im having problems with a obd2-0bd1 ecu conversion in my GS b18b.
my problem was... everything would work perfect, and with the based on other settings minor tune the ecu came with my car ran so smooth and great. BUT my rpm gauge would rev to 2500 then stick and vibrate a little, engine would keep going and revving smoothly. but at what im guessing 4000-45 the rpm gauge would just die and drop to 0.
i could drive fine but have no rpm gauge till i turned off and restarted my car.

we are currently trying to resolve the issue and the ecu-guy says the following
"The problem exists in the conversion harnesses on some 2000 integras.
A resistor needs to be added to resolve tach issues."

Sounds logical and we are going to give it a try.

im just curious as to what a wideband 02 sensor is in a integra, cause everything works fine in a test car with one.

school me!

 

Wideband zirconia sensor
A variation on the zirconia sensor, called the 'wideband' sensor, was introduced by Robert Bosch in 1994 but is (as of 2006) used in only a few vehicles. It is based on a planar zirconia element, but also incorporates an electrochemical gas pump. An electronic circuit containing a feedback loop controls the gas pump current to keep the output of the electrochemical cell constant, so that the pump current directly indicates the oxygen content of the exhaust gas. This sensor eliminates the averaging delay inherent in narrow band sensors, allowing the control unit to adjust the fuel delivery and ignition timing of the engine much more rapidly. In the automotive industry this sensor is also called a UEGO (for Universal Exhaust Gas Oxygen) sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1DA2NV &raquo;</TD></TR><TR><TD CLASS="quote"> Wideband zirconia sensor
A variation on the zirconia sensor, called the 'wideband' sensor, was introduced by Robert Bosch in 1994 but is (as of 2006) used in only a few vehicles. It is based on a planar zirconia element, but also incorporates an electrochemical gas pump. An electronic circuit containing a feedback loop controls the gas pump current to keep the output of the electrochemical cell constant, so that the pump current directly indicates the oxygen content of the exhaust gas. This sensor eliminates the averaging delay inherent in narrow band sensors, allowing the control unit to adjust the fuel delivery and ignition timing of the engine much more rapidly. In the automotive industry this sensor is also called a UEGO (for Universal Exhaust Gas Oxygen) sensor.

</TD></TR></TABLE>

Name your source next time you copy right...it's a felony

A wideband is able to read a "wider" range then a narrow band sensor (stock). it reads in AF's and can spit them out as a linear 0-5volt signal. A narrow band reads 14.7 AF ratio and either put sout 0 if it's below that or 1 if it's above that. .5 volts if it's right on. The stock ECU cannot use a wideband as it's waiting for a 0-1volt singla when the wideband will give aroun 2 or 3 for 14.7 AFR...the computer goes nuts and starts dumping a lot of fuel.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by adseguy &raquo;</TD></TR><TR><TD CLASS="quote">Name your source next time you copy right...it's a felony

A wideband is able to read a "wider" range then a narrow band sensor (stock). it reads in AF's and can spit them out as a linear 0-5volt signal. A narrow band reads 14.7 AF ratio and either put sout 0 if it's below that or 1 if it's above that. .5 volts if it's right on. The stock ECU cannot use a wideband as it's waiting for a 0-1volt singla when the wideband will give aroun 2 or 3 for 14.7 AFR...the computer goes nuts and starts dumping a lot of fuel.</TD></TR></TABLE>

some widebands have narrowband outputs allowing them to be used with the stock ecu. just so you know.

 

good stuff! thanks for the info.
i have a better idea of whats going on now.