Missing 02 Sensor!?
#1
Missing 02 Sensor!?
Hey guys. I just picked up a 93 Accord EX Sedan. Its quite loud. It appears they removed the cat and replaced it with straight pipe, but used clamps (HUGE LEAK)...ugh! The flex pipe has a huge leak as well. The pre cat O2 sensor is missing. They have it plugged up and I don't think its going to come out to just put an o2 sensor there. My questions is should I replace the entire down pipe all the way and just weld up where the cat is? (I know its illegal) or is that o2 sensor that important? The car has a CEL I haven't had a chance to check it out yet. I am assuming its the o2 sensor or the cat. It runs pretty well but has a hesitation at low rpms. Its just a daily driver doesn't have to be perfect just want something thats get better gas mileage that my G35X (18.5) lol Any help would be awesome. Thanks guys.
#2
Honda-Tech Member
Re: Missing 02 Sensor!?
There is only 1 O2 on your car, replace it this probably the reason for the CEL. I would go to the local bone yard/ Ebay and pick up a used Down/flex pipe. As far as the cat goes i would replace it with an inexpensive direct replacement cat. I am not one for polluting. Here is a link to used Honda parts on Ebay http://stores.ebay.com/id=79528253&s...STRK:MEFSX:SST i use them all the time and have seen the down /flex pipes on there for a reasonable price.
#4
MM Gruppe B
Re: Missing 02 Sensor!?
Not sure if the 90-93 models used different manifolds/downpipes/flex pipes between the submodels. You can verify the numbers by going to Majestic Honda and looking up the various years/submodels.
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