Weird O2 reading.

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Apr 21, 2003 | 11:40 AM

Loco

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From: San Antonio, TX

Weird O2 reading.

I Atapped a friends car and his O2s (bank 1 and 2) were in the .05x-.06x (not a typo) range and he had 4 deg of KR. Why are the O2s reading way too lean? Hes running stock manifolds and a descreened MAF. I rode with him and his car feels very sluggish. Any ideas? Thanks.

Apr 21, 2003 | 11:57 AM

jaywoo

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From: Sherwood, AR

Re: Weird O2 reading.

Was this at WOT? Also, was it B1S1 and B2S1?

Apr 21, 2003 | 02:56 PM

Loco

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From: San Antonio, TX

Re: Weird O2 reading.

It was WOT and it was B1S1 and B2S1.

Apr 21, 2003 | 02:57 PM

Loco

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From: San Antonio, TX

Re: Weird O2 reading.

Also hes running high 13s @ 102 with no wheel spin on DRs with a Yank converter so something isnt right.

<small>[ April 21, 2003, 03:00 PM: Message edited by: Loco ]</small>

Apr 21, 2003 | 07:26 PM

jaywoo

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From: Sherwood, AR

Re: Weird O2 reading.

That is incredibly lean if it's accurate. What do the LTrims look like at partial throttle?

Apr 21, 2003 | 08:12 PM

ToplessTexan

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From: Murphy, TX

Re: Weird O2 reading.

I'd be looking at things like fuel filters, fuel pressure, etc. What do things look like at lower RPM?

Apr 21, 2003 | 09:08 PM

01redws6ta

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From: jonesville, MI

Re: Weird O2 reading.

The knock retard will also make it run a little sluggish. Is it spark knocking at higher RPM's?

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Apr 21, 2003 | 11:38 PM

ToplessTexan

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Joined: Jan 2002

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From: Murphy, TX

Re: Weird O2 reading.

Looks like it's working it's *** off trying to get fuel. Also sounds like both banks are behaving the same. Check pressure and filter.

Did it start all at once or did it just kind of creep up on him?