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-   -   [VIDEO] Big problem! Is it bad coils/plugs/sensor/injectors/gas? (http://legacygt.com/forums/showthread.php?t=196422)

DarkiSt 11-15-2012 02:01 PM

[VIDEO] Big problem! Is it bad coils/plugs/sensor/injectors/gas?
 
https://www.youtube.com/watch?v=R_D_PnVUzFw

Anyone know what's causing this problem? I'm waiting on a few parts (an ignition coil, 4 spark plugs and an air filter) but I'm not sure if those will solve it for sure. It wasn't anywhere near this bad before...At first I only noticed the car shaking like it was about to stall when I slowed down to around 5kmph to 10kmph but anything above that speed was fine. I stopped using the car for about 2 weeks while I was waiting on some parts to be shipped here (I'm in the Caribbean). I started the car again today and this is what's happening now.. it got a lot worse! Any ideas on how to begin solving this?

The CEL code is P0031 (Oxygen Sensor Heater Control Circuit Low (Bank 1 Sensor 1)) but this code popped up ever since I replaced my stock intake with a K&N typhoon.

What do you guys think is the problem here, given the symptoms shown in the video? The last part of the video is showing that the car isnt revving past ~2000rpm even though I'm almost flooring the gas.

BarManBean 11-15-2012 02:05 PM

take off the intake for starters. other than that I have no idea.

DarkiSt 11-15-2012 02:08 PM

I forgot to mention that I did take the K&N intake off and put the OEM airbox back to try to narrow down the list of possible problems. The video is with the OEM filter installed, not the K&N. I also sprayed a bit of MAF cleaner on the MAF sensor after putting the OEM filter back on since I think the K&N might have deposited a light layer of oil / dirt onto the MAF sensor.

Max Capacity 11-15-2012 03:06 PM

I wonder if you knocked or broke the Front O2 sensor wire messing around with the intake.

F1inspiredLGT 11-15-2012 03:14 PM

Quote:

Originally Posted by DarkiSt (Post 4160388)
https://www.youtube.com/watch?v=R_D_PnVUzFw

What do you guys think is the problem here, given the symptoms shown in the video? The last part of the video is showing that the car isnt revving past ~2000rpm even though I'm almost flooring the gas.


This sounds like the O2 sensor is dead. You can test the sensor on the car with an OHMs test, search YouTube for testing the O2 sensors. I've done it before and it's fairly easy to do.

Also, did you reset the ECU when taking out the K&N?


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