04-20-2005
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#21
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Unsure resident asshole
Join Date: Mar 2005
Location: MN
Drives: '92 Eagle TalonTSI w/many mods
Posts: 3,696
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Re: A/F gauge hookup..
so, that would really make a difference? i grounded it on the chassis, as i figured the ground is a ground..
-A. Swift
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Black 1GB Mafia #1
744AWHP/526TQ-Shootout mode
639.6AWHP/452TQ-DB's dyno
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04-20-2005
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#22
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Hellbound
Join Date: Nov 2003
Location: St Paul
Posts: 1,390
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Re: A/F gauge hookup..
In this case, ground is also a 0 volt reference for the gauge.And its not uncommon to see a 1/2 volt or so difference in ground potential between different grounding points in a car.The 02 sensor puts out 0-1 volts relative to the ground potential of whereever its grounded at.So if you ground the gauge somewhere with a different ground potential, you'd have to either add or subtract the voltage drop from the gauge reading.When you're dealing with a rather small 0-1v signal, 1/2 v is a huge inaccuracy.
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Last edited by LightningGSX; 04-20-2005 at 09:17 PM..
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04-20-2005
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#23
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Hellbound
Join Date: Nov 2003
Location: St Paul
Posts: 1,390
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Re: A/F gauge hookup..
Ideally, you want to hook it to the same ground the 02 sensor is hooked too, which is right along side the ECU if I remember right
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04-20-2005
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#24
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Unsure resident asshole
Join Date: Mar 2005
Location: MN
Drives: '92 Eagle TalonTSI w/many mods
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Re: A/F gauge hookup..
so, u guys think its the ground, not the power that's hooked wrong?
-A. Swift
__________________
Black 1GB Mafia #1
744AWHP/526TQ-Shootout mode
639.6AWHP/452TQ-DB's dyno
I wanna go fast.
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04-20-2005
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#25
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Hellbound
Join Date: Nov 2003
Location: St Paul
Posts: 1,390
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Re: A/F gauge hookup..
Without out looking at it, my guess is, the ground or the gauge is fucked up.I doubt the power has anything to do with it
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04-20-2005
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#26
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Hellbound
Join Date: Nov 2003
Location: St Paul
Posts: 1,390
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Re: A/F gauge hookup..
Did you actually drive it? Your car should run rich when first started
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04-20-2005
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#27
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Unsure resident asshole
Join Date: Mar 2005
Location: MN
Drives: '92 Eagle TalonTSI w/many mods
Posts: 3,696
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Re: A/F gauge hookup..
yep, i've been drivin it for a few days now..that light doesnt flicker or move t all...
-A.Swift
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Black 1GB Mafia #1
744AWHP/526TQ-Shootout mode
639.6AWHP/452TQ-DB's dyno
I wanna go fast.
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04-21-2005
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#28
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Hellbound
Join Date: Nov 2003
Location: St Paul
Posts: 1,390
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Re: A/F gauge hookup..
Start by grounding it correctly, at least that will be eliminated as a possible problem.
Second I would verify with a logger or a multimeter that the o2 sensor isn't actually putting out a continuous rich reading.
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04-26-2005
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#29
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Unsure resident asshole
Join Date: Mar 2005
Location: MN
Drives: '92 Eagle TalonTSI w/many mods
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Re: A/F gauge hookup..
Ok. I grounded the A/F gauge to the 106 pin (black with a white stripe), and I also even ran the poewr for it, straight off of the battery. Now, when the car runs, the gauge is off, but when I turn the key off, the gauge turns onto the full rich led (blue) and shuts off with the safc..what's going on? Any other way to run this damn thing?
-A. Swift
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Black 1GB Mafia #1
744AWHP/526TQ-Shootout mode
639.6AWHP/452TQ-DB's dyno
I wanna go fast.
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04-26-2005
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#30
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R U DTF bro?
Join Date: Aug 2003
Location: Oak Point, TX
Drives: C8 Stingray Z51
Posts: 20,620
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Re: A/F gauge hookup..
Its a piece of shit, throw it away. Seriously, there is no point for that gauge on a turbo car other than having some LED's blinking in your face. OK....enough ranting from me....back to being in a good mood.
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Quote:
Originally Posted by Murlo26
I agree with Kracka.
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04-26-2005
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#31
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Hellbound
Join Date: Nov 2003
Location: St Paul
Posts: 1,390
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Re: A/F gauge hookup..
Don't run the power straight to the battery, hook the power up to pin 102 or 107.
Do you have the gauges input wire hooked to pin 4? If you do, you must have the wires on the gauge mixed up.
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04-26-2005
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#32
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Unsure resident asshole
Join Date: Mar 2005
Location: MN
Drives: '92 Eagle TalonTSI w/many mods
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Re: A/F gauge hookup..
the wires on the gauge can't be mixed up..they all collect into a plastic plug, that goes into the back of the gauge. Also, when i turn the illumination on for the gauges, the red lean light comes on. I don't even have the illumination hooked up to that gauge, cause it's not needed...
-A. Swift
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Black 1GB Mafia #1
744AWHP/526TQ-Shootout mode
639.6AWHP/452TQ-DB's dyno
I wanna go fast.
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04-26-2005
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#33
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Hellbound
Join Date: Nov 2003
Location: St Paul
Posts: 1,390
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Re: A/F gauge hookup..
So,
Gauge power = pin 102 or 107
Gauge ground = pin 101 or 106
Gauge o2 input = pin 4
If thats how you have it hooked up, I'd say the gauge is fucked
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04-26-2005
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#34
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Unsure resident asshole
Join Date: Mar 2005
Location: MN
Drives: '92 Eagle TalonTSI w/many mods
Posts: 3,696
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Re: A/F gauge hookup..
arg..now i gotta pull it all back out, and re-hook up the power...
-A. Swift
__________________
Black 1GB Mafia #1
744AWHP/526TQ-Shootout mode
639.6AWHP/452TQ-DB's dyno
I wanna go fast.
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04-26-2005
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#35
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Hellbound
Join Date: Nov 2003
Location: St Paul
Posts: 1,390
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Re: A/F gauge hookup..
Quote:
Originally Posted by Swifty1638
arg..now i gotta pull it all back out, and re-hook up the power...
-A. Swift
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I doubt thats your problem
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04-26-2005
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#36
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Unsure resident asshole
Join Date: Mar 2005
Location: MN
Drives: '92 Eagle TalonTSI w/many mods
Posts: 3,696
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Re: A/F gauge hookup..
I now also have the check engine light on. I wonder if I tapped the thing wrong..is the 4th pin as you are facing the plastic plug, or as the wires are nearest you? And, even IF i hooked that up wrong, how could it cause the check engine light to go off, because I connected the wires back..all I did was tap off of some wires..
-A. Swift
__________________
Black 1GB Mafia #1
744AWHP/526TQ-Shootout mode
639.6AWHP/452TQ-DB's dyno
I wanna go fast.
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04-26-2005
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#37
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Hellbound
Join Date: Nov 2003
Location: St Paul
Posts: 1,390
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Re: A/F gauge hookup..
Quote:
Originally Posted by Swifty1638
I now also have the check engine light on. I wonder if I tapped the thing wrong..is the 4th pin as you are facing the plastic plug, or as the wires are nearest you? And, even IF i hooked that up wrong, how could it cause the check engine light to go off, because I connected the wires back..all I did was tap off of some wires..
-A. Swift
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Its as if you were looking at the back of the plugs
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04-26-2005
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#38
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Unsure resident asshole
Join Date: Mar 2005
Location: MN
Drives: '92 Eagle TalonTSI w/many mods
Posts: 3,696
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Re: A/F gauge hookup..
ok..i MIGHT have screwed that up..lol. I guess I will hafta see..anyway, if that is the case (stupid, stupid me) then would the check engine light shut off by itself, or how can I re-set it?
-A. Swift
__________________
Black 1GB Mafia #1
744AWHP/526TQ-Shootout mode
639.6AWHP/452TQ-DB's dyno
I wanna go fast.
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04-26-2005
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#39
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Banana Hammock!
Join Date: Oct 2003
Location: Hastings
Drives: Shitbox
Posts: 713
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Re: A/F gauge hookup..
Wow, all this for a worthless set of blinking lights....
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1992 Eagle Talon TSi AWD
320awhp/320lb-ft tq
12.772 @ 108.57
1992 Mitsubishi Galant VR-4
678/1000
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04-26-2005
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#40
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R U DTF bro?
Join Date: Aug 2003
Location: Oak Point, TX
Drives: C8 Stingray Z51
Posts: 20,620
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Re: A/F gauge hookup..
Nice title, Swifty No, it wasn't me, but I know who it was!
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Quote:
Originally Posted by Murlo26
I agree with Kracka.
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