I believe when testing at the DPR the meter movement should "pulsate" around an average reading. This indicates a healthy O2 sensor. A steady reading indicates a bad sensor. You didn't mention this. ECU tests in the bentley also can identify a bad O2 sensor.
Rich Blake -----Original Message----- From: Patrick Austin <[email protected]> To: [email protected] <[email protected]> Date: Friday, August 24, 2001 4:57 PM Subject: Update: >So, if I disconnect the coolant temp sensor, the car runs pretty well. It >stubles a bit just off idle, but at least it runs. This is with the DPR >plugged in. > >I also checked the values at the DPR. With the coolant temp sensor >disconnected, it reads about 3.4mA. With it plugged in at idle, it reads >weird numbers...-16mA or some nonsense. The coolant temp sensor itself >seems to be reading OK values, though. At 200 degrees oil temp, it read >240 ohms...when it was cold it read about what it should be for cold >coolant. > >Does this mean that there's a wiring problem with the coolant sensor? A >problem with the ECU? If I disconnect the coolant temp sensor, does the >car just go into it's cold-start mode because it reads that as an infinite >resistance from the coolant sensor? It smelled like it was running WAY >rich without the coolant sensor. > >What's the easiest way to test the O2 sensor? Just read the voltage off of >it directly? > ************** > Patrick Austin > [email protected] > (617)782-9115 > ************** >_____________ >List Sponsor: http://www.netsville.com >To remove yourself from this list, send mail to [email protected] with 'unsubscribe a2_16v' in the body of your message >See us on the web at http://www.a2-16v.com >Visit the 16V Homepage at http://www.gti16v.org > _____________ List Sponsor: http://www.netsville.com To remove yourself from this list, send mail to [email protected] with 'unsubscribe a2_16v' in the body of your message See us on the web at http://www.a2-16v.com Visit the 16V Homepage at http://www.gti16v.org
