Bad O2 sensor with no CEL? what are the symptoms?

[rice400]

Usually if an 02 sensor is bad the car will run good cold and at wide open throttle only.

Topic

[JDM_Hatch99]

[quote]Quoted From college man: _x000D_
_x000D_
I use crc MAF cleaner. I have heard of people using brake clean._x000D_
no carb spray. don’t touch any of the wires with your hands. also_x000D_
air dry it before reinstall. Yes this could cause a performance issue._x000D_
if the

[EricTheCarGuy]

Did I miss something because I don’t recall reading anywhere what the year make and model was._x000D_
_x000D_
NEVER throw parts at something you don’t have evidence for unless you like spending money and putting parts on your car.

[JDM_Hatch99]

[quote]Quoted From EricTheCarGuy:_x000D_
_x000D_
Did I miss something because I don’t recall reading anywhere what the year make and model was._x000D_
_x000D_
NEVER throw parts at something you don’t have evidence for unless you like spending money and putting parts on yo

[college man]

have you checked mechanical timing? you may want to pull the_x000D_
timing cover and check the timing marks.

[EricTheCarGuy]

No I’m sorry I missed that, keep in mind it takes me all day to get through this forum sometimes._x000D_
_x000D_
With a 98 if you don’t have a check engine light on for the O2 sensor the sensor is working fine besides I don’t remember an O2 sensor causing the symptom

[JDM_Hatch99]

Quoted From college man: _x000D_
_x000D_
have you checked mechanical timing? you may want to pull the_x000D_
timing cover and check the timing marks.

_x000D_
_x000D_
well i did check the timing at the cam gears and they are lined up perfect with each other. i howe

[JDM_Hatch99]

[quote]Quoted From EricTheCarGuy:_x000D_
_x000D_
No I’m sorry I missed that, keep in mind it takes me all day to get through this forum sometimes._x000D_
_x000D_
With a 98 if you don’t have a check engine light on for the O2 sensor the sensor is working fine besides I don

[college man]

Heres a diagram of what the timing marks should look like._x000D_
my suggestion is to check everything. crank and cams._x000D_
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http://www.team-integra.net/forum/blogs … 3-teg.html

[Buggsy]

Just a quick thought. You’re looking at spending a lot of money on various parts because you don’t have a good direction to go in. Finding a mechanic that can do a simple tail pipe test would clear up a lot of your questions. you’d likely have to leave th

[EricTheCarGuy]

Honda ECU’s and fuel pumps hardly ever go bad and when they do there’s usually some other cause, aftermarket distributors go bad all the time in fact just do a search this forum is full of them.

[Bad_dude]

I agreed with Eric’s last post.

[JDM_Hatch99]

if a cat were dirty or clogged would it cause hesitation/power loss only when the car is warmed up or would it do it all the time?

[EricTheCarGuy]

It might do it more when it’s warmed up, it really depends on how badly it’s clogged.

[Nagy György]

If your car runs well when cold. And bad when it warms up, it could be the O2

[JDM_Hatch99]

Well I unplugged the o2 sensor today after the car was doing its normal bucking/hesitating after warm up._x000D_
_x000D_
Cant say yet whether or not it made a difference but im going to drive it for a few days with it unplugged to see any type of consistent change/im

[Author]

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