Here's a service news from the late 90's regarding troubleshooting a fluctuating idle on '90-'93 Accords
http://www.in.honda.com/Rjanisis/pubs/SN/A990200.PDF
_______________
Also found this one, http://www.in.honda.com/Rjanisis/pubs/SN/A981100.PDF regarding EGR port cleaning which mentioned a service bulletin # 98-074. Did a google on 98-074 and found this..
http://honda.justanswer.com/uploads/...accord_egr.pdf
I know the EGR cleaning has been detailed here already, but this is the actual Honda service bulletin.
_____________________
Main relay information (at the very bottom of the last page)
http://www.in.honda.com/Rjanisis/pubs/SN/A000900.PDF
The nice part is, you can see all the service news as far back as January 1990. Used to be able to go way back - I remember looking at some from 1985, but not anymore. Bored, I read them all from 1990 to 2000.
All you have to do to see the different months and years is change the four digits after the 'A' to the month and year you want to view. So to see January 1990, make it A900100, to see March 1996, make it A960300 etc. etc.
While not all the service news are specific to 4th gens, the earlier ones have lots of helpful info regarding our cars.
I'm going to start listing all service news that have any info on our cars, starting from Jan 1990
__________________
All about problems on the 1990 Accord - Jan. 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900100.PDF
___________________
Tech tips and service manual corrections - Feb. 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900200.PDF
___________________
Fuel filter knocking and stuck speedometer needle - Mar. 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900300.PDF
___________________
A/C runs when switch is off - April 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900400.PDF
___________________
Windshield base leak, parasitic power draw, 3-4 flare in auto tranny - May 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900500.PDF
___________________
90 Accord windshield, rear window leaks - June 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900600.PDF
___________________
Glass adjustment, door locks and sunroof leaks - July 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900700.PDF
___________________
1990 dash rattle, poor A/C performance - August 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900800.PDF
___________________
Assorted tech tips - September 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900900.PDF
___________________
Service manual corrections, timing belt bolt info - October 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A901000.PDF
___________________
Accord transmission trouble shooting flow chart - November 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A901100.PDF
__________________
Accord wagon cable reel (SRS) information - December 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A901200.PDF
...to be continued.
Accord security system programming - February 1991
http://www.in.honda.com/Rjanisis/pubs/SN/A910200.PDF
__________________
Accord SE notes, ECU code 41 - March 1991
http://www.in.honda.com/Rjanisis/pubs/SN/A910300.PDF
__________________
Tracking oil and water leaks on the Accord - August 1991
http://www.in.honda.com/Rjanisis/pubs/SN/A910800.PDF
__________________
Door lock quirks 90-92 Accord - Sept. 1991
http://www.in.honda.com/Rjanisis/pubs/SN/A910900.PDF
__________________
Accord B pillar creak - Dec. 1991
http://www.in.honda.com/Rjanisis/pubs/SN/A911200.PDF
...to be continued
Auto tranny troubleshooting tips - April 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A920400.PDF
__________________
Manual tranny stuck in two gears, non adjustable cable on auto tranny - May 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A920500.PDF
__________________
Adjustable rear view mirror tension - July 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A920700.PDF
__________________
Tranny shudder, wagon tailgate light stays on - August 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A920800.PDF
__________________
How to flush out old ATF - Oct. 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A921000.PDF
__________________
Squeeky clutch pedal - November 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A921100.PDF
__________________
Compressor troubleshooting - don't fry your ECU - Dec. 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A921200.PDF
...to be continued
http://www.in.honda.com/Rjanisis/pubs/SN/A990200.PDF
_______________
Also found this one, http://www.in.honda.com/Rjanisis/pubs/SN/A981100.PDF regarding EGR port cleaning which mentioned a service bulletin # 98-074. Did a google on 98-074 and found this..
http://honda.justanswer.com/uploads/...accord_egr.pdf
I know the EGR cleaning has been detailed here already, but this is the actual Honda service bulletin.
_____________________
Main relay information (at the very bottom of the last page)
http://www.in.honda.com/Rjanisis/pubs/SN/A000900.PDF
The nice part is, you can see all the service news as far back as January 1990. Used to be able to go way back - I remember looking at some from 1985, but not anymore. Bored, I read them all from 1990 to 2000.
All you have to do to see the different months and years is change the four digits after the 'A' to the month and year you want to view. So to see January 1990, make it A900100, to see March 1996, make it A960300 etc. etc.
While not all the service news are specific to 4th gens, the earlier ones have lots of helpful info regarding our cars.
I'm going to start listing all service news that have any info on our cars, starting from Jan 1990
__________________
All about problems on the 1990 Accord - Jan. 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900100.PDF
___________________
Tech tips and service manual corrections - Feb. 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900200.PDF
___________________
Fuel filter knocking and stuck speedometer needle - Mar. 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900300.PDF
___________________
A/C runs when switch is off - April 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900400.PDF
___________________
Windshield base leak, parasitic power draw, 3-4 flare in auto tranny - May 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900500.PDF
___________________
90 Accord windshield, rear window leaks - June 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900600.PDF
___________________
Glass adjustment, door locks and sunroof leaks - July 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900700.PDF
___________________
1990 dash rattle, poor A/C performance - August 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900800.PDF
___________________
Assorted tech tips - September 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A900900.PDF
___________________
Service manual corrections, timing belt bolt info - October 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A901000.PDF
___________________
Accord transmission trouble shooting flow chart - November 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A901100.PDF
__________________
Accord wagon cable reel (SRS) information - December 1990
http://www.in.honda.com/Rjanisis/pubs/SN/A901200.PDF
...to be continued.
Accord security system programming - February 1991
http://www.in.honda.com/Rjanisis/pubs/SN/A910200.PDF
__________________
Accord SE notes, ECU code 41 - March 1991
http://www.in.honda.com/Rjanisis/pubs/SN/A910300.PDF
__________________
Tracking oil and water leaks on the Accord - August 1991
http://www.in.honda.com/Rjanisis/pubs/SN/A910800.PDF
__________________
Door lock quirks 90-92 Accord - Sept. 1991
http://www.in.honda.com/Rjanisis/pubs/SN/A910900.PDF
__________________
Accord B pillar creak - Dec. 1991
http://www.in.honda.com/Rjanisis/pubs/SN/A911200.PDF
...to be continued
Auto tranny troubleshooting tips - April 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A920400.PDF
__________________
Manual tranny stuck in two gears, non adjustable cable on auto tranny - May 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A920500.PDF
__________________
Adjustable rear view mirror tension - July 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A920700.PDF
__________________
Tranny shudder, wagon tailgate light stays on - August 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A920800.PDF
__________________
How to flush out old ATF - Oct. 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A921000.PDF
__________________
Squeeky clutch pedal - November 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A921100.PDF
__________________
Compressor troubleshooting - don't fry your ECU - Dec. 1992
http://www.in.honda.com/Rjanisis/pubs/SN/A921200.PDF
...to be continued
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