gmrulz4u Posted July 17, 2003 Report Share Posted July 17, 2003 Tonight I decided to try the idle re-learn procedure that some had recommended...so I pull the 20 amp fuse that's under the hood for the ECM/Fuel Pump...I took it out for about 1 solid minute, put it back in, start the car, and notice that the ECM hasn't even been reset!!!??? How do I know it didn't? Well, besides the obvious things like the engine was running the exact same as before, my OBD Scanner has a parameter called "IAC Motor Reset", it will show "NO" prior to doing an idle re-learn, but mine remained at "YES", showing that the idle was still learned. So what the hell? Should I pull the fuse for longer than a minute or so? THANKS! Quote Link to comment Share on other sites More sharing options...
NOHC_WBody Posted July 17, 2003 Report Share Posted July 17, 2003 Just disconnect the battery. walk back to your house, get a soda, and come back to it. Finish your soda, and hook the battery back up. Quote Link to comment Share on other sites More sharing options...
phantomFE3 Posted July 17, 2003 Report Share Posted July 17, 2003 and what does that accomplish? j/w Quote Link to comment Share on other sites More sharing options...
Slade901 Posted July 17, 2003 Report Share Posted July 17, 2003 http://www.sts.sae.org/membersonly/techinfo/articles/article6.htm http://www.sts.sae.org/membersonly/techinfo/articles/article7.htm Alternate Method (if Tech I is not available) Note: Either you press the brake pedal when you set the transmission to Drive or you can set the emergency brake. I would use the brake pedal instead because when you are stop at the red light (idling), your transmission is in Drive gear and you are pressing your brake pedal. With key off, disconnect battery for at least 30 seconds. Reconnect battery. Do not touch throttle (ECM looks for 0% throttle openings). Start the engine and shift to “D.†Run for ten minutes or until cooling fan cycles. Shut off engine. Wait 30 seconds. Restart. Run 5 minutes in “D†or until cooling fan cycles. Check idle speed. (Note: the ECM can only learn eight IAC counts per key cycle). Repeat procedure if not correct. Remember that when the throttle opening is less than 2% (2.8L) or 5% (3.1L), fuel delivery is based on IAC counts. Correct IAC position is critical to prevent stalling. Normal is about 15 counts. Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted July 17, 2003 Report Share Posted July 17, 2003 thanks for the info do you know of the idle relearn procedure for 3.1/manual tranny cars? i asked before but never really did get a straight answer, so usually it runs like crap for awhile after disconnecting the battery. thanks joshua Quote Link to comment Share on other sites More sharing options...
Slade901 Posted July 17, 2003 Report Share Posted July 17, 2003 It is the same procedure but for an engine with manual transmission, you just have to set the gear in Neutral and press your brake pedal. Quote Link to comment Share on other sites More sharing options...
Guest TurboSedan Posted July 17, 2003 Report Share Posted July 17, 2003 right on thanks joshua Quote Link to comment Share on other sites More sharing options...
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