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Paul Workman · 09-28-2018

I agree that fueling may be @ issue. Scanning the ALDL port will give you a pretty good idea how it is running. (O2s don't always throw a code - at least not right away. They can be failing or getting weak long before failing completely to cause a code (I've found).

Besides O2 function, you will be able to get a dynamic evaluation of ALL the sensors: a good place to start!

I don't want to start speculating until we see what the scanner says first. JMO.

09-28-2018	#17
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,493	Re: Hesitation than cleared itself I agree that fueling may be @ issue. Scanning the ALDL port will give you a pretty good idea how it is running. (O2s don't always throw a code - at least not right away. They can be failing or getting weak long before failing completely to cause a code (I've found). Besides O2 function, you will be able to get a dynamic evaluation of ALL the sensors: a good place to start! I don't want to start speculating until we see what the scanner says first. JMO. __________________ Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry