cowboys647

I have a 99 and am using a brain built ms2. I have it all wired up but as i got an aem wideband i'm not positive how to wire it up. Should i use the stock o2 4 wire o2 and just cut and splice to replace it with the wbo2? I tried searching with not much luck.. Wiring isn't my best suit.. Thank you!

Techsalvager

Removed o2 sensor from car, install wideband sensor. Run sensor wires to wideband controller, connect wideband signal wire from controller inside to the o2 input wire. Probably best to put a splice into the stock o2 wire coming into the harness with and easy to remove connector. That way if you want to go back to the stock sensor you can just disconnect the wideband signal wire.

cowboys647

I connected it to where the stock o2 sensor was and splicedit in and it was getting power but wasn't giving me a reading. I wrote it the the megasquirt but the gauge went crazy..

Techsalvager

******* ADS

Pictures of what you did?

cowboys647

Pictures of how i have it wired up.

Off topic: Wiring the gm iat sensor, Do i just cut off the stock air temp sensor and use those two wires and then mount it in the same place? If so can i remove the maf at the same time?

Techsalvager

or you could just pull the stock iat sensor out and use it.

What in the world is going on there. Move your AEM wideband Gauge into the car. From the Gauge the 6 wires go to the wideband sensor though the firewall, There is a rubber grommet that can be dripped into and you can run the wires though it to the sensor from the gauge. The last 4 wires are power, ground, o2 output, serial output.

I don't know what you have going to the stock o2 sensor but you need to remove it and don't hook up anything to the stock connector, just leave it alone. Oh I see, yeah remove that, put the gauge inside and tap a 12v switched source for the power ( not the radio ) and just run the ground to the chassis, and do what I said before and splice into the stock o2 wire in the harness.

pusha

iTrader: (5)

Just unplug the MAF and follow the instructions for wiring the GM IAT sensor that are on DIY's Web site.

cowboys647

Now that you said that it makes perfect sense.... Going right now to do that!

pusha

iTrader: (5)

Hand holding is fine but don't ask anyone here to hold onto your *****.

cowboys647

haha ill remember that. Anyways got everything wired up and started the car. Wideband works, used stock iat sensor, and everything seems to be working. Car was pretty rough upon startup. First time with tuning so it definitely is a learning experience.

Techsalvager

make sure you check that timing is correct with whats in the megasquirt and whats on the crank pulley

tasty danish

iTrader: (9)

I'm not trying to be a dick, but seriously, that wiring job looks ghetto as hell. I hope that was a test fit and not how you actually wire things up. If you honestly don't see what's wrong with your pics, we can talk over how you can learn and do better, I'm just saying something because I want to help and not to come off as harsh.

cowboys647

Another question.. My car is running at %100 fuel load constantly. I know i probably have something set wrong.. Any insights?

tasty danish

iTrader: (9)

If you are running speed density (MAP sensor) fuel load is basically manifold pressure. You don't have a hose hooked up to your map sensor if it's reading 100%

cowboys647

Ah right you are Danish. Still pretty new at this so thanks!

cowboys647

Alright i'm back with another question. I had my car running the other night and was tuning but this morning i powered it on and my wideband settings were set back to narrowband and my gauge was blank. I wrote it to the controller again but after turning off the car it doesn't seem to save it. It is a aem wideband..

hustler

iTrader: (6)

You need to hook up with a local so they can save you from yourself.

hustler

iTrader: (6)

Usually this means the controller reset...but I doubt that happened. Are you closing DLL or whatever configures the LC-1 prior to powering the controller down?

cowboys647

I'm using tunerstudio if that is what you were asking and Sometimes i close it before and sometimes after. I didn't think that was an issue as long as i burned all my changes and already wrote the type of wideband to the ecu.

hustler

iTrader: (6)

Logworks, sorry. That program is seriously buggy. Make your changes, burn, close, unplug, and then you can say the WB is configured.