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TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

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Old 04-14-2002, 09:21 AM   #1
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F'd Up ECM
OK, why, after I cut power to my ECM doesnt it clear the trouble codes out? I pull the fuse, and let it sit fer 30 sec. Doesnt clear codes. What I am not doing?? Also, I am getting a code 32 and 42. The 42 is an old code, and 32 (EGR Failure) is intermittent. Not a regular thing... Anyways, I just need to know why they arent clearing. Thank you!
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Old 04-14-2002, 10:15 AM   #2
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Depending on ambient air temp, it can take an ecm 10 mins to forget all it's codes.
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Old 04-14-2002, 10:17 AM   #3
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No ****? Thats wierd man. Oh well.... But all I need to do I cut power to it, right?
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Old 04-14-2002, 12:52 PM   #4
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Originally posted by Buck268
No ****? Thats wierd man. Oh well.... But all I need to do I cut power to it, right?
yeah, unplug the ecm fuse and let it sit while you grab a bight to eat
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Old 04-14-2002, 04:48 PM   #5
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the capacitors in the ecm need time to discharge... Untill teh voltage bleeds off, the memory will still be set. try discharging everything by turning the ignition key like your going to start it (w/ the batt. disconected, of coarse)
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Old 04-14-2002, 06:59 PM   #6
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Which ECM fuse are you pulling? The one in the fuse box is the 12v switched power source for the ECM. The one by the battery is the 12v constant source for the memory.
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Old 04-15-2002, 08:43 AM   #7
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Ah. That would explain something.
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Old 04-15-2002, 08:43 AM
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Reload this Page F'd Up ECM
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