dynotune a/f lean shut down switch
Thread Starter
Teching In
Joined: Jul 2007
Posts: 27
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dynotune a/f lean shut down switch I have an 03 corvette, I know you are supposed to hook up the purple wire to an 02 sensor, but which one and what color wire from the sensor? According to the service manual there are 4-02 sensors, does it make any difference which one I use?
JW
I have been trying to get an answer to this question for a week
According to the Dynotune rep., you are suppposed to access the O2 isgnal from the PCM, but he didn't know which wire etc. If that's the case, it's going to take longer than the 20 mins. I was told before I purchased the unit.
Some guys are saying that you can just splice into the purple wire on either one of the front two O2 sensors. My only concern was in whether or not it would affect the voltage signal when you spliced it, and what is the prefered method?
I have been trying to get an answer to this question for a week
According to the Dynotune rep., you are suppposed to access the O2 isgnal from the PCM, but he didn't know which wire etc. If that's the case, it's going to take longer than the 20 mins. I was told before I purchased the unit.Some guys are saying that you can just splice into the purple wire on either one of the front two O2 sensors. My only concern was in whether or not it would affect the voltage signal when you spliced it, and what is the prefered method?
Launching!
Joined: Jun 2007
Posts: 274
Likes: 0
From: auburn, california
i have the same switch and your suppodt to splice the wire into the ( BANK 1 ) o2 sensor witch is the one on your driver side cat, what i did was cit the shroud on the o2 wire then spliced it into the purple wire, when you open the shroud youll see 3 wires, two are tan/brown those are the heater wires and the other is purple ( the sending unit wire) splice into that one.
THE ANSWER - From SSHEETS
You can buy pigtails for that purpose. I think I have the link saved on my laptop...I'll look later. The actual O2 sensor is a sort of a thermocouple which as a junction of specific disimaler metals.
Here they are: http://www.jegs.com/webapp/wcs/store...57617_-1_10625
From what Ive reade, narrowband only tells you if it's rich or lean from the junction's setpoint. I think 450mv is like the setpoint and anything less or more is either rich or lean.
__________________
You can buy pigtails for that purpose. I think I have the link saved on my laptop...I'll look later. The actual O2 sensor is a sort of a thermocouple which as a junction of specific disimaler metals.
Here they are: http://www.jegs.com/webapp/wcs/store...57617_-1_10625
From what Ive reade, narrowband only tells you if it's rich or lean from the junction's setpoint. I think 450mv is like the setpoint and anything less or more is either rich or lean.
__________________
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Launching!
Joined: Jun 2007
Posts: 274
Likes: 0
From: auburn, california
TECH Resident
Joined: Oct 2005
Posts: 781
Likes: 0
From: Taxme, Ohio
I think this is what he wants: http://www.casperselectronics.com/mm...Category_Code=
Casper's has them for the LT1 flat style too.
Casper's has them for the LT1 flat style too.
