Problems with the car after header install
Thread Starter
Instructor
Joined: Jun 2003
Posts: 102
Likes: 0
From: Indianapolis Indiana
Problems with the car after header install
I just installed Lg long tube with the off road xpipe. i bought the 02sims and after the install it ran fine no codes till about 12 miles later. It started to sputter and doesnt want to run when im just cruisin. It runs pretty good at WOT. I checked the codes and it came up with these three. Im not sure what they are. Can anyone shed some light one the problem? The codes are Po 300h, P1133 HC, and P1153 HC.
Thanks.
Dan
Thanks.
Dan
Race Director
Joined: Oct 2002
Posts: 16,477
Likes: 26
From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
P1133 and P1153 are codes for the front 02 sensors.
P0300 is an engine misfire code.
Since you said they are LG's...I'm going to take a wild guess here that the front 02 sensor wiring got crossed. The left wire harness goes to the left header. The right harness goes to the right header.
Due to the orientation of the 02 sensors on LH headers, many people make the mistake of crossing the harnesses, and doing so will produce exactly the symptoms you describe.
P0300 is an engine misfire code.
Since you said they are LG's...I'm going to take a wild guess here that the front 02 sensor wiring got crossed. The left wire harness goes to the left header. The right harness goes to the right header.
Due to the orientation of the 02 sensors on LH headers, many people make the mistake of crossing the harnesses, and doing so will produce exactly the symptoms you describe.
Burning Brakes
Joined: Feb 2004
Posts: 1,246
Likes: 2
From: McKinney TX
For the P0300....go back and double check all your wires first. Make sure they all snap in. 2 snaps for the coils and one on the plug. If they all do, then take a look at the plugs themselves. Did they remove them when they installed the headers? Was there a chance one of them got dinged or cracked on the install....
For me, I just forgot to seat the 7 cyl plug wire correctly. Hope it works out...
For me, I just forgot to seat the 7 cyl plug wire correctly. Hope it works out...
Le Mans Master
Joined: Oct 2002
Posts: 6,772
Likes: 1
From: Tampa FL
Originally Posted by Willfulone
I bet the 02 sensors are crossed...
Good Luck
Peace
Willfulone
Good Luck
Peace
Willfulone
.. which would explain the rough while cruisin .. the computer is reading it as either too lean or too rich and changing the fuel accordingly.
