check engine on highway

[atticdog]

hi this is my first post here i got the url from over at maxima.org
well i have a 93 atx with y pipe and dynomax cat back replaced o2 sensors with the y
but when im on the highway at like 70 for about 40 miles the check engine comes on and off every few minutes and i feel a slight hesitation maybe a rich lean feeling anyone have any ideas?
thanx

 

[sdpatt]

If you are receiving the CHECK ENGINE light, an error code has been stored in the engine control computer. All you have to do is ask it what the code is by the method explained in the link below.

Test: http://www.dalidesign.com/hbook/eectest.html

Codes: http://www.dalidesign.com/hbook/3digit.html

In summary, place the jumper wire between the two terminals on the EEC TEST plug and its satellite plug and turn the ignition key to ON. Watch the CHECK ENGINE light blink out the codes. Refer to the 3-Digit Codes link on the provided site. I expect you will find an oxygen sensor not switching (rich/lean), but the only way to know for sure is to check the stored codes.

<small>[ March 14, 2002, 08:18 PM: Message edited by: sdpatt ]</small>

 

[atticdog]

Thanx ok the codes are 176,177
the o2 sensors are new
any ideas?

 

[sdpatt]

If you had followed the link to the code descriptions, you would have found the following:

176 (M) Oxygen sensor not switching - system is or was lean Left or Front HO2S - Fuel control

177 (M) Oxygen sensor not switching - system was rich Left or Front HO2S - Fuel control

It looks like you front bank oxygen sensor has failed. What brand did you install? I recommend using the Bosch 13223 or 15716 sensors for your 3.2L and NOT using the Borg Warner brand.

Scott

<small>[ March 14, 2002, 08:21 PM: Message edited by: sdpatt ]</small>

 

[atticdog]

a month ago i had it checked out and they sed those codes i just couldnt find the paper they also sed 1 running lean,running rich
2 clear codes and have not returend could not duplicate

at first they thought it was the o2 sensors but then they thought it might be somethuing else causeing them to act funny

ill find out what brand they are
thanx

 

[atticdog]

now its like hesitateing on thw highway and doesnt want to accelerate when i give it alittle gas i have to give it a good amount of gas then it downshifts to 3 to get it to got from like 65 to 75 then after a few minutes it seems better
any ideas?
maybe a bad O2 they are new

 

[sdpatt]

See my previous post.

Scott

 

[underdog1924]

Atticdog, where in MA do you live? Also where did you buy the O2 sensors? I believe that if you got them from AutoZone they are Bosch (that's what I have in mine). Do you remember what brand they are?

 

[SHOPhear95]

the same thing happens to me when I've been traveling on the highway for an extended time. My car starts running like crap also.

 

[atticdog]

i live in westport mass
im not sure what brand they are i didnt install them ill try to look at them to see

 

[HotBoxSHO]

My car had the same symptoms, it was a bad prug wire.