**Help** Check engine light assistnace - MissFire??!
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,519
Likes: 7
From: Indy
**Help** Check engine light assistnace - MissFire??!
Alright guys, I am having some weird behavior from the beast the past couple of days.
Behavior:
-Idles like it's Misfiring
-While driving it stumbles, and sounds horrible
-Coolant Temp is not going over 165 degrees
Codes:
P0030 - Heated Oxygen Sensor (H02S) Heater Control Circuit Bank 1 sensor 1
P0053 - Heater Resistance Bank 1 Sensor 1 (PCM)
P0132- Heated Oxygen Sensor (H02S) Circuit High Voltage Bank 1 sensor 1
P0135 - Heated Oxygen Sensor (H02S) Heater Performance Bank 1 Sensor 1
P0137 - Heated Oxygen Sensor (H02S) Circuit Low Voltage
P0172 - Fuel Trim System Rich Bank 1
P0300 - Engine Misfire Detected
After I put about 5 miles on the car it acts PERFECT, and the coolant temp goes right back to 185 degrees as it should...... What is the deal?
Mods: Headers (installed for about 10 months now), 165 degree thermostat
THANKS SO MUCH FOR YOUR HELP!
Behavior:
-Idles like it's Misfiring
-While driving it stumbles, and sounds horrible
-Coolant Temp is not going over 165 degrees
Codes:
P0030 - Heated Oxygen Sensor (H02S) Heater Control Circuit Bank 1 sensor 1
P0053 - Heater Resistance Bank 1 Sensor 1 (PCM)
P0132- Heated Oxygen Sensor (H02S) Circuit High Voltage Bank 1 sensor 1
P0135 - Heated Oxygen Sensor (H02S) Heater Performance Bank 1 Sensor 1
P0137 - Heated Oxygen Sensor (H02S) Circuit Low Voltage
P0172 - Fuel Trim System Rich Bank 1
P0300 - Engine Misfire Detected
After I put about 5 miles on the car it acts PERFECT, and the coolant temp goes right back to 185 degrees as it should...... What is the deal?
Mods: Headers (installed for about 10 months now), 165 degree thermostat
THANKS SO MUCH FOR YOUR HELP!
SUBVETTE
Joined: Jul 2006
Posts: 3,841
Likes: 93
From: San Diego CA
Sounds like a failed O2 sensor. Could be intermittent failure that clears when warm. I'd also look at the wire extension going to the sensor to make sure your headers haven't cooked it.
Last edited by SUB VETTE; Aug 23, 2012 at 06:40 PM.
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,519
Likes: 7
From: Indy
Thanks for the information! The first thing I did was look for cooked wires, and luckily they are perfectly fine. I have ordered a new O2 sensor from GM however, it doesn't get in untill Wednesday.... My Vet is my Daily, so my wife has to drive me around :P
Thanks again!
Instructor
Joined: Jan 2005
Posts: 202
Likes: 2
From: Enola PA
I had a similar issue and found that one of the plugs had a small crack. It happened while having the headers installed. Sounded like it had a cam in it and broke up at lower RPMs under load. Just a thought....
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,519
Likes: 7
From: Indy
Thread Starter
Drifting
Joined: Mar 2011
Posts: 1,519
Likes: 7
From: Indy
OK - I was able to get my hands on a o2 sensor, and... wait for it... wait for it.....
FIXED THE ISSUE!
Something so simple made my car run like it was on 4 cylinders! Thanks everyone for your help, time, and consideration!
FIXED THE ISSUE!
Something so simple made my car run like it was on 4 cylinders! Thanks everyone for your help, time, and consideration!
