O2 Sensor problem after FI LTH install

MattP725 · 12-05-2011, 08:56 AM

I'd start with resetting the ECU but after that I would check the lengthened wires to make sure they are securely soldered and wrapped. Sounds like a simple signal issue. FYI you are always going to throw codes with LTHs. Get a tune to disable them if you don't want it (that is what I did).

F.I. Inc. · 12-05-2011, 11:28 AM

Quote:

Originally Posted by MattP725

I'd start with resetting the ECU but after that I would check the lengthened wires to make sure they are securely soldered and wrapped. Sounds like a simple signal issue. FYI you are always going to throw codes with LTHs. Get a tune to disable them if you don't want it (that is what I did).

This advice is not (entirely) correct. Good advice in the first part of what you wrote as far as inspecting the wires.

On the second part you are not correct. You should not throw any codes with our headers. When installed properly, there should be NO CEL light or codes.

Thanks, Tony

F.I. Inc. · 12-05-2011, 11:32 AM

Scott,

Thanks for the call this morning. I am sure once the wires are taken apart and then soldered back together you should be fine. Since it is an issue only on one side, I am quite certain it is just an installation issue.

Call me back if you need anymore advice.

Lastly, I look forward to getting your exhaust out to you so you can enjoy it with our headers...

Thanks,

scott982 · 12-05-2011, 08:03 PM

After another phone conversion with Tony I believe we have solved the problem. The mechanic used an impact to remove the demon bolts and the vibration destroyed 2 of my o2 sensors.

Quote:

Originally Posted by F.I. Inc.

Scott,

Thanks for the call this morning. I am sure once the wires are taken apart and then soldered back together you should be fine. Since it is an issue only on one side, I am quite certain it is just an installation issue.

Call me back if you need anymore advice.

Lastly, I look forward to getting your exhaust out to you so you can enjoy it with our headers...

Thanks,

Thank you so much for all the help today. I can't wait for the catback to get here.

F.I. Inc. · 12-05-2011, 09:56 PM

Quote:

Originally Posted by scott982

After another phone conversion with Tony I believe we have solved the problem. The mechanic used an impact to remove the demon bolts and the vibration destroyed 2 of my o2 sensors.

Thank you so much for all the help today. I can't wait for the catback to get here.

I will overnight those new wires out tomorrow. You live and you learn man. I had to learn the hard way a while back for the same thing. I ended up buying that customer a new sensor. As we all know, they are not cheap for this car!

Tony

scottIN · 12-06-2011, 04:18 AM

Quote:

Originally Posted by F.I. Inc.

I will overnight those new wires out tomorrow. You live and you learn man. I had to learn the hard way a while back for the same thing. I ended up buying that customer a new sensor. As we all know, they are not cheap for this car!

Tony

So I assume the solution to this is to pull the O2 sensors before you start disassembly?

F.I. Inc. · 12-06-2011, 09:03 AM

Quote:

Originally Posted by scottIN

So I assume the solution to this is to pull the O2 sensors before you start disassembly?

You do not need to pull the manifold sensors before you remove the stock cats. You just cannot use impact tools on the cat bolts. I never do for this reason.

When I install the headers I pull the sensors after I remove the cats. I find the front sensors easier to get to with the cats out of the way.

Thanks, Tony

wind.zero · 12-06-2011, 05:26 PM

Quote:

Originally Posted by F.I. Inc.

I will overnight those new wires out tomorrow. You live and you learn man. I had to learn the hard way a while back for the same thing. I ended up buying that customer a new sensor. As we all know, they are not cheap for this car!

Tony

This my friends in excellent customer service.

OP
GL solving your problem. Sorry you have to get new 02 sensors.

Peppers · 01-20-2012, 06:12 PM

After 10k miles on my headers I just through the same codes listed below. Tony how should I go about fixing this issue?

12-05-2011, 11:32 AM	#3 (permalink)
F.I. Inc. The370Z.com Sponsor Join Date: Feb 2009 Location: Simi Valley, CA Posts: 2,989 Drives: 2010 GT-R/2007 F-250 Rep Power: 685	Scott, Thanks for the call this morning. I am sure once the wires are taken apart and then soldered back together you should be fine. Since it is an issue only on one side, I am quite certain it is just an installation issue. Call me back if you need anymore advice. Lastly, I look forward to getting your exhaust out to you so you can enjoy it with our headers... Thanks, __________________ *Follow us on Facebook: Fast Intentions Inc.* Phone: (805) 522-FAST (3278) Email: tony@fastintentions.com www.fastintentions.com "FUELED BY PASSION"

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
K&N Typhoon Install problem	VaGntlmn	Intake/Exhaust	55	06-26-2012 04:23 PM
Oil Cooler install solves the problem?	spearfish25	Nissan 370Z General Discussions	26	01-03-2012 06:49 PM
Oil pressure sensor install	binto100	Engine & Drivetrain	1	05-24-2010 05:03 PM
Kenwood DNX-6960 Install Problem, Speaker Issues	spearfish25	Audio & Video	5	04-20-2010 09:20 PM
Backup Sensor Install on Long Island	blair	Exterior & Interior	1	04-30-2009 11:12 PM

12-05-2011, 08:56 AM	#1 (permalink)
MattP725 A True Z Fanatic Join Date: May 2011 Location: Toms River, NJ Posts: 1,904 Drives: 2010 40th Rep Power: 16	I'd start with resetting the ECU but after that I would check the lengthened wires to make sure they are securely soldered and wrapped. Sounds like a simple signal issue. FYI you are always going to throw codes with LTHs. Get a tune to disable them if you don't want it (that is what I did).

01-20-2012, 06:12 PM	#9 (permalink)
Peppers Base Member Join Date: Mar 2011 Location: Texas Posts: 94 Drives: 2009,370Z, Blue,6pd Rep Power: 14	After 10k miles on my headers I just through the same codes listed below. Tony how should I go about fixing this issue?