Question about 1991 Dodge Ram 150

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I recently put headers on my 318 and didn't reattach the o2 sensor because there was no plug on the header. could this be the reason my truck now misses?

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Ya you will need to install the 02 sensor ,, you can buy the adaptor threw a place like summit racing and it will need to be welded on to the header.

Posted on Jul 15, 2010

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How to install headers on a 2001 chevy 4.3


You are wanting to put headers on a Blazer? Power to ya, dude! I doubt if anyone can tell you how to do it other than unbolt the existing manifolds and bolt the headers in....hope they fit...

Have you thought about what you are going to do with the REST of the exhaust system? Like the O2 sensors, catalytic converter, etc.? Install headers because it sounds cool and all your buddies will be impressed with all the "power" it gives your Blazer...only to totally mess up your fuel control and have it run like ****???

I don't get it.....

Good luck

May 11, 2012 | 2000 Chevrolet Blazer

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I ordered BBK full length headers for my 2007 SRT8 6.1L Hemi Charger. Will they bolt up to OEM specs and have 02 sensor slots just as the stock headers do. Do I need to modify anything or get additional...


Should bolt to the head the same maybe go to studs in engine if possible. The O2 sensor needs to be inthe same distance fromthe head as before. If the sensor area needs to be removed from your system to put in the headers then drill a hole in the collector area and weld in a nut, then screw in the sensor as before

Jun 07, 2010 | 2007 Dodge Charger SRT8 Sedan

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O2 Sensor wires have been clipped? Why?


If the truck is fuel injected and probably is the aftermarket headers are sending a signal to the computer and feeding more fuel to the engine fuel is controlled by the intake and exhaust.as for the o2 sensors you will be fine without them they only turn on your engine light when it
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Jan 13, 2010 | 1994 GMC Yukon

1 Answer

02 censor


Your car should have two O2 sensors. One will be located after your catalytic converter. The other one should be located before your catalytic converter somewhere between your headers and your cat. Rarely, on some vehicles, there's a 3rd O2 sensor which is located also somewhere between the catalytic converter and the headers.

Oct 29, 2009 | 2004 Chevrolet Impala

1 Answer

How many o2 sensors are there?....my check engine light has been on for quite some time and thinking of replacing... my truck runs lean...


Your car should have two O2 sensors. One will be located after your catalytic converter. The other one should be located before your catalytic converter somewhere between your headers and your cat. Rarely, on some vehicles, there's a 3rd O2 sensor which is located also somewhere between the catalytic converter and the headers.

Your check engine light may not be pointing to bad O2 sensors. The light can mean anything from a loose/faulty gas cap to a transmission issue.

This light comes on when the computer detects a fault of some sort in its diagnostic tests. If it keeps detecting this issue, the light will remain on. If the light turns off, then it has detected that the issue may no longer be present.

In order to find out what the exact reason was for your light, You need to have your car computer scanned to retrieve the code that the computer would have stored when the light triggered. Most garages will do this free of charge. The code will tell you what may have caused the light to initially turn on.

Oct 29, 2009 | 1999 Toyota Tacoma PreRunner

1 Answer

I want to install a header for my 2005 accent i have a o2 sensor concern


You can drill a hole to the down pipe and weld in a nut with the same size thread as the O2 sensor. make sure the nut is stainless and try to have it close as possible to the header's collector. You can also drill it to the header too as close to the header collector's, your preference. Good luck and hope this helps. keep me posted and be glad to help.

Jun 11, 2009 | 2001 Hyundai Accent

1 Answer

I have a 1988 ford mustang 5.0 efi. I want to put an after market exhaust on it, How do I put my O2 sensors on it?


The O2 sensors are mounted into the headers. If by aftermarket exhaust you mean a cat-back exhaust system with midpipes and mufflers, then the O2 sensors are a non-issue - they won't be touched. If you are doing cat-back, headers, and maybe high-flow cats, the O2 sensors will just screw directly into the new headers - they'll be set up to receive them.

Apr 21, 2009 | 1988 Ford Mustang

1 Answer

I have a 2002 Z28 Camaro that I am currently trying to get to pass emissions inspection. I have just replace both upstream O2 sensors, and I am still getting a P1133 code. I cant figure out the problem,...


P1133 - Insufficient Switching on a Pre-Cat sensor, Bank 1 Sensor 1
Is the exhaust stock? or do you have long tube headers?? The long tube headers cause the heat-up time on the o2s to be longer (causing the switch time to take longer (p0133/p0155)).

Otherwise - insufficient switching of the o2...exhaust leak possibly near the sensor... sometimes a blown head gasket can cause this code too.

Thanks for using FixYa - a FixYa rating is appreciated for taking the time to answer your FREE question.

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2 Answers

O2 sensor?


The O2 sensor is located in the exhaust pipe prior to the catalytic converter. You'll have to get under the vehicle to see it or replace it.

Feb 23, 2009 | 1992 Pontiac Grand Prix

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