RE: O2 Sensor Issue

From: Ray Block (BPracing@wowway.com)
Date: Mon Jul 18 2011 - 17:24:34 EDT


> -----Original Message-----
> From: Gary Hedlin
>
> Anyone here think that putting on a throttle body that's a bit too big
> would
> cause the PCM to throw codes? I put a 52mm F&B on the 5.2 I put in the 98

> (the 340 I was planning on using wasn't built right), and it's giving me
> two
> codes for both 02 sensors reading high. Kinda thinking since it's both
> sensors that it's getting too much air.
>
> Gary

That's not really possible Gary. The throttle body doesn't blow air into
the engine; the engine sucks what it needs, no more. I'd think a vacuum
leak is a much more likely culprit.

FWIW, I use a 53mm TB on my 318.

Ray
http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html

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