Wideband O2 question

Ceasar1010

Member
:
Mazdaspeed Protege 2003 and Miata STO 1997
My wideband 02 use to move and stay in the green a lot. Now its all the way left in the red --- flat out on the red and never moves. As soon as that happened my car started driving the poop. I checked all my pipes (Visual and wiggled them) and none of them have fallen off or got loose. Its not running smooth, almost feels like my MAF is unplugged.

Any suggestions? Its super cold outside and I am trying to get some Ideas in my head before I spend lots of time outside in 39degree weather (Im in texas - its cold to me)

Thanks
 
39* I wish it was that here.

Any cell light and what piggyback/programer are you running?
 
39* I wish it was that here.

Any cell light and what piggyback/programer are you running?

No piggy back and I have not got my CEL Codes yet. It happened this morning and I had to drive back home to get my wifes car. I guess that would really help out in trouble shooting. I saw the check engine light blink and then go solid yellow. Never seen it "blink" before. I guessed its bad so went home.

Its to cold for me, I dont like how houston can be COLD and Humid at the same time. Yuck
 
Probably a fuel issue then if it runs really lean and on a stock tune. Try resetting the ECU by unplugging the battery and prseeing the brake pedal a fuel times. Then hooking everything back up and run it around the block. If that doesn't help you're going to have to look into fuel pressure or airflow.
 
Just did some searching and a lot of the guys that have had a blinking CEL have had bad ignition coils. Might be something to look into as well. If the car isn't getting a good spark it will cut off the fuel so it doesn't just dump into the motor.
 
Sounds like a misfire, no problem with the wideband it is trying to show you there is a problem, lol.
 
Sounds like a misfire, no problem with the wideband it is trying to show you there is a problem, lol.

Well I guess it worked warning me. I turned around and went home because I don't want to break her. I did do a foolish this. I reset the battery before checking the CEL codes. /DOH!
 
Yeah you never want to reset the battery when you haven't diagnosed the problem.

My bad, I was in a hurry and as soon as I took it off I said "damn". Now I got to drive it and generate the error again or try to fix it without the error.
 
It sounds like im unbalanced, like the motor is lopsided. I took out the plugs and the far right one was wet with gas. The O2 is still pegged to the left in the red. Could I be working on 2 cylinders? or three? I need to work on it as much as I can today because I have to drive it tomorrow. I drove it as much as I could so far today and I haven't got my CEL codes back. Can anyone throw something at me to try to rest?
 
error is P303 - Misfire Cyl 3. Can someone help me in what cyl 3 is. Im going to work on it this weekend. I think I replaced the wrong coil pack. I replaced the left one.
 
Ok frustration is setting in. Not anything I can handle but man.

I replaced the Boots and wires, the plugs are new and gapped at .40 (Tripled checked) and even replaced the coils (Under warrantee) , and its still giving me P0303
I rotated the coils and still the same problem. I'm assuming #3 is the far right or the one to the left. So 1 2 3 4 or 4 1 2 3

I'm going to take it apart one more time and see if I can find something I missed.
I was driving one day and then all of a sudden it did this ... I have been driving the Pacifica for two weeks now and Im about to loose my mind!
 
Oh yea and my O2 meter is all the way to the left in red... never moves just stays red
 
The 3 pin plug to my coil is all broken , so I plugged them in diret and its still acting funny. I got p0303 again after I cleaned and checked everything. argh
 
Back