oxygen sensor
06-26-2009, 12:33 PM
#3
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Year: 87
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Engine: 4.0 I6
I would recommend a Wrench. Got to be one of the easiest sensors to change out.
Just get down there and take a look should be pretty self explanatory from there.
Just get down there and take a look should be pretty self explanatory from there.
06-26-2009, 01:31 PM
#7
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Year: 1988
Model: Cherokee
Engine: AMC242
The new sensor should come with some copper-based anti-seize, check before you leave the parts house. If it does not, tell them to get it out of another box (I haven't seen a sensor that didn't ship with the stuff in twenty years or so...)
The hex is 7/8" (standardised, they're also all an M18-1.5 thread...) and you can get an "Oxygen Sensor Socket" - which is an extra-deep 7/8" socket with a slot milled in the side to clear the wiring.
The socket makes the job easier. Remove the sensor when warm, as it comes out easier that way.
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06-26-2009, 01:51 PM
#8
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Year: 1990
Model: Cherokee
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No.
The new sensor should come with some copper-based anti-seize, check before you leave the parts house. If it does not, tell them to get it out of another box (I haven't seen a sensor that didn't ship with the stuff in twenty years or so...)
The hex is 7/8" (standardised, they're also all an M18-1.5 thread...) and you can get an "Oxygen Sensor Socket" - which is an extra-deep 7/8" socket with a slot milled in the side to clear the wiring.
The socket makes the job easier. Remove the sensor when warm, as it comes out easier that way.
The new sensor should come with some copper-based anti-seize, check before you leave the parts house. If it does not, tell them to get it out of another box (I haven't seen a sensor that didn't ship with the stuff in twenty years or so...)
The hex is 7/8" (standardised, they're also all an M18-1.5 thread...) and you can get an "Oxygen Sensor Socket" - which is an extra-deep 7/8" socket with a slot milled in the side to clear the wiring.
The socket makes the job easier. Remove the sensor when warm, as it comes out easier that way.
06-26-2009, 05:14 PM
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On RENIX? No. You can if you want to make sure you're perfectly safe (OK - as safe as you can get. Mechanical work is inherently dangerous at some level - metal is harder than you are...) but there are no high-current leads or signals in that area, and you don't have to wait for the ECU to "relearn" that it has a new HEGO. RENIX adapts from programme everytime it starts running anyhow.
06-26-2009, 07:15 PM
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On RENIX? No. You can if you want to make sure you're perfectly safe (OK - as safe as you can get. Mechanical work is inherently dangerous at some level - metal is harder than you are...) but there are no high-current leads or signals in that area, and you don't have to wait for the ECU to "relearn" that it has a new HEGO. RENIX adapts from programme everytime it starts running anyhow.
Thanks great to know
05-22-2015, 09:11 PM
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On RENIX? No. You can if you want to make sure you're perfectly safe (OK - as safe as you can get. Mechanical work is inherently dangerous at some level - metal is harder than you are...) but there are no high-current leads or signals in that area, and you don't have to wait for the ECU to "relearn" that it has a new HEGO. RENIX adapts from programme everytime it starts running anyhow.
Does that mean if I buy a header that does not have O2 threads, that I can just unplug them and be fine? Has anyone else encountered this?
05-23-2015, 05:26 AM
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Welcome to the forum! You have just revived a six year old post!lol. Good rule of thumb is to check the date and if it's old, start a new post. Now on to your question. In order to answer accurately you need to provide your Jeep info, year, trim level, engine type etc. There are a couple of variants on exhaust, some with 4 O2 sensors and some with 2. You can't leave them unplugged, your engine will not run well without the data from the sensors. You need to buy a header designed for your year. Post up your details and folks will dial you in...
05-23-2015, 12:10 PM
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Year: 90
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Welcome to the forum! You have just revived a six year old post!lol. Good rule of thumb is to check the date and if it's old, start a new post. Now on to your question. In order to answer accurately you need to provide your Jeep info, year, trim level, engine type etc. There are a couple of variants on exhaust, some with 4 O2 sensors and some with 2. You can't leave them unplugged, your engine will not run well without the data from the sensors. You need to buy a header designed for your year. Post up your details and folks will dial you in...
Ha! I guess that would help, huh? I asked this question in a different thread (that you and cruiser replied to) and basically got the info I was looking for, but its a 90 laredo 4.0 4x4, only one O2 sensor above the downpipe flange. sorry I didnt realize there was a statute of limitation on threads. I just thought everyone got tired of answering O2 questions.....back in 2008
05-23-2015, 12:15 PM
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Ha! I guess that would help, huh? I asked this question in a different thread (that you and cruiser replied to) and basically got the info I was looking for, but its a 90 laredo 4.0 4x4, only one O2 sensor above the downpipe flange. sorry I didnt realize there was a statute of limitation on threads. I just thought everyone got tired of answering O2 questions.....back in 2008
05-23-2015, 12:42 PM
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right, so either try to order the correct year and return the current one or try to get a downpipe that has the spot for the sensor. choices choices!