RE: Cheap Air/Fuel ratio meter and sensor for L-series

[geordie]

I built the $20 kit and it's pretty crappy. Not only could it sense the o2 reading, It seemed to also be able to sense when my hand was near the circuit board, or the wire running to the o2 sensor..... Use it as a guide only!!!!   All these o2 meters do is measure the voltage produced by the sensor, the sensor has a platinum rod inside which produces a voltage when hot and will give off between 0 and 1 volt depending on how much oxygen is present. Ideal o2 conditions are around 0.7 volts. They can only detect a very narrow range, like 11:1 thru to 15:1 or something. A typical car unit is around $80 to $150 brand new.   If you want accurate results, you need a wide-band o2 sensor like they use on the real o2 tuning meters, the wide-band sensor can detect a larger range of readings and is far more accurate. These cost a hell of a lot more than the narrow band type. Don't quote me but I think they are $400 to $700 just for the sensor.   -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of mark krawczuk Sent: Friday, 6 August 2004 12:21 AM To: [EMAIL PROTECTED] Subject: Re: Cheap Air/Fuel ratio meter and sensor for L-series hi,  might  pay to get  a 3 wire  ego sensor from a ea falcon , the  heating element will make the actaul sensor. start reading better,sooner, than waiting for the exh to bring it up to operating  specs. the a/f meter from jaycar  cost about 70 $?? there is another kit from jaycar for about $20 or soo, which just has a row of leds...   btw has any body looked  at the latest jaycar catalog ? look   at  catalog numbers: bs-5080 kc-5382 kc-5380 kc-5385 kc-5387 kc-5386 kc-5384 kc-5375 they are a  heap o f  electronic kits for efi cars.... thing is , i actually ordered the book, but they said the book wont be ready till september  (even though its advertsied in this year s catalog. theres some really interesting kits,  boost controller etc... mark k   ----- Original Message ----- From: rclough To: [EMAIL PROTECTED] Sent: Thursday, August 05, 2004 8:43 PM Subject: Re: Cheap Air/Fuel ratio meter and sensor for L-series Good idea! I've had similar thought for the same reason(s).   Keep us informed how you go building and installing it, and how it works if you succeed.   I have read that the o2 sensor in the Hyundai Excell with the twin cam head is a high quality unit for sensing.  Could be a good deal from a wrecker.    Others may add their knowledge on this.     ----- Original Message ----- From: Rob P To: [EMAIL PROTECTED] Sent: Thursday, August 05, 2004 7:02 PM Subject: Cheap Air/Fuel ratio meter and sensor for L-series Hi all, I want to set up my L4 powered 1600 with a cheap O2 sensor and A/F ratio meter. Is there anything I need to know? I see heaps of cheap O2 sensors on Ebay, brand new starting at around AUS$30-$40. There is a Bosch #11051 (OE type before catalyst single wire) O2 sensor listed as suitable for an L-series 4-cylinder. Are these any good? I'm just running twin SU's on one car with an L18 and twin Weber 45's on another with a L20B and want to swap between them for tuning. I thought I'd just get a Jaycar LED A/F meter kit and DIY it. I should be able to put the whole thing together for less than $150 I reckon. Any thoughts?   Cheers, Rob P  --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ --------------------------------------------------------------------- --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ --------------------------------------------------------------------- --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ --------------------------------------------------------------------- --membersozdat------------------------------------------------------- OZDAT Mailing List Please Note:- Send (un)subscribe requests to [EMAIL PROTECTED] Send submissions to [EMAIL PROTECTED] No unauthorised redistribution of this email http://www.ozdat.com/ozdatonline/index.htm http://www.ozdat.com/ozdatonline/listindex.html http://www.mail-archive.com/[EMAIL PROTECTED]/ ---------------------------------------------------------------------