S
S
Hi All!
I'm hoping someone here can provide some help with this.
I have an old GL wagon of indeterminate vintage, but the _current_
EA81 engine/carb/emissions system is from an '83. Alas, the beast has
the Carter-Weber carb, and I have been woefully unable to get it to
pass emissions this time around (high CO at 2500 RPM). There appears
to be an intermittent issue in the mixture control; duty
solenoid/ECU/O2 sensor/???, sometimes it will work fine, more often
not. If nothing else, the last go-round I seem to have killed the ECU
(popped a fuse, now the mixture LED never lights), and haven't had any
luck finding a replacement; it's _special_
What I would like to do is use the Hitachi carb/ECU from an '84 GL.
The '84 system doesn't use an O2 sensor, but rather has a separate
module that connects to the carb via several vacuum hoses which
presumably adjusts the mixture in response to ambient air pressure and
temperature.
Does anyone have any nfo on this newer system that might help in
sorting out the vacuum hoses and ECU wiring changes needed to do the
conversion? Any assistance greatly appreciated. TIA.
ByeBye! S.
Steve Jernigan KG0MB
Laboratory Manager
Microelectronics Research
University of Colorado
(719) 262-3101
I'm hoping someone here can provide some help with this.
I have an old GL wagon of indeterminate vintage, but the _current_
EA81 engine/carb/emissions system is from an '83. Alas, the beast has
the Carter-Weber carb, and I have been woefully unable to get it to
pass emissions this time around (high CO at 2500 RPM). There appears
to be an intermittent issue in the mixture control; duty
solenoid/ECU/O2 sensor/???, sometimes it will work fine, more often
not. If nothing else, the last go-round I seem to have killed the ECU
(popped a fuse, now the mixture LED never lights), and haven't had any
luck finding a replacement; it's _special_
What I would like to do is use the Hitachi carb/ECU from an '84 GL.
The '84 system doesn't use an O2 sensor, but rather has a separate
module that connects to the carb via several vacuum hoses which
presumably adjusts the mixture in response to ambient air pressure and
temperature.
Does anyone have any nfo on this newer system that might help in
sorting out the vacuum hoses and ECU wiring changes needed to do the
conversion? Any assistance greatly appreciated. TIA.
ByeBye! S.
Steve Jernigan KG0MB
Laboratory Manager
Microelectronics Research
University of Colorado
(719) 262-3101