ls1 engine surges and stalls
Thread Starter
Racer
Joined: Nov 2004
Posts: 265
Likes: 0
From: Angleton Tx
ls1 engine surges and stalls
My LS1 has been surging at idle for the past 2 weeks. The check engine light came on shortly after the problem started. Put a code reader to it and came up with the codes P0174 ( Fuel Trim bank two condition) and P0151 (Heated oxygen sensor bank 2 sensor 1 circuit condition). The engine is burning very rich and my gas mileage has suffered by about 40%.The surging has now transitioned to an occasional stall of the motor when the throttle is engaged. Replaced the MAF and the problem still exists. Could it be the IAC? By the way, coincidence or not the problem seems to have started around the time it snowed alot in my area. I even got stuck in the snow a few times and had to be pushed out after spinning snow all over the car. Could there be a problem dealing with excess moisture? Thanks for the help.
Last edited by prodadiv; Feb 28, 2010 at 12:39 AM. Reason: Forgot to mention that the engine was burning rich
Tech Contributor
Joined: Jan 2007
Posts: 19,401
Likes: 1,141
From: Dyer, IN
My LS1 has been surging at idle for the past 2 weeks. The check engine light came on shortly after the problem started. Put a code reader to it and came up with the codes P0174 ( Fuel Trim bank two condition) and P0151 (Heated oxygen sensor bank 2 sensor 1 circuit condition). The surging has now transitioned to an occasional stall of the motor when the throttle is engaged. Replaced the MAF and the problem still exists. Could it be the IAC? By the way, coincidence or not the problem seems to have started after it snowed alot in my area. I even got stuck in the snow a few times and had to be pushed out after spinning snow all over the car. Could there be a problem dealing with excess moisture? Thanks for the help.
