness did you use on the engine? Turbo or non turbo?
There is a SEARCH function on this forum, with twelve thousand three hundred and twelve threads on *My car won't start*. You might look at those also. My approach makes more sense though.
Last edited by HAILERS; 08-13-08 at 11:17 AM.
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