Stumped by TPI

Garfield garfield at pilgrimhouse.com
Wed Dec 17 07:43:03 GMT 1997


On Tue, 16 Dec 1997 17:59:58 -0800, "James Boughton" <jpb01 at ibm.net>
wrote:

>If you are getting O2 crosscounts and you are running rich it sounds like
>you have an exhaust leak.
>
>Jim Boughton
>jpb01 at ibm.net
>
>----------
>> From: Jim Santoro <sebring at vnet.net>
>> To: diy_efi at efi332.eng.ohio-state.edu
>> Subject: Stumped by TPI
>> Date: Tuesday, December 16, 1997 2:59 PM
>>
>> Map voltage is 1.2 at an idle. Is this normal?

Hey Jim. Hey Jim. Hmmm, is there an echo?

Sorry I'm late, guys. Heh. One of those very rare occasions when I can
contribute somethin.

Anyway, YES, 1.2V is what you'd get with around 18-20"Hg of vacuum, a
very plausible MAP value for a healthy engine at idle. Normal, yup.

I think JimB's conjecture sounds pretty astute. O2 getting in the
exhaust, but not from the combustion chambers.

Garfield

P.S. We all love a mystery. Be sure and let us know what it REALLY was
once you find out, OK?



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