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Top 2GNT Technical Performance/Engine topic #138371
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Subject: "RE: ASD bypass- ECU pinout" Previous topic | Next topic
PrimecutMay-13-14 09:49 PM
Member since May 11th 2014
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#138373, "RE: ASD bypass- ECU pinout"
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Originally posted by chipdogg
The fact that the ASD and fuel pump relays cycle shows your PCM can turn them on. Bypassing them won't solve any problems as the PCM still won't cycle the ground to the coil pack if it doesn't see proper cam/crank sync. With the 95's (at least the Neons, I believe the programming is the same for the 420a dsms), you can unplug the cam sensor and it'll run after cranking for about 8-10 seconds IF THE CAM SENSOR WAS THE PROBLEM. If you still have the old style (plastic) crank sensor with the round pins, those liked to fail and break off in the block when trying to remove them. Odds are your crank sensor is bad, but it can still work partially while cranking, so the PCM will cycle the ASD/fuel pump relays on/off when it sees a good signal during revolution. Only way to verify for sure is with an oscilliscope and a copy of a known good waveform, or shotgunning a new sensor in of course.


I have already replaced the crank and cam sensor and coil..

  

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ASD bypass- ECU pinout [View all] , Primecut, May-12-14 05:43 PM
  RE: ASD bypass- ECU pinout, chipdogg, May-13-14 09:03 PM, #1
RE: ASD bypass- ECU pinout, Primecut, May-13-14 09:49 PM #2

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