Power source for WBO2 - NOT Acc Power
Thread Starter
Pro
Joined: Jan 2017
Posts: 502
Likes: 193
From: Central Pennsylvania
Power source for WBO2 - NOT Acc Power
My WBO2 is currently hooked to Acc Power. Every time I Cycle the key it goes through a POST and takes a LONG time to start showing numbers - my Tuner doesn't like that. He wants to see data right away - no matter how difficult it is to start. When I load a new tune it usually takes a while to 'find itself' - a few key turns till it starts.
Is there a Key On power source somewhere that is NOT interrupted during starting that I can use? I don't want constant power. I could hook it right to the Batt with my own switch but we all know how many times I'll come out to a car with a Very Dead Battery because I forgot to manually shut it off.
I'm sure I'm not the only one that needed this source - search didn't show me much.
Thanks for any input
Is there a Key On power source somewhere that is NOT interrupted during starting that I can use? I don't want constant power. I could hook it right to the Batt with my own switch but we all know how many times I'll come out to a car with a Very Dead Battery because I forgot to manually shut it off.
I'm sure I'm not the only one that needed this source - search didn't show me much.
Thanks for any input
Burning Brakes
Joined: Jun 2018
Posts: 756
Likes: 172
From: SC
My WBO2 is currently hooked to Acc Power. Every time I Cycle the key it goes through a POST and takes a LONG time to start showing numbers - my Tuner doesn't like that. He wants to see data right away - no matter how difficult it is to start. When I load a new tune it usually takes a while to 'find itself' - a few key turns till it starts.
Is there a Key On power source somewhere that is NOT interrupted during starting that I can use? I don't want constant power. I could hook it right to the Batt with my own switch but we all know how many times I'll come out to a car with a Very Dead Battery because I forgot to manually shut it off.
I'm sure I'm not the only one that needed this source - search didn't show me much.
Thanks for any input
Is there a Key On power source somewhere that is NOT interrupted during starting that I can use? I don't want constant power. I could hook it right to the Batt with my own switch but we all know how many times I'll come out to a car with a Very Dead Battery because I forgot to manually shut it off.
I'm sure I'm not the only one that needed this source - search didn't show me much.
Thanks for any input
Thread Starter
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Joined: Jan 2017
Posts: 502
Likes: 193
From: Central Pennsylvania
Thanks LWS - Great spot, easy
Yes - MarkMbaha1, It is a Wide Band O2 sensor. My gauge doesn't start reading for a LONG time. Too long for the tuner.
PLUS - they NEED to warm up before you start the car or it shortens the sensor's life a LOT!
Yes - MarkMbaha1, It is a Wide Band O2 sensor. My gauge doesn't start reading for a LONG time. Too long for the tuner.
PLUS - they NEED to warm up before you start the car or it shortens the sensor's life a LOT!
Safety Car
Joined: Jan 2012
Posts: 3,956
Likes: 520
From: Da U.P.
ACC power is dropped when the key is turned to start. Ignition power stays on when the key goes to start, but won't have power in ACC. The correct answer is to add your own relay for this and trigger it off of an ignition power source.
Burning Brakes
Joined: Jun 2018
Posts: 756
Likes: 172
From: SC
Is this something you added? What knowledge do you gain from "the numbers"? Ty
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Joined: Jan 2017
Posts: 502
Likes: 193
From: Central Pennsylvania
Where do you suggest I pull the signal from If I add a relay (I've added several in this project - what's one more, Right?)
MarkMbaha1 - I added a LSA supercharger to my 03Z. The O2 sensor tells a qualified tuner what going on inside the combustion chamber. It measures Air / Fuel ratio and if it ain't right you get to buy a new engine. Those 'Numbers' are VERY important. I cannot explain it to you but there's a TON of info on 'TUNING' on the web. It is a rabbit hole for sure.
Burning Brakes
Joined: Jun 2018
Posts: 756
Likes: 172
From: SC
Thanks for the reply. I will test his Fuse 19 spot to see if it does what the schematic says it will do. That would be simple.
Where do you suggest I pull the signal from If I add a relay (I've added several in this project - what's one more, Right?)
MarkMbaha1 - I added a LSA supercharger to my 03Z. The O2 sensor tells a qualified tuner what going on inside the combustion chamber. It measures Air / Fuel ratio and if it ain't right you get to buy a new engine. Those 'Numbers' are VERY important. I cannot explain it to you but there's a TON of info on 'TUNING' on the web. It is a rabbit hole for sure.
Where do you suggest I pull the signal from If I add a relay (I've added several in this project - what's one more, Right?)
MarkMbaha1 - I added a LSA supercharger to my 03Z. The O2 sensor tells a qualified tuner what going on inside the combustion chamber. It measures Air / Fuel ratio and if it ain't right you get to buy a new engine. Those 'Numbers' are VERY important. I cannot explain it to you but there's a TON of info on 'TUNING' on the web. It is a rabbit hole for sure.
Do you need that if the engine is equipped with a Supercharger from the factory? I've had several factory Supercharged cars Jag XKR...but never had thst.
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Thread Starter
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Joined: Jan 2017
Posts: 502
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From: Central Pennsylvania
Us Hot Rodders can't leave well enough alone and have to CONSTANTLY F with things - we can't help ourselves.
Melting Slicks
Joined: Nov 2013
Posts: 2,049
Likes: 316
From: USA
My switched power source is from the underhood fuse box.
Some options:
Fuse 16 - PCM - Hot in run, bulb test or start
Fuse 22/18 - INJR1/2 - Hot in run or start
Fuse 13 - F/PMP - Hot in run or start
I've used 13 / Fuel pump for ages however it does seem to cycle power on the wideband when you start it up-- which as you talk about, prolongs the heatup cycle and how long until it starts giving data.
I just moved it over to 16/PCM to see if that gives me the result I want.
Don't use 23 / PCM B, which is "hot at all times"
Some options:
Fuse 16 - PCM - Hot in run, bulb test or start
Fuse 22/18 - INJR1/2 - Hot in run or start
Fuse 13 - F/PMP - Hot in run or start
I've used 13 / Fuel pump for ages however it does seem to cycle power on the wideband when you start it up-- which as you talk about, prolongs the heatup cycle and how long until it starts giving data.
I just moved it over to 16/PCM to see if that gives me the result I want.
Don't use 23 / PCM B, which is "hot at all times"