Subject	This is where datalogging is useful
Posted by	ChristopherTheOne on April 25, 2015 at 3:19 PM
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In Reply To	OBD2 VS OBD1 300 engines are not different, Cams Are posted by Cjw3 on April 23, 2015 at 08:13 PM
Message	The downside of knowing these engines and their control systems is that you can spend forever speculating as to the cause of some odd behavior, esp. something as generic as a stumble or hesitation. If you've ruled out the obvious stuff like boost/vac leaks, clogged PCVs, busted IACV, etc., it's useful to hook up a Conzult or something similar and do a few runs while logging the sensor data. Being able to see what the ECU sees when it starts acting up is invaluable. Weird crap like TPS voltages not aligning with what you test at the sensor due to connection/harness/wiring issues, or the closed-throttle switch signaling when you're actually running light throttle.
Follow Ups	'96NA Engine on a '93NA ECU, Off Idle Stumble - Cjw3 20:34:53 04/21/15 Maybe ECU & Harness? - ChristopherTheOne 02:24:43 04/23/15 OBD2 VS OBD1 300 engines are not different, Cams Are - Cjw3 20:13:15 04/23/15 Throttlebodies syncronised? (n/m) - kickerzx 16:14:05 04/24/15 Yes - Cjw3 18:58:46 04/24/15 This is where datalogging is useful - ChristopherTheOne 15:19:26 04/25/15 I was wrong...the TPS unit is different on the '96 - ChristopherTheOne 18:09:05 04/26/15
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