running rich- still -

[jlagnese at massed.net]

---- Original message ----

  Date: Mon, 26 Nov 2007 09:49:18 -0700
  From: "Brandon Rogers" <brogers at terrix.com>
  Subject: RE: running rich- still -
  To: "'200 20v List'" <200q20v at audifans.com>
  >So I replaced the thermo switch/temp sender in
  the back of the head - no
  >change.
  >
  >Anybody ever had a Throttle Pos Sensor go bad and
  not throw a code?
  >
  >And I _think_ I'm only rich at idle and maybe on
  decel - does that shed
  >any light on the potential issue? Thats why I'm
  thining TPS now - maybe
  >its not telling the ECU to go into Decel and Idle
  mixture.....???????
  >
  >As a "reminder" - I have replaced within the last
  year or two-
  >FPR w/ new rubber vac line ~2 yrs ago
  >02 sensor
  >Thermo time/temp sender 11/07
  >had injectors serviced by RC Engineering 9/07
  >No leaks - pressure tested 11/07
  >checked vac line to FPR 11/07
  >Cap/rotor/plugs 4 yrs/20k miles old
  >IAT wiring renewed 11/07
  >
  >Should I check my fuel pressure?
  >
  >Any input appreciated -
  >
  >TIA-
  >
  >Brandon
  >'84 urquattro 20V
  >
  >
  >-----Original Message-----
  >From: Brandon Rogers [mailto:brogers at terrix.com]
  >Sent: Monday, November 19, 2007 1:51 PM
  >To: '200 20v List'
  >Subject: running rich- temp sender
  >
  >
  >Guys-
  >so as I still try to figure why I always get a
  very rich exhaust smell
  >wafting into the cabin when I come to stop - I
  tested the temp sender
  >(white two pin back of head)- Bentley says
  resistance should be
  >1500-3000 Ohms when cold (68F). Miine was 3500.
  Anybody had a temp
  >sender go bad - what happened? Anybody feel like
  getting crazy and
  >checking to see what value you get on yours? -
  check resistance across
  >the 2 pics when cold.
  >

  Just thinking, but I'm not too sure that it would
  be a problem about the resistance. Don't those go
  to 0 ohms when warm. It would be a brief time at
  3500.

  John
  >any thoughts appreciated
  >
  >Brandon
  >
  >
  >
  >
  >
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