88 vert ECU in 91 vert? possible?

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May 30, 2016 | 10:26 PM

#26

Brian Deane

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Joined: Oct 2015

Posts: 224

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From: jacksonville, NC

yeah i know but when the CEL was on it wouldnt pull codes at all it wouldnt blink it would just stay on and it was wired correctly to pull them

Jun 1, 2016 | 10:56 AM

#27

jjwalker

MECP Certified Installer

Joined: Feb 2009

Posts: 3,176

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From: Mesquite, TX-DFW

Quote:

Originally Posted by RotaryEvolution

you can pull codes while the CEL is illuminated, its kinda preferred since you know a code is stored at that time. when you turn the car off any stored codes are erased and the cycle starts over.

by "stored" i mean this is old technology and there is nothing really stored longer than 1 ignition key cycle.

Not entirely accurate RE.

My S5 computer stored a code from a couple of years prior when I started the car and forgot to plug in the AFM after detailing my engine bay. I jumpered the test connector to set my idle and was like "what the hell, why do I have a code flashing?!" and it was code 8. Took me a minute to realize why it was there because it was from so long ago.

It will not, however store most codes.