Question about 1996 Isuzu Trooper

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O2 Sensor Problems-1996 Isuzu Trooper

I just purchased a 1996 Trooper. It did not pass the emissions inspection due to two O2 sensors having ''low voltage.'' One is is Bank # 1 and the other in Bank# 2. Where are they located and what is entailed in the home repair guy (ME) replacing them? Thanks.

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  • Brent Quicksword Jul 20, 2009

    Great, thanks. Question: Why clean around the throttle plate/body? Likely it is dirty there, but does that cause emission probs?

  • Brent Quicksword Jul 20, 2009

    Great idea! But I think that I am still going to need to replace the sensors? My code checker says that they are bad. BTW, how many O2 sensors are there? Just two? Where are they on the exhaust pipe? Thanks again.

  • Anonymous Mar 18, 2014

    cuts out at 65mph when warm

  • Anonymous Mar 23, 2014

    Power trian code 0401, and 0440

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They are very easy to replace .
all you need to do is go to autozone and get the right parts.
then you will find the old parts on the exhaust system.
unplug the first one you find and unscrew it from the exhaust and refit the proper replacment part.plug wire back in.thats all you will need to do on the second one also.after that your done.ask auto zone after that to reset your codes for free with the code checker.then get a can of carb cleaner and spray out the throttle body of all the black carbon around the throttle plate.use a clean rag only.make sure its clean around the plate.
thewn fill your gas tank with supperunlead dont get the crappy gas any more cause it causes the carbon to build up.plus you will get better gas mileage.now your ready for an inspection sticker.
hope this helps
keep me posted
jm

Posted on Jul 20, 2009

  • joel mitchell
    joel mitchell May 05, 2010

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Listen go to any hard ware store buy a can denatured alcohol and pour it in the tank then go test it again at emission and I guarentee you will pass its not right but but in todays world it not paying to be honest

Posted on Jul 20, 2009

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