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Noah930's Avatar
Join Date: May 2005
Location: Los Angeles
Posts: 13,826
O2 sensor & surging

Earlier this week I posted a question about a free-dangling wire in my engine compartment, which has been identified the O2 sensor.

What's this wire?

I replugged it back together (the air pump isn't connected, BTW). However, I noticed a mild surging when driving at a steady throttle. Kind of like being on a large boat/ship, and feeling the swells of the ocean. Maybe not even noticeable to a passenger, but noticeable to me, with my foot on the accelerator. I unplugged the O2 sensor, and the surging went away.

So my question: why is this happening, and am I better off just running the car with the O2 sensor disconnected?
1987 Venetian Blue (really looks like grey) 930 Coupe
Old 08-25-2007, 07:01 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
Join Date: Sep 2000
Location: Maryland
Posts: 861
You need to have your CO adjusted... Someone unplugged it and turned the CO up to much. Buy a Gunson gas analyzer and do it yourself. I set mine to 3%with headers and no cat.
16 VW Touareg
05 Porsche Cayenne S
87 Porsche 930
84 VW Rabbit GTI
Old 08-25-2007, 08:12 AM
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