Stumped by TPI

[James Boughton]

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
> 
> Hi All,
> 
> I have a '88 5.7 Chevy with TPI running in my Sebring MX. The wiring
> harness
> is an old Street and Perf. speed density job using a '7170
> ECM.(V6-Fiero).
> The Problem:
> The car runs extremely rich all the time but mostly under 2500rpm.
> Motor is bone stock. No codes set. Plenty of O2 crosscounts.No vacuum
> leaks.
> Map voltage is 1.2 at an idle. Is this normal?
> Have tried 3 different proms, S+P, Hypertech etc.
> Is anyone else running this setup? (fat chance)
> Should I just bite the bullet and update to a newer harness/ECM.
> Suggestions, comments flames are welcome.
> Regards,
> Jim Santoro   sebring at vnet.net
> 
>