94 z28 problems
06-20-2010, 11:01 AM
#16
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Join Date: Aug 2006
Location: Fayetteville, GA
Posts: 649
hmmm...Maybe thats my problem then because the software I was using said that it was in closed loop the entire time, unless it just wasn't able to read that.
06-20-2010, 11:05 AM
#17
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Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
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If you are using something like DataMaster, the bit screen shows "Closed Loop Enabled" once the system has reached required coolant temps, the O2 sensors show the required activity and the timer from start up times out. The "enabled" flag stays set, even if you exceed the TTP vs RPM threshhold required to put it into PE mode. At that point, watch the PE flag and the learning disabled flag.
06-20-2010, 12:13 PM
#18
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Join Date: Nov 2006
Location: Vero Beach, FL.
Posts: 84
Hey I am also having the erratic bogging and misfiring when it heats up. Just like everyone else's condition, its only been happening this summer when it gets really hot. First I suspected my spark plug wires, but after replacing them today with going over the valve covers, I'm still having bogging and no HP. Plus if I cruise at like 60-65 it will hesitate and misfire more noticeably. I looked at it from behind while it was idling and noticed I'm getting some seriously nasty black watery liquid out the tailpipes that is spraying out all over my driveway. I know this isnt normal h2o burn off and carbon, i was thinking the misfiring was leading to gas being burnt off or steamed in the headers and collecting soot and liquefying. If anyone else is having nasty black spatter out the exhaust let me know because it only started when my misfiring and hesitating started up. And Im positive because all that black spray on the driveway is recent
06-21-2010, 01:00 AM
#20
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Join Date: Aug 2006
Location: Fayetteville, GA
Posts: 649
If you are using something like DataMaster, the bit screen shows "Closed Loop Enabled" once the system has reached required coolant temps, the O2 sensors show the required activity and the timer from start up times out. The "enabled" flag stays set, even if you exceed the TTP vs RPM threshhold required to put it into PE mode. At that point, watch the PE flag and the learning disabled flag.
06-21-2010, 12:14 PM
#21
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Join Date: Sep 2005
Location: Tulsa, OK
Posts: 1,326
Actually now i re-read it and im not hijacking anything! (technically this is) Don't be mean like that for no reason it gets nowhere and puts others in a bad mood. I stated in detail my observations of my problem (helping RKPsk8er and other readers to decide its related or not related). Then, I asked if he has black sooty liquid out his tailpipe. Possibly he didn't notice this on his car?! The other guy went on to post about mine, i am more interested in RKPsk8er's problem/solution
06-21-2010, 01:53 PM
#22
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Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 70,695
Once someone starts to reply to you, rather than the original poster, it starts to confuse things. Go back and look... I wasn't the first to suggest that you start your own thread. Sorry is puts you in a bad mood.... but only you can control that.
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