Why is my car surging?
This is a discussion on Why is my car surging? within the General Help forums, part of the LSx Technical Help Section category; Originally Posted by Spaz i meant the wire... and in would it be possible you connected the front o2 sensor ...
08-12-2008, 08:43 AM #21
08-12-2008, 08:44 AM #22
- Join Date
- Aug 2005
- Thornton, CO
Red Tint Jewelcoat
- 2008 Trailblazer SS
08-12-2008, 08:57 AM #23
08-12-2008, 09:41 AM #24
- Join Date
- Nov 1999
- over here...
D  V D
- 1999 trans am
08-12-2008, 12:50 PM #25
08-14-2008, 07:06 AM #26
- Join Date
- May 2006
- DEW TEXAS
- 2002 LS1 AUTO
have a 2002 ls1 it has erratic idle and the engine shuts down pls help
08-14-2008, 07:15 AM #271998 Trans Am WS6 SGM
Lid, Pro 5.0, WS6 Short Stick, LS7 Clutch, TB Bypass, Detroit TrueTrac, Poly Mounts, Bilstein Shocks, LS6 Intake, SFCs, CTS-V Brake Upgrade, STB, Nitto 555's. SS Longtube Headers and True Duals w/ H pipe and Magnaflows. Tuned by Harris Speed Works. 341.4WHP/346.1 lb/ft.
08-14-2008, 07:19 AM #28
If it started surging right on startup it has nothing to do with the O2's, because the PCM doesn't even start monitoring the O2's until the engine is running in closed loop operation (warmed up).
08-14-2008, 12:50 PM #29
08-14-2008, 12:57 PM #30
May need to get a code kick out and see what codes if any its' kicking to really know. BIT data will lead you to the problem. Aircraft are the same way. Just need to interpret the codes. Good Luck.
08-14-2008, 02:27 PM #31
08-14-2008, 02:42 PM #32
Sounds like you may have gotten a bad O2 sensor. I had one bad right from the manufacturer. Not sure if that helps. Would be a pain in the ass chasing that down.
08-16-2008, 04:00 AM #33
This is from the service manual:
Monitor the Heated Oxygen Sensors (HO2S) voltages. The Heated Oxygen Sensors (HO2S) should respond quickly to different throttle positions. If the sensors do not respond, inspect the HO2S for silicon or other contaminates from fuel or the use of improper RTV sealant. The sensors may have a white powdery coating and result in a high but false signal voltage (rich exhaust indication). The PCM then reduces the amount of fuel delivered to the engine causing a severe driveability condition. For more information, Refer to Information Sensors/Switches Description .
Inspect the MAF sensor connections. Repair or replace terminals. Refer to Repairing Connector Terminals in Wiring Systems.
So I'm thinking Mr.Lous has it pegged: don't do anything else to it till you put some miles on it.
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